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Kirill Smelkov
mariadb
Commits
791deb8b
Commit
791deb8b
authored
Nov 01, 2007
by
istruewing@stella.local
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Merge stella.local:/home2/mydev/mysql-5.0-axmrg
into stella.local:/home2/mydev/mysql-5.1-axmrg
parents
3707119e
fc888bc9
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1
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mysql-test/include/gis_keys.inc
mysql-test/include/gis_keys.inc
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mysql-test/include/gis_keys.inc
View file @
791deb8b
...
...
@@ -13,20 +13,20 @@ CREATE TABLE t2 (p POINT, INDEX(p));
INSERT
INTO
t1
VALUES
(
POINTFROMTEXT
(
'POINT(1 2)'
));
INSERT
INTO
t2
VALUES
(
POINTFROMTEXT
(
'POINT(1 2)'
));
--
no
index
,
returns
1
as
expected
#
no index, returns 1 as expected
SELECT
COUNT
(
*
)
FROM
t1
WHERE
p
=
POINTFROMTEXT
(
'POINT(1 2)'
);
--
with
index
,
returns
1
as
expected
--
EXPLAIN
shows
that
the
index
is
not
used
though
--
due
to
the
"most rows covered anyway, so a scan is more effective"
rule
#
with index, returns 1 as expected
#
EXPLAIN shows that the index is not used though
#
due to the "most rows covered anyway, so a scan is more effective" rule
EXPLAIN
SELECT
COUNT
(
*
)
FROM
t2
WHERE
p
=
POINTFROMTEXT
(
'POINT(1 2)'
);
SELECT
COUNT
(
*
)
FROM
t2
WHERE
p
=
POINTFROMTEXT
(
'POINT(1 2)'
);
--
adding
another
row
to
the
table
so
that
--
the
"most rows covered"
rule
doesn
't kick in anymore
-- now EXPLAIN shows the index used on the table
# adding another row to the table so that
# the "most rows covered" rule doesn't kick in anymore
# now EXPLAIN shows the index used on the table
# and we're getting the wrong result again
INSERT
INTO
t1
VALUES
(
POINTFROMTEXT
(
'POINT(1 2)'
));
INSERT
INTO
t2
VALUES
(
POINTFROMTEXT
(
'POINT(1 2)'
));
EXPLAIN
...
...
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