@@ -66,7 +66,7 @@ explain extended select case a when 1 then 2 when 2 then 3 else 0 end as fcase,
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort
Warnings:
Note 1003 select (case test.t1.a when 1 then 2 when 2 then 3 else 0 end) AS `fcase`,count(0) AS `count(*)` from test.t1 group by (case test.t1.a when 1 then 2 when 2 then 3 else 0 end)
Note 1003 select (case `test`.`t1`.`a` when 1 then 2 when 2 then 3 else 0 end) AS `fcase`,count(0) AS `count(*)` from `test`.`t1` group by (case `test`.`t1`.`a` when 1 then 2 when 2 then 3 else 0 end)
select case a when 1 then "one" when 2 then "two" else "nothing" end as fcase, count(*) from t1 group by fcase;
@@ -17,7 +17,7 @@ explain extended select * from t1 where MATCH(a,b) AGAINST ("collections");
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 fulltext a a 0 1 Using where
Warnings:
Note 1003 select test.t1.a AS `a`,test.t1.b AS `b` from test.t1 where (match test.t1.a,test.t1.b against (_latin1'collections'))
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (match `test`.`t1`.`a`,`test`.`t1`.`b` against (_latin1'collections'))
select * from t1 where MATCH(a,b) AGAINST ("indexes");
a b
Full-text indexes are called collections
...
...
@@ -78,7 +78,7 @@ explain extended select * from t1 where MATCH(a,b) AGAINST("support -collections
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 fulltext a a 0 1 Using where
Warnings:
Note 1003 select test.t1.a AS `a`,test.t1.b AS `b` from test.t1 where (match test.t1.a,test.t1.b against (_latin1'support -collections' in boolean mode))
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (match `test`.`t1`.`a`,`test`.`t1`.`b` against (_latin1'support -collections' in boolean mode))
select * from t1 where MATCH(a,b) AGAINST("support collections" IN BOOLEAN MODE);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1
Warnings:
Note 1003 select default(test.t1.str) AS `default(str)`,default(test.t1.strnull) AS `default(strnull)`,default(test.t1.intg) AS `default(intg)`,default(test.t1.rel) AS `default(rel)` from test.t1
Note 1003 select default(`test`.`t1`.`str`) AS `default(str)`,default(`test`.`t1`.`strnull`) AS `default(strnull)`,default(`test`.`t1`.`intg`) AS `default(intg)`,default(`test`.`t1`.`rel`) AS `default(rel)` from `test`.`t1`
@@ -18,7 +18,7 @@ explain extended select grp,group_concat(c) from t1 group by grp;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 9 Using filesort
Warnings:
Note 1003 select test.t1.grp AS `grp`,group_concat(test.t1.c seperator ',') AS `group_concat(c)` from test.t1 group by test.t1.grp
Note 1003 select `test`.`t1`.`grp` AS `grp`,group_concat(`test`.`t1`.`c` seperator ',') AS `group_concat(c)` from `test`.`t1` group by `test`.`t1`.`grp`
select grp,group_concat(a,c) from t1 group by grp;
grp group_concat(a,c)
1 1a
...
...
@@ -93,7 +93,7 @@ explain extended select grp,group_concat(distinct c order by c desc) from t1 gro
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 9 Using filesort
Warnings:
Note 1003 select test.t1.grp AS `grp`,group_concat(distinct test.t1.c order by test.t1.c seperator ',') AS `group_concat(distinct c order by c desc)` from test.t1 group by test.t1.grp
Note 1003 select `test`.`t1`.`grp` AS `grp`,group_concat(distinct `test`.`t1`.`c` order by `test`.`t1`.`c` seperator ',') AS `group_concat(distinct c order by c desc)` from `test`.`t1` group by `test`.`t1`.`grp`
select grp,group_concat(c order by c separator ",") from t1 group by grp;
grp group_concat(c order by c separator ",")
1 a
...
...
@@ -113,7 +113,7 @@ explain extended select grp,group_concat(distinct c order by c separator ",") fr
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 9 Using filesort
Warnings:
Note 1003 select test.t1.grp AS `grp`,group_concat(distinct test.t1.c order by test.t1.c seperator ',') AS `group_concat(distinct c order by c separator ",")` from test.t1 group by test.t1.grp
Note 1003 select `test`.`t1`.`grp` AS `grp`,group_concat(distinct `test`.`t1`.`c` order by `test`.`t1`.`c` seperator ',') AS `group_concat(distinct c order by c separator ",")` from `test`.`t1` group by `test`.`t1`.`grp`
select grp,group_concat(distinct c order by c desc separator ",") from t1 group by grp;
grp group_concat(distinct c order by c desc separator ",")
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 Using filesort
Warnings:
Note 1003 select sql_big_result test.t1.a AS `a`,count(test.t1.b) AS `count(b)`,sum(test.t1.b) AS `sum(b)`,avg(test.t1.b) AS `avg(b)`,std(test.t1.b) AS `std(b)`,min(test.t1.b) AS `min(b)`,max(test.t1.b) AS `max(b)`,bit_and(test.t1.b) AS `bit_and(b)`,bit_or(test.t1.b) AS `bit_or(b)`,bit_xor(test.t1.b) AS `bit_xor(b)` from test.t1 group by test.t1.a
Note 1003 select sql_big_result `test`.`t1`.`a` AS `a`,count(`test`.`t1`.`b`) AS `count(b)`,sum(`test`.`t1`.`b`) AS `sum(b)`,avg(`test`.`t1`.`b`) AS `avg(b)`,std(`test`.`t1`.`b`) AS `std(b)`,min(`test`.`t1`.`b`) AS `min(b)`,max(`test`.`t1`.`b`) AS `max(b)`,bit_and(`test`.`t1`.`b`) AS `bit_and(b)`,bit_or(`test`.`t1`.`b`) AS `bit_or(b)`,bit_xor(`test`.`t1`.`b`) AS `bit_xor(b)` from `test`.`t1` group by `test`.`t1`.`a`
@@ -43,7 +43,7 @@ explain extended select if(u=1,st,binary st) s from t1 where st like "%a%" order
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 7 Using where; Using filesort
Warnings:
Note 1003 select if((test.t1.u = 1),test.t1.st,(test.t1.st collate _latin1'BINARY')) AS `s` from test.t1 where (test.t1.st like _latin1'%a%') order by if((test.t1.u = 1),test.t1.st,(test.t1.st collate _latin1'BINARY'))
Note 1003 select if((`test`.`t1`.`u` = 1),`test`.`t1`.`st`,(`test`.`t1`.`st` collate _latin1'BINARY')) AS `s` from `test`.`t1` where (`test`.`t1`.`st` like _latin1'%a%') order by if((`test`.`t1`.`u` = 1),`test`.`t1`.`st`,(`test`.`t1`.`st` collate _latin1'BINARY'))
@@ -146,7 +146,7 @@ explain extended select * from t1 where 'a' in (a,b,c collate latin1_bin);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where
Warnings:
Note 1003 select test.t1.a AS `a`,test.t1.b AS `b`,test.t1.c AS `c` from test.t1 where (_latin1'a' in (test.t1.a,test.t1.b,(test.t1.c collate _latin1'latin1_bin')))
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1` where (_latin1'a' in (`test`.`t1`.`a`,`test`.`t1`.`b`,(`test`.`t1`.`c` collate _latin1'latin1_bin')))
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE gis_geometry ALL NULL NULL NULL NULL 21
Warnings:
Note 1003 select dimension(test.gis_geometry.g) AS `Dimension(g)`,geometrytype(test.gis_geometry.g) AS `GeometryType(g)`,isempty(test.gis_geometry.g) AS `IsEmpty(g)`,astext(envelope(test.gis_geometry.g)) AS `AsText(Envelope(g))` from test.gis_geometry
Note 1003 select dimension(`test`.`gis_geometry`.`g`) AS `Dimension(g)`,geometrytype(`test`.`gis_geometry`.`g`) AS `GeometryType(g)`,isempty(`test`.`gis_geometry`.`g`) AS `IsEmpty(g)`,astext(envelope(`test`.`gis_geometry`.`g`)) AS `AsText(Envelope(g))` from `test`.`gis_geometry`
SELECT fid, X(g) FROM gis_point;
fid X(g)
101 10
...
...
@@ -245,7 +245,7 @@ explain extended select X(g),Y(g) FROM gis_point;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE gis_point ALL NULL NULL NULL NULL 4
Warnings:
Note 1003 select x(test.gis_point.g) AS `X(g)`,y(test.gis_point.g) AS `Y(g)` from test.gis_point
Note 1003 select x(`test`.`gis_point`.`g`) AS `X(g)`,y(`test`.`gis_point`.`g`) AS `Y(g)` from `test`.`gis_point`
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE gis_line ALL NULL NULL NULL NULL 3
Warnings:
Note 1003 select astext(startpoint(test.gis_line.g)) AS `AsText(StartPoint(g))`,astext(endpoint(test.gis_line.g)) AS `AsText(EndPoint(g))`,glength(test.gis_line.g) AS `GLength(g)`,numpoints(test.gis_line.g) AS `NumPoints(g)`,astext(pointn(test.gis_line.g,2)) AS `AsText(PointN(g, 2))`,isclosed(test.gis_line.g) AS `IsClosed(g)` from test.gis_line
Note 1003 select astext(startpoint(`test`.`gis_line`.`g`)) AS `AsText(StartPoint(g))`,astext(endpoint(`test`.`gis_line`.`g`)) AS `AsText(EndPoint(g))`,glength(`test`.`gis_line`.`g`) AS `GLength(g)`,numpoints(`test`.`gis_line`.`g`) AS `NumPoints(g)`,astext(pointn(`test`.`gis_line`.`g`,2)) AS `AsText(PointN(g, 2))`,isclosed(`test`.`gis_line`.`g`) AS `IsClosed(g)` from `test`.`gis_line`
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE gis_polygon ALL NULL NULL NULL NULL 3
Warnings:
Note 1003 select astext(centroid(test.gis_polygon.g)) AS `AsText(Centroid(g))`,area(test.gis_polygon.g) AS `Area(g)`,astext(exteriorring(test.gis_polygon.g)) AS `AsText(ExteriorRing(g))`,numinteriorrings(test.gis_polygon.g) AS `NumInteriorRings(g)`,astext(interiorringn(test.gis_polygon.g,1)) AS `AsText(InteriorRingN(g, 1))` from test.gis_polygon
Note 1003 select astext(centroid(`test`.`gis_polygon`.`g`)) AS `AsText(Centroid(g))`,area(`test`.`gis_polygon`.`g`) AS `Area(g)`,astext(exteriorring(`test`.`gis_polygon`.`g`)) AS `AsText(ExteriorRing(g))`,numinteriorrings(`test`.`gis_polygon`.`g`) AS `NumInteriorRings(g)`,astext(interiorringn(`test`.`gis_polygon`.`g`,1)) AS `AsText(InteriorRingN(g, 1))` from `test`.`gis_polygon`
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE gis_multi_point ALL NULL NULL NULL NULL 3
Warnings:
Note 1003 select test.gis_multi_point.fid AS `fid`,numgeometries(test.gis_multi_point.g) AS `NumGeometries(g)` from test.gis_multi_point
Note 1003 select `test`.`gis_multi_point`.`fid` AS `fid`,numgeometries(`test`.`gis_multi_point`.`g`) AS `NumGeometries(g)` from `test`.`gis_multi_point`
SELECT fid, AsText(GeometryN(g, 2)) from gis_multi_point;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE gis_multi_point ALL NULL NULL NULL NULL 3
Warnings:
Note 1003 select test.gis_multi_point.fid AS `fid`,astext(geometryn(test.gis_multi_point.g,2)) AS `AsText(GeometryN(g, 2))` from test.gis_multi_point
Note 1003 select `test`.`gis_multi_point`.`fid` AS `fid`,astext(geometryn(`test`.`gis_multi_point`.`g`,2)) AS `AsText(GeometryN(g, 2))` from `test`.`gis_multi_point`
SELECT g1.fid as first, g2.fid as second,
Within(g1.g, g2.g) as w, Contains(g1.g, g2.g) as c, Overlaps(g1.g, g2.g) as o,
Equals(g1.g, g2.g) as e, Disjoint(g1.g, g2.g) as d, Touches(g1.g, g2.g) as t,
...
...
@@ -397,7 +397,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE g1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort
1 SIMPLE g2 ALL NULL NULL NULL NULL 2
Warnings:
Note 1003 select test.g1.fid AS `first`,test.g2.fid AS `second`,within(test.g1.g,test.g2.g) AS `w`,contains(test.g1.g,test.g2.g) AS `c`,overlaps(test.g1.g,test.g2.g) AS `o`,equals(test.g1.g,test.g2.g) AS `e`,disjoint(test.g1.g,test.g2.g) AS `d`,touches(test.g1.g,test.g2.g) AS `t`,intersects(test.g1.g,test.g2.g) AS `i`,crosses(test.g1.g,test.g2.g) AS `r` from test.gis_geometrycollection g1 join test.gis_geometrycollection g2 order by test.g1.fid,test.g2.fid
Note 1003 select `test`.`g1`.`fid` AS `first`,`test`.`g2`.`fid` AS `second`,within(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `w`,contains(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `c`,overlaps(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `o`,equals(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `e`,disjoint(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `d`,touches(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `t`,intersects(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `i`,crosses(`test`.`g1`.`g`,`test`.`g2`.`g`) AS `r` from `test`.`gis_geometrycollection` `g1` join `test`.`gis_geometrycollection` `g2` order by `test`.`g1`.`fid`,`test`.`g2`.`fid`
DROP TABLE gis_point, gis_line, gis_polygon, gis_multi_point, gis_multi_line, gis_multi_polygon, gis_geometrycollection, gis_geometry;
@@ -288,7 +288,7 @@ explain extended select sql_big_result spid,sum(userid) from t1 group by spid de
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using filesort
Warnings:
Note 1003 select sql_big_result test.t1.spID AS `spid`,sum(test.t1.userID) AS `sum(userid)` from test.t1 group by test.t1.spID desc
Note 1003 select sql_big_result `test`.`t1`.`spID` AS `spid`,sum(`test`.`t1`.`userID`) AS `sum(userid)` from `test`.`t1` group by `test`.`t1`.`spID` desc
explain select sql_big_result spid,sum(userid) from t1 group by spid desc order by null;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using filesort
@@ -76,7 +76,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t4 ALL NULL NULL NULL NULL 2
Warnings:
Note 1003 select test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b` from test.t2 left join (test.t3 join test.t4) on((test.t2.b = test.t4.b)) where ((test.t3.a = 1) or isnull(test.t3.c))
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t2` left join (`test`.`t3` join `test`.`t4`) on((`test`.`t2`.`b` = `test`.`t4`.`b`)) where ((`test`.`t3`.`a` = 1) or isnull(`test`.`t3`.`c`))
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
FROM t2
LEFT JOIN
...
...
@@ -153,7 +153,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 ALL NULL NULL NULL NULL 2
1 SIMPLE t5 ALL NULL NULL NULL NULL 3
Warnings:
Note 1003 select test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b` from test.t2 left join (test.t3 join test.t4 join test.t5) on((test.t2.b = test.t4.b)) where ((test.t3.a > 1) or isnull(test.t3.c))
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b` from `test`.`t2` left join (`test`.`t3` join `test`.`t4` join `test`.`t5`) on((`test`.`t2`.`b` = `test`.`t4`.`b`)) where ((`test`.`t3`.`a` > 1) or isnull(`test`.`t3`.`c`))
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
FROM t2
LEFT JOIN
...
...
@@ -183,7 +183,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t4 ALL NULL NULL NULL NULL 2
1 SIMPLE t5 ALL NULL NULL NULL NULL 3 Using where
Warnings:
Note 1003 select test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b` from test.t2 left join (test.t3 join test.t4 join test.t5) on((test.t2.b = test.t4.b)) where (((test.t3.a > 1) or isnull(test.t3.c)) and ((test.t5.a < 3) or isnull(test.t5.c)))
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b` from `test`.`t2` left join (`test`.`t3` join `test`.`t4` join `test`.`t5`) on((`test`.`t2`.`b` = `test`.`t4`.`b`)) where (((`test`.`t3`.`a` > 1) or isnull(`test`.`t3`.`c`)) and ((`test`.`t5`.`a` < 3) or isnull(`test`.`t5`.`c`)))
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b,t5.a,t5.b
FROM t2
LEFT JOIN
...
...
@@ -233,7 +233,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t6 ALL NULL NULL NULL NULL 3
1 SIMPLE t8 ALL NULL NULL NULL NULL 2
Warnings:
Note 1003 select test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b` from test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10))) where 1
Note 1003 select `test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b` from `test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t7`.`b` = `test`.`t8`.`b`) and (`test`.`t6`.`b` < 10))) where 1
SELECT t6.a,t6.b,t7.a,t7.b,t8.a,t8.b
FROM t6,
t7
...
...
@@ -562,7 +562,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t6 ALL NULL NULL NULL NULL 3
1 SIMPLE t8 ALL NULL NULL NULL NULL 2
Warnings:
Note 1003 select test.t0.a AS `a`,test.t0.b AS `b`,test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b`,test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b` from test.t0 join test.t1 left join (test.t2 left join (test.t3 join test.t4) on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) join test.t5 left join (test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10)))) on(((test.t6.b >= 2) and (test.t5.b = test.t7.b)))) on((((test.t3.b = 2) or isnull(test.t3.c)) and ((test.t6.b = 2) or isnull(test.t6.c)) and ((test.t1.b = test.t5.b) or isnull(test.t3.c) or isnull(test.t6.c) or isnull(test.t8.c)) and (test.t1.a <> 2))) where ((test.t0.a = 1) and (test.t0.b = test.t1.b) and ((test.t2.a >= 4) or isnull(test.t2.c)))
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t2`.`b` = `test`.`t4`.`b`))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t7`.`b` = `test`.`t8`.`b`) and (`test`.`t6`.`b` < 10)))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t5`.`b` = `test`.`t7`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t1`.`b` = `test`.`t5`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) where ((`test`.`t0`.`a` = 1) and (`test`.`t0`.`b` = `test`.`t1`.`b`) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)))
@@ -660,7 +660,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t8 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 Using where
Warnings:
Note 1003 select test.t0.a AS `a`,test.t0.b AS `b`,test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b`,test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b`,test.t9.a AS `a`,test.t9.b AS `b` from test.t0 join test.t1 left join (test.t2 left join (test.t3 join test.t4) on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) join test.t5 left join (test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10)))) on(((test.t6.b >= 2) and (test.t5.b = test.t7.b)))) on((((test.t3.b = 2) or isnull(test.t3.c)) and ((test.t6.b = 2) or isnull(test.t6.c)) and ((test.t1.b = test.t5.b) or isnull(test.t3.c) or isnull(test.t6.c) or isnull(test.t8.c)) and (test.t1.a <> 2))) join test.t9 where ((test.t0.a = 1) and (test.t0.b = test.t1.b) and ((test.t2.a >= 4) or isnull(test.t2.c)) and ((test.t3.a < 5) or isnull(test.t3.c)) and ((test.t3.b = test.t4.b) or isnull(test.t3.c) or isnull(test.t4.c)) and ((test.t5.a >= 2) or isnull(test.t5.c)) and ((test.t6.a >= 4) or isnull(test.t6.c)) and ((test.t7.a <= 2) or isnull(test.t7.c)) and ((test.t8.a < 1) or isnull(test.t8.c)) and ((test.t8.b = test.t9.b) or isnull(test.t8.c)) and (test.t9.a = 1))
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t2`.`b` = `test`.`t4`.`b`))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t7`.`b` = `test`.`t8`.`b`) and (`test`.`t6`.`b` < 10)))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t5`.`b` = `test`.`t7`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t1`.`b` = `test`.`t5`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t0`.`a` = 1) and (`test`.`t0`.`b` = `test`.`t1`.`b`) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t3`.`b` = `test`.`t4`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t8`.`b` = `test`.`t9`.`b`) or isnull(`test`.`t8`.`c`)) and (`test`.`t9`.`a` = 1))
SELECT t9.a,t9.b
FROM t9;
a b
...
...
@@ -858,7 +858,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 3
1 SIMPLE t4 ALL NULL NULL NULL NULL 2
Warnings:
Note 1003 select test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b` from test.t1 join test.t3 join test.t2 left join test.t4 on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) where (test.t1.a <= 2)
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t1` join `test`.`t3` join `test`.`t2` left join `test`.`t4` on(((`test`.`t3`.`a` = 1) and (`test`.`t2`.`b` = `test`.`t4`.`b`))) where (`test`.`t1`.`a` <= 2)
CREATE INDEX idx_b ON t2(b);
EXPLAIN EXTENDED
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
...
...
@@ -872,7 +872,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ref idx_b idx_b 5 test.t3.b 2
1 SIMPLE t1 ALL NULL NULL NULL NULL 3
Warnings:
Note 1003 select test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b` from test.t3 join test.t4 left join (test.t1 join test.t2) on(((test.t3.a = 1) and (test.t3.b = test.t2.b) and (test.t2.b = test.t4.b))) where 1
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t3` join `test`.`t4` left join (`test`.`t1` join `test`.`t2`) on(((`test`.`t3`.`a` = 1) and (`test`.`t3`.`b` = `test`.`t2`.`b`) and (`test`.`t2`.`b` = `test`.`t4`.`b`))) where 1
SELECT t2.a,t2.b,t3.a,t3.b,t4.a,t4.b
FROM t3,t4
LEFT JOIN
...
...
@@ -935,7 +935,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t8 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 Using where
Warnings:
Note 1003 select test.t0.a AS `a`,test.t0.b AS `b`,test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b`,test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b`,test.t9.a AS `a`,test.t9.b AS `b` from test.t0 join test.t1 left join (test.t2 left join (test.t3 join test.t4) on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) join test.t5 left join (test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10)))) on(((test.t6.b >= 2) and (test.t5.b = test.t7.b)))) on((((test.t3.b = 2) or isnull(test.t3.c)) and ((test.t6.b = 2) or isnull(test.t6.c)) and ((test.t1.b = test.t5.b) or isnull(test.t3.c) or isnull(test.t6.c) or isnull(test.t8.c)) and (test.t1.a <> 2))) join test.t9 where ((test.t0.a = 1) and (test.t0.b = test.t1.b) and ((test.t2.a >= 4) or isnull(test.t2.c)) and ((test.t3.a < 5) or isnull(test.t3.c)) and ((test.t3.b = test.t4.b) or isnull(test.t3.c) or isnull(test.t4.c)) and ((test.t5.a >= 2) or isnull(test.t5.c)) and ((test.t6.a >= 4) or isnull(test.t6.c)) and ((test.t7.a <= 2) or isnull(test.t7.c)) and ((test.t8.a < 1) or isnull(test.t8.c)) and ((test.t8.b = test.t9.b) or isnull(test.t8.c)) and (test.t9.a = 1))
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t2`.`b` = `test`.`t4`.`b`))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t7`.`b` = `test`.`t8`.`b`) and (`test`.`t6`.`b` < 10)))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t5`.`b` = `test`.`t7`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t1`.`b` = `test`.`t5`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t0`.`a` = 1) and (`test`.`t0`.`b` = `test`.`t1`.`b`) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t3`.`b` = `test`.`t4`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t8`.`b` = `test`.`t9`.`b`) or isnull(`test`.`t8`.`c`)) and (`test`.`t9`.`a` = 1))
CREATE INDEX idx_b ON t4(b);
CREATE INDEX idx_b ON t5(b);
EXPLAIN EXTENDED
...
...
@@ -986,7 +986,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t8 ALL NULL NULL NULL NULL 2 Using where
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 Using where
Warnings:
Note 1003 select test.t0.a AS `a`,test.t0.b AS `b`,test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b`,test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b`,test.t9.a AS `a`,test.t9.b AS `b` from test.t0 join test.t1 left join (test.t2 left join (test.t3 join test.t4) on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) join test.t5 left join (test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10)))) on(((test.t6.b >= 2) and (test.t5.b = test.t7.b)))) on((((test.t3.b = 2) or isnull(test.t3.c)) and ((test.t6.b = 2) or isnull(test.t6.c)) and ((test.t1.b = test.t5.b) or isnull(test.t3.c) or isnull(test.t6.c) or isnull(test.t8.c)) and (test.t1.a <> 2))) join test.t9 where ((test.t0.a = 1) and (test.t0.b = test.t1.b) and ((test.t2.a >= 4) or isnull(test.t2.c)) and ((test.t3.a < 5) or isnull(test.t3.c)) and ((test.t3.b = test.t4.b) or isnull(test.t3.c) or isnull(test.t4.c)) and ((test.t5.a >= 2) or isnull(test.t5.c)) and ((test.t6.a >= 4) or isnull(test.t6.c)) and ((test.t7.a <= 2) or isnull(test.t7.c)) and ((test.t8.a < 1) or isnull(test.t8.c)) and ((test.t8.b = test.t9.b) or isnull(test.t8.c)) and (test.t9.a = 1))
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t2`.`b` = `test`.`t4`.`b`))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t7`.`b` = `test`.`t8`.`b`) and (`test`.`t6`.`b` < 10)))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t5`.`b` = `test`.`t7`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t1`.`b` = `test`.`t5`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t0`.`a` = 1) and (`test`.`t0`.`b` = `test`.`t1`.`b`) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t3`.`b` = `test`.`t4`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t8`.`b` = `test`.`t9`.`b`) or isnull(`test`.`t8`.`c`)) and (`test`.`t9`.`a` = 1))
@@ -1036,7 +1036,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t8 ref idx_b idx_b 5 test.t7.b 2 Using where
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 Using where
Warnings:
Note 1003 select test.t0.a AS `a`,test.t0.b AS `b`,test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b`,test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b`,test.t9.a AS `a`,test.t9.b AS `b` from test.t0 join test.t1 left join (test.t2 left join (test.t3 join test.t4) on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) join test.t5 left join (test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10)))) on(((test.t6.b >= 2) and (test.t5.b = test.t7.b)))) on((((test.t3.b = 2) or isnull(test.t3.c)) and ((test.t6.b = 2) or isnull(test.t6.c)) and ((test.t1.b = test.t5.b) or isnull(test.t3.c) or isnull(test.t6.c) or isnull(test.t8.c)) and (test.t1.a <> 2))) join test.t9 where ((test.t0.a = 1) and (test.t0.b = test.t1.b) and ((test.t2.a >= 4) or isnull(test.t2.c)) and ((test.t3.a < 5) or isnull(test.t3.c)) and ((test.t3.b = test.t4.b) or isnull(test.t3.c) or isnull(test.t4.c)) and ((test.t5.a >= 2) or isnull(test.t5.c)) and ((test.t6.a >= 4) or isnull(test.t6.c)) and ((test.t7.a <= 2) or isnull(test.t7.c)) and ((test.t8.a < 1) or isnull(test.t8.c)) and ((test.t8.b = test.t9.b) or isnull(test.t8.c)) and (test.t9.a = 1))
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t2`.`b` = `test`.`t4`.`b`))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t7`.`b` = `test`.`t8`.`b`) and (`test`.`t6`.`b` < 10)))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t5`.`b` = `test`.`t7`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t1`.`b` = `test`.`t5`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t0`.`a` = 1) and (`test`.`t0`.`b` = `test`.`t1`.`b`) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t3`.`b` = `test`.`t4`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t8`.`b` = `test`.`t9`.`b`) or isnull(`test`.`t8`.`c`)) and (`test`.`t9`.`a` = 1))
CREATE INDEX idx_b ON t1(b);
CREATE INDEX idx_a ON t0(a);
EXPLAIN EXTENDED
...
...
@@ -1087,7 +1087,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t8 ref idx_b idx_b 5 test.t7.b 2 Using where
1 SIMPLE t9 ALL NULL NULL NULL NULL 3 Using where
Warnings:
Note 1003 select test.t0.a AS `a`,test.t0.b AS `b`,test.t1.a AS `a`,test.t1.b AS `b`,test.t2.a AS `a`,test.t2.b AS `b`,test.t3.a AS `a`,test.t3.b AS `b`,test.t4.a AS `a`,test.t4.b AS `b`,test.t5.a AS `a`,test.t5.b AS `b`,test.t6.a AS `a`,test.t6.b AS `b`,test.t7.a AS `a`,test.t7.b AS `b`,test.t8.a AS `a`,test.t8.b AS `b`,test.t9.a AS `a`,test.t9.b AS `b` from test.t0 join test.t1 left join (test.t2 left join (test.t3 join test.t4) on(((test.t3.a = 1) and (test.t2.b = test.t4.b))) join test.t5 left join (test.t6 join test.t7 left join test.t8 on(((test.t7.b = test.t8.b) and (test.t6.b < 10)))) on(((test.t6.b >= 2) and (test.t5.b = test.t7.b)))) on((((test.t3.b = 2) or isnull(test.t3.c)) and ((test.t6.b = 2) or isnull(test.t6.c)) and ((test.t1.b = test.t5.b) or isnull(test.t3.c) or isnull(test.t6.c) or isnull(test.t8.c)) and (test.t1.a <> 2))) join test.t9 where ((test.t0.a = 1) and (test.t0.b = test.t1.b) and ((test.t2.a >= 4) or isnull(test.t2.c)) and ((test.t3.a < 5) or isnull(test.t3.c)) and ((test.t3.b = test.t4.b) or isnull(test.t3.c) or isnull(test.t4.c)) and ((test.t5.a >= 2) or isnull(test.t5.c)) and ((test.t6.a >= 4) or isnull(test.t6.c)) and ((test.t7.a <= 2) or isnull(test.t7.c)) and ((test.t8.a < 1) or isnull(test.t8.c)) and ((test.t8.b = test.t9.b) or isnull(test.t8.c)) and (test.t9.a = 1))
Note 1003 select `test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b`,`test`.`t8`.`a` AS `a`,`test`.`t8`.`b` AS `b`,`test`.`t9`.`a` AS `a`,`test`.`t9`.`b` AS `b` from `test`.`t0` join `test`.`t1` left join (`test`.`t2` left join (`test`.`t3` join `test`.`t4`) on(((`test`.`t3`.`a` = 1) and (`test`.`t2`.`b` = `test`.`t4`.`b`))) join `test`.`t5` left join (`test`.`t6` join `test`.`t7` left join `test`.`t8` on(((`test`.`t7`.`b` = `test`.`t8`.`b`) and (`test`.`t6`.`b` < 10)))) on(((`test`.`t6`.`b` >= 2) and (`test`.`t5`.`b` = `test`.`t7`.`b`)))) on((((`test`.`t3`.`b` = 2) or isnull(`test`.`t3`.`c`)) and ((`test`.`t6`.`b` = 2) or isnull(`test`.`t6`.`c`)) and ((`test`.`t1`.`b` = `test`.`t5`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t6`.`c`) or isnull(`test`.`t8`.`c`)) and (`test`.`t1`.`a` <> 2))) join `test`.`t9` where ((`test`.`t0`.`a` = 1) and (`test`.`t0`.`b` = `test`.`t1`.`b`) and ((`test`.`t2`.`a` >= 4) or isnull(`test`.`t2`.`c`)) and ((`test`.`t3`.`a` < 5) or isnull(`test`.`t3`.`c`)) and ((`test`.`t3`.`b` = `test`.`t4`.`b`) or isnull(`test`.`t3`.`c`) or isnull(`test`.`t4`.`c`)) and ((`test`.`t5`.`a` >= 2) or isnull(`test`.`t5`.`c`)) and ((`test`.`t6`.`a` >= 4) or isnull(`test`.`t6`.`c`)) and ((`test`.`t7`.`a` <= 2) or isnull(`test`.`t7`.`c`)) and ((`test`.`t8`.`a` < 1) or isnull(`test`.`t8`.`c`)) and ((`test`.`t8`.`b` = `test`.`t9`.`b`) or isnull(`test`.`t8`.`c`)) and (`test`.`t9`.`a` = 1))
@@ -85,7 +85,7 @@ explain extended select product, country_id , year, sum(profit) from t1 group by
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 15 Using temporary; Using filesort
Warnings:
Note 1003 select test.t1.product AS `product`,test.t1.country_id AS `country_id`,test.t1.year AS `year`,sum(test.t1.profit) AS `sum(profit)` from test.t1 group by test.t1.product,test.t1.country_id,test.t1.year with rollup
Note 1003 select `test`.`t1`.`product` AS `product`,`test`.`t1`.`country_id` AS `country_id`,`test`.`t1`.`year` AS `year`,sum(`test`.`t1`.`profit`) AS `sum(profit)` from `test`.`t1` group by `test`.`t1`.`product`,`test`.`t1`.`country_id`,`test`.`t1`.`year` with rollup
select product, country_id , sum(profit) from t1 group by product desc, country_id with rollup;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where
Warnings:
Note 1003 select count(0) AS `count(*)`,min(test.t2.fld4) AS `min(fld4)`,max(test.t2.fld4) AS `max(fld4)`,sum(test.t2.fld1) AS `sum(fld1)`,avg(test.t2.fld1) AS `avg(fld1)`,std(test.t2.fld1) AS `std(fld1)`,variance(test.t2.fld1) AS `variance(fld1)` from test.t2 where ((test.t2.companynr = 34) and (test.t2.fld4 <> _latin1''))
Note 1003 select count(0) AS `count(*)`,min(`test`.`t2`.`fld4`) AS `min(fld4)`,max(`test`.`t2`.`fld4`) AS `max(fld4)`,sum(`test`.`t2`.`fld1`) AS `sum(fld1)`,avg(`test`.`t2`.`fld1`) AS `avg(fld1)`,std(`test`.`t2`.`fld1`) AS `std(fld1)`,variance(`test`.`t2`.`fld1`) AS `variance(fld1)` from `test`.`t2` where ((`test`.`t2`.`companynr` = 34) and (`test`.`t2`.`fld4` <> _latin1''))
select companynr,count(*),min(fld4),max(fld4),sum(fld1),avg(fld1),std(fld1),variance(fld1) from t2 group by companynr limit 3;
@@ -50,7 +50,7 @@ id select_type table type possible_keys key key_len ref rows Extra
Warnings:
Note 1276 Field or reference 'a' of SELECT #3 was resolved in SELECT #1
Note 1276 Field or reference 'b.a' of SELECT #3 was resolved in SELECT #1
Note 1003 select 1 AS `1` from (select 1 AS `a`) b having ((select b.a AS `a`) = 1)
Note 1003 select 1 AS `1` from (select 1 AS `a`) `b` having ((select `b`.`a` AS `a`) = 1)
SELECT 1 FROM (SELECT 1 as a) as b HAVING (SELECT a)=1;
1
1
...
...
@@ -186,7 +186,7 @@ id select_type table type possible_keys key key_len ref rows Extra
4 SUBQUERY t2 ALL NULL NULL NULL NULL 2
NULL UNION RESULT <union1,3> ALL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (select test.t2.a AS `a`,test.t2.b AS `b` from test.t2 where (test.t2.b = (select test.t3.a AS `a` from test.t3 order by test.t3.a desc limit 1))) union (select test.t4.a AS `a`,test.t4.b AS `b` from test.t4 where (test.t4.b = (select (max(test.t2.a) * 4) AS `max(t2.a)*4` from test.t2)) order by test.t4.a)
Note 1003 (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` = (select `test`.`t3`.`a` AS `a` from `test`.`t3` order by `test`.`t3`.`a` desc limit 1))) union (select `test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b` from `test`.`t4` where (`test`.`t4`.`b` = (select (max(`test`.`t2`.`a`) * 4) AS `max(t2.a)*4` from `test`.`t2`)) order by `test`.`t4`.`a`)
select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2;
(select a from t3 where a<t2.a*4 order by 1 desc limit 1) a
3 1
...
...
@@ -202,7 +202,7 @@ id select_type table type possible_keys key key_len ref rows Extra
3 DERIVED t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 Using where; Using filesort
Warnings:
Note 1003 select (select test.t3.a AS `a` from test.t3 where (test.t3.a < 8) order by test.t3.a desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,tt.a AS `a` from (select test.t2.a AS `a`,test.t2.b AS `b` from test.t2 where (test.t2.a > 1)) tt
Note 1003 select (select `test`.`t3`.`a` AS `a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by `test`.`t3`.`a` desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt`
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);
a
2
...
...
@@ -223,7 +223,7 @@ id select_type table type possible_keys key key_len ref rows Extra
3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 Using where
Warnings:
Note 1276 Field or reference 't4.a' of SELECT #3 was resolved in SELECT #1
Note 1003 select test.t4.b AS `b`,(select avg((test.t2.a + (select min(test.t3.a) AS `min(t3.a)` from test.t3 where (test.t3.a >= test.t4.a)))) AS `avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a))` from test.t2) AS `(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2)` from test.t4
Note 1003 select `test`.`t4`.`b` AS `b`,(select avg((`test`.`t2`.`a` + (select min(`test`.`t3`.`a`) AS `min(t3.a)` from `test`.`t3` where (`test`.`t3`.`a` >= `test`.`t4`.`a`)))) AS `avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a))` from `test`.`t2`) AS `(select avg(t2.a+(select min(t3.a) from t3 where t3.a >= t4.a)) from t2)` from `test`.`t4`
select * from t3 where exists (select * from t2 where t2.b=t3.a);
a
7
...
...
@@ -269,7 +269,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 3
Warnings:
Note 1003 select test.t3.a AS `a` from test.t3 where (test.t3.a >= (select min(test.t2.b) from test.t2))
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where (`test`.`t3`.`a` >= (select min(`test`.`t2`.`b`) from `test`.`t2`))
select * from t3 where a >= all (select b from t2);
a
7
...
...
@@ -313,7 +313,7 @@ NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL
Warnings:
Note 1276 Field or reference 't2.a' of SELECT #2 was resolved in SELECT #1
Note 1276 Field or reference 't2.a' of SELECT #3 was resolved in SELECT #1
Note 1003 select (select test.t1.a AS `a` from test.t1 where (test.t1.a = test.t2.a) union select test.t5.a AS `a` from test.t5 where (test.t5.a = test.t2.a)) AS `(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a)`,test.t2.a AS `a` from test.t2
Note 1003 select (select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` = `test`.`t2`.`a`) union select `test`.`t5`.`a` AS `a` from `test`.`t5` where (`test`.`t5`.`a` = `test`.`t2`.`a`)) AS `(select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a)`,`test`.`t2`.`a` AS `a` from `test`.`t2`
select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2;
ERROR 21000: Subquery returns more than 1 row
create table t6 (patient_uq int, clinic_uq int, index i1 (clinic_uq));
...
...
@@ -331,7 +331,7 @@ id select_type table type possible_keys key key_len ref rows Extra
2 DEPENDENT SUBQUERY t7 eq_ref PRIMARY PRIMARY 4 test.t6.clinic_uq 1 Using index
Warnings:
Note 1276 Field or reference 'clinic_uq' of SELECT #2 was resolved in SELECT #1
Note 1003 select test.t6.patient_uq AS `patient_uq`,test.t6.clinic_uq AS `clinic_uq` from test.t6 where exists(select 1 AS `Not_used` from test.t7 where (test.t7.uq = test.t6.clinic_uq))
Note 1003 select `test`.`t6`.`patient_uq` AS `patient_uq`,`test`.`t6`.`clinic_uq` AS `clinic_uq` from `test`.`t6` where exists(select 1 AS `Not_used` from `test`.`t7` where (`test`.`t7`.`uq` = `test`.`t6`.`clinic_uq`))
select * from t1 where a= (select a from t2,t4 where t2.b=t4.b);
ERROR 23000: Column 'a' in field list is ambiguous
drop table t1,t2,t3;
...
...
@@ -366,7 +366,7 @@ id select_type table type possible_keys key key_len ref rows Extra
2 SUBQUERY t8 const PRIMARY PRIMARY 35 const 1
3 SUBQUERY t8 const PRIMARY PRIMARY 35 1 Using index
Warnings:
Note 1003 select test.t8.pseudo AS `pseudo`,(select test.t8.email AS `email` from test.t8 where (test.t8.pseudo = (select test.t8.pseudo AS `pseudo` from test.t8 where (test.t8.pseudo = _latin1'joce')))) AS `(SELECT email FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce'))` from test.t8 where (test.t8.pseudo = (select test.t8.pseudo AS `pseudo` from test.t8 where (test.t8.pseudo = _latin1'joce')))
Note 1003 select `test`.`t8`.`pseudo` AS `pseudo`,(select `test`.`t8`.`email` AS `email` from `test`.`t8` where (`test`.`t8`.`pseudo` = (select `test`.`t8`.`pseudo` AS `pseudo` from `test`.`t8` where (`test`.`t8`.`pseudo` = _latin1'joce')))) AS `(SELECT email FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce'))` from `test`.`t8` where (`test`.`t8`.`pseudo` = (select `test`.`t8`.`pseudo` AS `pseudo` from `test`.`t8` where (`test`.`t8`.`pseudo` = _latin1'joce')))
SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo,email FROM
t8 WHERE pseudo='joce');
ERROR 21000: Operand should contain 1 column(s)
...
...
@@ -392,13 +392,13 @@ EXPLAIN EXTENDED SELECT DISTINCT date FROM t1 WHERE date='2002-08-03';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index NULL PRIMARY 41 NULL 2 Using where; Using index
Warnings:
Note 1003 select distinct test.t1.date AS `date` from test.t1 where (test.t1.date = 20020803)
Note 1003 select distinct `test`.`t1`.`date` AS `date` from `test`.`t1` where (`test`.`t1`.`date` = 20020803)
EXPLAIN EXTENDED SELECT (SELECT DISTINCT date FROM t1 WHERE date='2002-08-03');
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
2 SUBQUERY t1 index NULL PRIMARY 41 NULL 2 Using where; Using index
Warnings:
Note 1003 select (select distinct test.t1.date AS `date` from test.t1 where (test.t1.date = 20020803)) AS `(SELECT DISTINCT date FROM t1 WHERE date='2002-08-03')`
Note 1003 select (select distinct `test`.`t1`.`date` AS `date` from `test`.`t1` where (`test`.`t1`.`date` = 20020803)) AS `(SELECT DISTINCT date FROM t1 WHERE date='2002-08-03')`
SELECT DISTINCT date FROM t1 WHERE date='2002-08-03';
date
2002-08-03
...
...
@@ -419,7 +419,7 @@ id select_type table type possible_keys key key_len ref rows Extra
3 UNION NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL
Warnings:
Note 1003 select 1 AS `1` from test.t1
Note 1003 select 1 AS `1` from `test`.`t1`
drop table t1;
CREATE TABLE `t1` (
`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
...
...
@@ -539,13 +539,13 @@ EXPLAIN EXTENDED SELECT MAX(numreponse) FROM t1 WHERE numeropost='1';
id select_type table type possible_keys key key_len ref rows Extra
Note 1003 select test.t1.numreponse AS `numreponse` from test.t1 where ((test.t1.numeropost = _latin1'1') and (test.t1.numreponse = 3))
Note 1003 select `test`.`t1`.`numreponse` AS `numreponse` from `test`.`t1` where ((`test`.`t1`.`numeropost` = _latin1'1') and (`test`.`t1`.`numreponse` = 3))
drop table t1;
CREATE TABLE t1 (a int(1));
INSERT INTO t1 VALUES (1);
...
...
@@ -721,7 +721,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ref id id 5 const 1 Using where; Using index
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 select test.t2.id AS `id` from test.t2 where (test.t2.id = 1)
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = 1)
SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3);
id
1
...
...
@@ -734,7 +734,7 @@ id select_type table type possible_keys key key_len ref rows Extra
Warnings:
Note 1249 Select 3 was reduced during optimization
Note 1249 Select 2 was reduced during optimization
Note 1003 select test.t2.id AS `id` from test.t2 where (test.t2.id = (1 + 1))
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where (`test`.`t2`.`id` = (1 + 1))
EXPLAIN EXTENDED SELECT * FROM t2 WHERE id IN (SELECT 1 UNION SELECT 3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index NULL id 5 NULL 2 Using where; Using index
...
...
@@ -742,7 +742,7 @@ id select_type table type possible_keys key key_len ref rows Extra
3 DEPENDENT UNION NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL
Warnings:
Note 1003 select test.t2.id AS `id` from test.t2 where <in_optimizer>(test.t2.id,<exists>(select 1 AS `Not_used` having (<cache>(test.t2.id) = <null_helper>(1)) union select 1 AS `Not_used` having (<cache>(test.t2.id) = <null_helper>(3))))
Note 1003 select `test`.`t2`.`id` AS `id` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`id`,<exists>(select 1 AS `Not_used` having (<cache>(`test`.`t2`.`id`) = <null_helper>(1)) union select 1 AS `Not_used` having (<cache>(`test`.`t2`.`id`) = <null_helper>(3))))
SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 3);
id
SELECT * FROM t2 WHERE id IN (SELECT 5 UNION SELECT 2);
...
...
@@ -868,7 +868,7 @@ id select_type table type possible_keys key key_len ref rows Extra
Warnings:
Note 1276 Field or reference 'a' of SELECT #2 was resolved in SELECT #1
Note 1249 Select 2 was reduced during optimization
Note 1003 select (test.t1.a + 1) AS `(select a+1)` from test.t1
Note 1003 select (`test`.`t1`.`a` + 1) AS `(select a+1)` from `test`.`t1`
select (select a+1) from t1;
(select a+1)
2.5
...
...
@@ -890,7 +890,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL PRIMARY 4 NULL 4 Using index
2 DEPENDENT SUBQUERY t2 index_subquery a a 5 func 2 Using index
Warnings:
Note 1003 select test.t1.a AS `a`,<in_optimizer>(test.t1.a,<exists>(<index_lookup>(<cache>(test.t1.a) in t2 on a chicking NULL))) AS `t1.a in (select t2.a from t2)` from test.t1
Note 1003 select `test`.`t1`.`a` AS `a`,<in_optimizer>(`test`.`t1`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`a`) in t2 on a chicking NULL))) AS `t1.a in (select t2.a from t2)` from `test`.`t1`
CREATE TABLE t3 (a int(11) default '0');
INSERT INTO t3 VALUES (1),(2),(3);
SELECT t1.a, t1.a in (select t2.a from t2,t3 where t3.a=t2.a) FROM t1;
...
...
@@ -905,7 +905,7 @@ id select_type table type possible_keys key key_len ref rows Extra
2 DEPENDENT SUBQUERY t2 ref_or_null a a 5 func 2 Using where; Using index
2 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 3 Using where
Warnings:
Note 1003 select test.t1.a AS `a`,<in_optimizer>(test.t1.a,<exists>(select 1 AS `Not_used` from test.t2 join test.t3 where ((test.t3.a = test.t2.a) and ((<cache>(test.t1.a) = test.t2.a) or isnull(test.t2.a))) having <is_not_null_test>(test.t2.a))) AS `t1.a in (select t2.a from t2,t3 where t3.a=t2.a)` from test.t1
Note 1003 select `test`.`t1`.`a` AS `a`,<in_optimizer>(`test`.`t1`.`a`,<exists>(select 1 AS `Not_used` from `test`.`t2` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t2`.`a`) and ((<cache>(`test`.`t1`.`a`) = `test`.`t2`.`a`) or isnull(`test`.`t2`.`a`))) having <is_not_null_test>(`test`.`t2`.`a`))) AS `t1.a in (select t2.a from t2,t3 where t3.a=t2.a)` from `test`.`t1`
drop table t1,t2,t3;
create table t1 (a float);
select 10.5 IN (SELECT * from t1 LIMIT 1);
...
...
@@ -1015,19 +1015,19 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 const row not found
Warnings:
Note 1003 select sql_no_cache (select sql_no_cache rand() AS `RAND()` from test.t1) AS `(SELECT RAND() FROM t1)` from test.t1
Note 1003 select sql_no_cache (select sql_no_cache rand() AS `RAND()` from `test`.`t1`) AS `(SELECT RAND() FROM t1)` from `test`.`t1`
EXPLAIN EXTENDED SELECT (SELECT ENCRYPT('test') FROM t1) FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 const row not found
Warnings:
Note 1003 select sql_no_cache (select sql_no_cache ecrypt(_latin1'test') AS `ENCRYPT('test')` from test.t1) AS `(SELECT ENCRYPT('test') FROM t1)` from test.t1
Note 1003 select sql_no_cache (select sql_no_cache ecrypt(_latin1'test') AS `ENCRYPT('test')` from `test`.`t1`) AS `(SELECT ENCRYPT('test') FROM t1)` from `test`.`t1`
EXPLAIN EXTENDED SELECT (SELECT BENCHMARK(1,1) FROM t1) FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found
2 UNCACHEABLE SUBQUERY t1 system NULL NULL NULL NULL 0 const row not found
Warnings:
Note 1003 select sql_no_cache (select sql_no_cache benchmark(1,1) AS `BENCHMARK(1,1)` from test.t1) AS `(SELECT BENCHMARK(1,1) FROM t1)` from test.t1
Note 1003 select sql_no_cache (select sql_no_cache benchmark(1,1) AS `BENCHMARK(1,1)` from `test`.`t1`) AS `(SELECT BENCHMARK(1,1) FROM t1)` from `test`.`t1`
drop table t1;
CREATE TABLE `t1` (
`mot` varchar(30) character set latin1 NOT NULL default '',
...
...
@@ -1122,7 +1122,7 @@ id select_type table type possible_keys key key_len ref rows Extra
2 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 3
3 UNCACHEABLE SUBQUERY t1 ALL NULL NULL NULL NULL 3
Warnings:
Note 1003 select sql_no_cache test.t1.a AS `a`,(select sql_no_cache (select sql_no_cache rand() AS `rand()` from test.t1 limit 1) AS `(select rand() from t1 limit 1)` from test.t1 limit 1) AS `(select (select rand() from t1 limit 1) from t1 limit 1)` from test.t1
Note 1003 select sql_no_cache `test`.`t1`.`a` AS `a`,(select sql_no_cache (select sql_no_cache rand() AS `rand()` from `test`.`t1` limit 1) AS `(select rand() from t1 limit 1)` from `test`.`t1` limit 1) AS `(select (select rand() from t1 limit 1) from t1 limit 1)` from `test`.`t1`
drop table t1;
select t1.Continent, t2.Name, t2.Population from t1 LEFT JOIN t2 ON t1.Code = t2.Country where t2.Population IN (select max(t2.Population) AS Population from t2, t1 where t2.Country = t1.Code group by Continent);
ERROR 42S02: Table 'test.t1' doesn't exist
...
...
@@ -1176,7 +1176,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No tables used
Note 1003 select test.t1.id AS `id` from test.t1 where (test.t1.salary = (select max(test.t1.salary) AS `MAX(salary)` from test.t1))
Note 1003 select `test`.`t1`.`id` AS `id` from `test`.`t1` where (`test`.`t1`.`salary` = (select max(`test`.`t1`.`salary`) AS `MAX(salary)` from `test`.`t1`))
drop table t1;
CREATE TABLE t1 (
ID int(10) unsigned NOT NULL auto_increment,
...
...
@@ -1297,7 +1297,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 Using where; Using index
2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 Using index
Warnings:
Note 1003 select test.t2.a AS `a` from test.t2 where <in_optimizer>(test.t2.a,<exists>(<primary_index_lookup>(<cache>(test.t2.a) in t1 on PRIMARY)))
Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(<primary_index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on PRIMARY)))
select * from t2 where t2.a in (select a from t1 where t1.b <> 30);
a
2
...
...
@@ -1307,7 +1307,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index NULL PRIMARY 4 NULL 4 Using where; Using index
2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 Using index; Using where
Warnings:
Note 1003 select test.t2.a AS `a` from test.t2 where <in_optimizer>(test.t2.a,<exists>(<primary_index_lookup>(<cache>(test.t2.a) in t1 on PRIMARY where (test.t1.b <> 30))))
Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(<primary_index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on PRIMARY where (`test`.`t1`.`b` <> 30))))
select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a);
a
2
...
...
@@ -1318,7 +1318,7 @@ id select_type table type possible_keys key key_len ref rows Extra
2 DEPENDENT SUBQUERY t1 eq_ref PRIMARY PRIMARY 4 func 1 Using where
2 DEPENDENT SUBQUERY t3 eq_ref PRIMARY PRIMARY 4 test.t1.b 1 Using where; Using index
Warnings:
Note 1003 select test.t2.a AS `a` from test.t2 where <in_optimizer>(test.t2.a,<exists>(select 1 AS `Not_used` from test.t1 join test.t3 where ((test.t1.b = test.t3.a) and (<cache>(test.t2.a) = test.t1.a))))
Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(select 1 AS `Not_used` from `test`.`t1` join `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`a`) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`))))
drop table t1, t2, t3;
create table t1 (a int, b int, index a (a,b));
create table t2 (a int, index a (a));
...
...
@@ -1336,7 +1336,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index NULL a 5 NULL 4 Using where; Using index
2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 1001 Using index
Warnings:
Note 1003 select test.t2.a AS `a` from test.t2 where <in_optimizer>(test.t2.a,<exists>(<index_lookup>(<cache>(test.t2.a) in t1 on a)))
Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a)))
select * from t2 where t2.a in (select a from t1 where t1.b <> 30);
a
2
...
...
@@ -1346,7 +1346,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index NULL a 5 NULL 4 Using where; Using index
2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 1001 Using index; Using where
Warnings:
Note 1003 select test.t2.a AS `a` from test.t2 where <in_optimizer>(test.t2.a,<exists>(<index_lookup>(<cache>(test.t2.a) in t1 on a where (test.t1.b <> 30))))
Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a where (`test`.`t1`.`b` <> 30))))
select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a);
a
2
...
...
@@ -1357,7 +1357,7 @@ id select_type table type possible_keys key key_len ref rows Extra
2 DEPENDENT SUBQUERY t3 index a a 5 NULL 3 Using index
2 DEPENDENT SUBQUERY t1 ref a a 10 func,test.t3.a 1000 Using where; Using index
Warnings:
Note 1003 select test.t2.a AS `a` from test.t2 where <in_optimizer>(test.t2.a,<exists>(select 1 AS `Not_used` from test.t1 join test.t3 where ((test.t1.b = test.t3.a) and (<cache>(test.t2.a) = test.t1.a))))
Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(select 1 AS `Not_used` from `test`.`t1` join `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`a`) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`))))
insert into t1 values (3,31);
select * from t2 where t2.a in (select a from t1 where t1.b <> 30);
a
...
...
@@ -1373,7 +1373,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index NULL a 5 NULL 4 Using where; Using index
2 DEPENDENT SUBQUERY t1 index_subquery a a 5 func 1001 Using index; Using where
Warnings:
Note 1003 select test.t2.a AS `a` from test.t2 where <in_optimizer>(test.t2.a,<exists>(<index_lookup>(<cache>(test.t2.a) in t1 on a where (test.t1.b <> 30))))
Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(<index_lookup>(<cache>(`test`.`t2`.`a`) in t1 on a where (`test`.`t1`.`b` <> 30))))
drop table t1, t2, t3;
create table t1 (a int, b int);
create table t2 (a int, b int);
...
...
@@ -1430,7 +1430,7 @@ explain extended (select * from t1);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1
Warnings:
Note 1003 (select test.t1.s1 AS `s1` from test.t1)
Note 1003 (select `test`.`t1`.`s1` AS `s1` from `test`.`t1`)
(select * from t1);
s1
tttt
...
...
@@ -1464,25 +1464,25 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 Using index
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 Using index
Warnings:
Note 1003 select test.t1.s1 AS `s1`,not(<in_optimizer>(test.t1.s1,<exists>(<index_lookup>(<cache>(test.t1.s1) in t2 on s1 chicking NULL)))) AS `s1 NOT IN (SELECT s1 FROM t2)` from test.t1
Note 1003 select `test`.`t1`.`s1` AS `s1`,not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 chicking NULL)))) AS `s1 NOT IN (SELECT s1 FROM t2)` from `test`.`t1`
explain extended select s1, s1 = ANY (SELECT s1 FROM t2) from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 Using index
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 Using index
Warnings:
Note 1003 select test.t1.s1 AS `s1`,<in_optimizer>(test.t1.s1,<exists>(<index_lookup>(<cache>(test.t1.s1) in t2 on s1 chicking NULL))) AS `s1 = ANY (SELECT s1 FROM t2)` from test.t1
Note 1003 select `test`.`t1`.`s1` AS `s1`,<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 chicking NULL))) AS `s1 = ANY (SELECT s1 FROM t2)` from `test`.`t1`
explain extended select s1, s1 <> ALL (SELECT s1 FROM t2) from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 Using index
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 2 Using index
Warnings:
Note 1003 select test.t1.s1 AS `s1`,not(<in_optimizer>(test.t1.s1,<exists>(<index_lookup>(<cache>(test.t1.s1) in t2 on s1 chicking NULL)))) AS `s1 <> ALL (SELECT s1 FROM t2)` from test.t1
Note 1003 select `test`.`t1`.`s1` AS `s1`,not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 chicking NULL)))) AS `s1 <> ALL (SELECT s1 FROM t2)` from `test`.`t1`
explain extended select s1, s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2') from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index NULL s1 6 NULL 3 Using index
2 DEPENDENT SUBQUERY t2 index_subquery s1 s1 6 func 1 Using index; Using where
Warnings:
Note 1003 select test.t1.s1 AS `s1`,not(<in_optimizer>(test.t1.s1,<exists>(<index_lookup>(<cache>(test.t1.s1) in t2 on s1 chicking NULL where (test.t2.s1 < _latin1'a2'))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from test.t1
Note 1003 select `test`.`t1`.`s1` AS `s1`,not(<in_optimizer>(`test`.`t1`.`s1`,<exists>(<index_lookup>(<cache>(`test`.`t1`.`s1`) in t2 on s1 chicking NULL where (`test`.`t2`.`s1` < _latin1'a2'))))) AS `s1 NOT IN (SELECT s1 FROM t2 WHERE s1 < 'a2')` from `test`.`t1`
drop table t1,t2;
create table t2 (a int, b int);
create table t3 (a int);
...
...
@@ -1497,7 +1497,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 Using where
2 SUBQUERY t2 system NULL NULL NULL NULL 0 const row not found
Warnings:
Note 1003 select test.t3.a AS `a` from test.t3 where <not>((test.t3.a < (select max(test.t2.b) from test.t2)))
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` < (select max(`test`.`t2`.`b`) from `test`.`t2`)))
insert into t2 values (2,2), (2,1), (3,3), (3,1);
select * from t3 where a > all (select max(b) from t2 group by a);
a
...
...
@@ -1508,7 +1508,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort
Warnings:
Note 1003 select test.t3.a AS `a` from test.t3 where <not>((test.t3.a <= <max>(select max(test.t2.b) AS `max(b)` from test.t2 group by test.t2.a)))
Note 1003 select `test`.`t3`.`a` AS `a` from `test`.`t3` where <not>((`test`.`t3`.`a` <= <max>(select max(`test`.`t2`.`b`) AS `max(b)` from `test`.`t2` group by `test`.`t2`.`a`)))
drop table t2, t3;
CREATE TABLE `t1` ( `id` mediumint(9) NOT NULL auto_increment, `taskid` bigint(20) NOT NULL default '0', `dbid` int(11) NOT NULL default '0', `create_date` datetime NOT NULL default '0000-00-00 00:00:00', `last_update` datetime NOT NULL default '0000-00-00 00:00:00', PRIMARY KEY (`id`)) ENGINE=MyISAM CHARSET=latin1 AUTO_INCREMENT=3 ;
INSERT INTO t1 VALUES ('69294728265'),('18621828126'),('89356874041'),('95895001874');
...
...
@@ -1676,14 +1676,14 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 12 Using where
2 DEPENDENT SUBQUERY t1 unique_subquery PRIMARY PRIMARY 4 func 1 Using index; Using where
Warnings:
Note 1003 select test.t1.id AS `id`,test.t1.text AS `text` from test.t1 where not(<in_optimizer>(test.t1.id,<exists>(<primary_index_lookup>(<cache>(test.t1.id) in t1 on PRIMARY where (test.t1.id < 8)))))
Note 1003 select `test`.`t1`.`id` AS `id`,`test`.`t1`.`text` AS `text` from `test`.`t1` where not(<in_optimizer>(`test`.`t1`.`id`,<exists>(<primary_index_lookup>(<cache>(`test`.`t1`.`id`) in t1 on PRIMARY where (`test`.`t1`.`id` < 8)))))
explain extended select * from t1 as tt where not exists (select id from t1 where id < 8 and (id = tt.id or id is null) having id is not null);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY tt ALL NULL NULL NULL NULL 12 Using where
2 DEPENDENT SUBQUERY t1 eq_ref PRIMARY PRIMARY 4 test.tt.id 7 Using where; Using index
Warnings:
Note 1276 Field or reference 'tt.id' of SELECT #2 was resolved in SELECT #1
Note 1003 select test.tt.id AS `id`,test.tt.text AS `text` from test.t1 tt where not(exists(select test.t1.id AS `id` from test.t1 where ((test.t1.id < 8) and ((test.t1.id = test.tt.id) or isnull(test.t1.id))) having (test.t1.id is not null)))
Note 1003 select `test`.`tt`.`id` AS `id`,`test`.`tt`.`text` AS `text` from `test`.`t1` `tt` where not(exists(select `test`.`t1`.`id` AS `id` from `test`.`t1` where ((`test`.`t1`.`id` < 8) and ((`test`.`t1`.`id` = `test`.`tt`.`id`) or isnull(`test`.`t1`.`id`))) having (`test`.`t1`.`id` is not null)))
insert into t1 (id, text) values (1000, 'text1000'), (1001, 'text1001');
create table t2 (id int not null, text varchar(20) not null default '', primary key (id));
@@ -1709,7 +1709,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE b eq_ref PRIMARY PRIMARY 4 test.a.id 2
1 SIMPLE c eq_ref PRIMARY PRIMARY 4 func 1 Using where
Warnings:
Note 1003 select test.a.id AS `id`,test.a.text AS `text`,test.b.id AS `id`,test.b.text AS `text`,test.c.id AS `id`,test.c.text AS `text` from test.t1 a left join test.t2 b on(((test.a.id = test.b.id) or isnull(test.b.id))) join test.t1 c where (if(isnull(test.b.id),1000,test.b.id) = test.c.id)
Note 1003 select `test`.`a`.`id` AS `id`,`test`.`a`.`text` AS `text`,`test`.`b`.`id` AS `id`,`test`.`b`.`text` AS `text`,`test`.`c`.`id` AS `id`,`test`.`c`.`text` AS `text` from `test`.`t1` `a` left join `test`.`t2` `b` on(((`test`.`a`.`id` = `test`.`b`.`id`) or isnull(`test`.`b`.`id`))) join `test`.`t1` `c` where (if(isnull(`test`.`b`.`id`),1000,`test`.`b`.`id`) = `test`.`c`.`id`)
drop table t1,t2;
create table t1 (a int);
insert into t1 values (1);
...
...
@@ -1837,7 +1837,7 @@ id select_type table type possible_keys key key_len ref rows Extra
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 Using where
Warnings:
Note 1276 Field or reference 'up.a' of SELECT #2 was resolved in SELECT #1
Note 1003 select test.up.a AS `a`,test.up.b AS `b` from test.t1 up where exists(select 1 AS `Not_used` from test.t1 where (test.t1.a = test.up.a))
Note 1003 select `test`.`up`.`a` AS `a`,`test`.`up`.`b` AS `b` from `test`.`t1` `up` where exists(select 1 AS `Not_used` from `test`.`t1` where (`test`.`t1`.`a` = `test`.`up`.`a`))
@@ -88,7 +88,7 @@ id select_type table type possible_keys key key_len ref rows Extra
2 UNION t2 ALL NULL NULL NULL NULL 4 Using filesort
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL Using filesort
Warnings:
Note 1003 (select test.t1.a AS `a`,test.t1.b AS `b` from test.t1 limit 2) union all (select test.t2.a AS `a`,test.t2.b AS `b` from test.t2 order by test.t2.a limit 1) order by b desc
Note 1003 (select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` limit 2) union all (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` order by `test`.`t2`.`a` limit 1) order by `b` desc
(select sql_calc_found_rows a,b from t1 limit 2) union all (select a,b from t2 order by a) limit 2;
a b
1 a
...
...
@@ -472,7 +472,7 @@ id select_type table type possible_keys key key_len ref rows Extra
2 UNION t2 const PRIMARY PRIMARY 4 const 1
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (select test.t1.a AS `a`,test.t1.b AS `b` from test.t1 where (test.t1.a = 1)) union (select test.t2.a AS `a`,test.t2.b AS `b` from test.t2 where (test.t2.a = 1))
Note 1003 (select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`a` = 1)) union (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` = 1))
(select * from t1 where a=5) union (select * from t2 where a=1);
@@ -15,7 +15,7 @@ explain extended select * from t1 where UNIQ=0x38afba1d73e6a18a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 const UNIQ UNIQ 8 const 1
Warnings:
Note 1003 select test.t1.ID AS `ID`,test.t1.UNIQ AS `UNIQ` from test.t1 where (test.t1.UNIQ = 4084688022709641610)
Note 1003 select `test`.`t1`.`ID` AS `ID`,`test`.`t1`.`UNIQ` AS `UNIQ` from `test`.`t1` where (`test`.`t1`.`UNIQ` = 4084688022709641610)
drop table t1;
select x'hello';
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'x'hello'' at line 1