# # Test file for WL#1724 (Min/Max Optimization for Queries with Group By Clause). # The queries in this file test query execution via QUICK_GROUP_MIN_MAX_SELECT. # # # TODO: # Add queries with: # - C != const # - C IS NOT NULL # - HAVING clause --disable_warnings drop table if exists t1; --enable_warnings create table t1 ( a1 char(64), a2 char(64), b char(16), c char(16) not null, d char(16), dummy char(64) default ' ' ); insert into t1 (a1, a2, b, c, d) values ('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'), ('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'), ('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'), ('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'), ('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'), ('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'), ('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'), ('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'), ('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'), ('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'), ('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'), ('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'), ('d','a','a','a411','xy1'),('d','a','a','b411','xy2'),('d','a','a','c411','xy3'),('d','a','a','d411','xy4'), ('d','a','b','e412','xy1'),('d','a','b','f412','xy2'),('d','a','b','g412','xy3'),('d','a','b','h412','xy4'), ('d','b','a','i421','xy1'),('d','b','a','j421','xy2'),('d','b','a','k421','xy3'),('d','b','a','l421','xy4'), ('d','b','b','m422','xy1'),('d','b','b','n422','xy2'),('d','b','b','o422','xy3'),('d','b','b','p422','xy4'), ('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'), ('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'), ('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'), ('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'), ('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'), ('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'), ('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'), ('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'), ('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'), ('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'), ('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'), ('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'), ('d','a','a','a411','xy1'),('d','a','a','b411','xy2'),('d','a','a','c411','xy3'),('d','a','a','d411','xy4'), ('d','a','b','e412','xy1'),('d','a','b','f412','xy2'),('d','a','b','g412','xy3'),('d','a','b','h412','xy4'), ('d','b','a','i421','xy1'),('d','b','a','j421','xy2'),('d','b','a','k421','xy3'),('d','b','a','l421','xy4'), ('d','b','b','m422','xy1'),('d','b','b','n422','xy2'),('d','b','b','o422','xy3'),('d','b','b','p422','xy4'); create index idx_t1_0 on t1 (a1); create index idx_t1_1 on t1 (a1,a2,b,c); create index idx_t1_2 on t1 (a1,a2,b); analyze table t1; -- t2 is the same as t1, but with some NULLs in the MIN/MAX column, and one more -- nullable attribute --disable_warnings drop table if exists t2; --enable_warnings create table t2 ( a1 char(64), a2 char(64) not null, b char(16), c char(16), d char(16), dummy char(64) default ' ' ); insert into t2 select * from t1; -- add few rows with NULL's in the MIN/MAX column insert into t2 (a1, a2, b, c, d) values ('a','a',NULL,'a777','xyz'),('a','a',NULL,'a888','xyz'),('a','a',NULL,'a999','xyz'), ('a','a','a',NULL,'xyz'), ('a','a','b',NULL,'xyz'), ('a','b','a',NULL,'xyz'), ('c','a',NULL,'c777','xyz'),('c','a',NULL,'c888','xyz'),('c','a',NULL,'c999','xyz'), ('d','b','b',NULL,'xyz'), ('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'), ('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'), ('a','a',NULL,'a777','xyz'),('a','a',NULL,'a888','xyz'),('a','a',NULL,'a999','xyz'), ('a','a','a',NULL,'xyz'), ('a','a','b',NULL,'xyz'), ('a','b','a',NULL,'xyz'), ('c','a',NULL,'c777','xyz'),('c','a',NULL,'c888','xyz'),('c','a',NULL,'c999','xyz'), ('d','b','b',NULL,'xyz'), ('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'), ('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'); create index idx_t2_0 on t2 (a1); create index idx_t2_1 on t2 (a1,a2,b,c); create index idx_t2_2 on t2 (a1,a2,b); analyze table t2; -- Table t3 is the same as t1, but with smaller column lenghts. -- This allows to test different branches of the cost computation procedure -- when the number of keys per block are less than the number of keys in the -- sub-groups formed by predicates over non-group attributes. --disable_warnings drop table if exists t3; --enable_warnings create table t3 ( a1 char(1), a2 char(1), b char(1), c char(4) not null, d char(3), dummy char(1) default ' ' ); insert into t3 (a1, a2, b, c, d) values ('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'), ('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'), ('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'), ('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'), ('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'), ('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'), ('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'), ('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'), ('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'), ('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'), ('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'), ('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'); insert into t3 (a1, a2, b, c, d) values ('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'), ('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'), ('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'), ('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'), ('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'), ('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'), ('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'), ('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'), ('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'), ('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'), ('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'), ('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'); insert into t3 (a1, a2, b, c, d) values ('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'), ('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'), ('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'), ('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'), ('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'), ('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'), ('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'), ('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'), ('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'), ('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'), ('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'), ('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'); insert into t3 (a1, a2, b, c, d) values ('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'), ('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'), ('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'), ('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'), ('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'), ('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'), ('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'), ('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'), ('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'), ('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'), ('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'), ('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'); create index idx_t3_0 on t3 (a1); create index idx_t3_1 on t3 (a1,a2,b,c); create index idx_t3_2 on t3 (a1,a2,b); analyze table t3; -- -- Queries without a WHERE clause. These queries do not use ranges. -- -- plans explain select a1, min(a2) from t1 group by a1; explain select a1, max(a2) from t1 group by a1; explain select a1, min(a2), max(a2) from t1 group by a1; explain select a1, a2, b, min(c), max(c) from t1 group by a1,a2,b; explain select a1,a2,b,max(c),min(c) from t1 group by a1,a2,b; --replace_column 7 # 9 # explain select a1,a2,b,max(c),min(c) from t2 group by a1,a2,b; -- Select fields in different order explain select min(a2), a1, max(a2), min(a2), a1 from t1 group by a1; explain select a1, b, min(c), a1, max(c), b, a2, max(c), max(c) from t1 group by a1, a2, b; explain select min(a2) from t1 group by a1; explain select a2, min(c), max(c) from t1 group by a1,a2,b; -- queries select a1, min(a2) from t1 group by a1; select a1, max(a2) from t1 group by a1; select a1, min(a2), max(a2) from t1 group by a1; select a1, a2, b, min(c), max(c) from t1 group by a1,a2,b; select a1,a2,b,max(c),min(c) from t1 group by a1,a2,b; select a1,a2,b,max(c),min(c) from t2 group by a1,a2,b; -- Select fields in different order select min(a2), a1, max(a2), min(a2), a1 from t1 group by a1; select a1, b, min(c), a1, max(c), b, a2, max(c), max(c) from t1 group by a1, a2, b; select min(a2) from t1 group by a1; select a2, min(c), max(c) from t1 group by a1,a2,b; -- -- Queries with a where clause -- -- A) Preds only over the group 'A' attributes -- plans explain select a1,a2,b,min(c),max(c) from t1 where a1 < 'd' group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where a1 >= 'b' group by a1,a2,b; explain select a1,a2,b, max(c) from t1 where a1 >= 'c' or a1 < 'b' group by a1,a2,b; explain select a1, max(c) from t1 where a1 >= 'c' or a1 < 'b' group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where a1 >= 'c' or a2 < 'b' group by a1,a2,b; explain select a1,a2,b, max(c) from t1 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b; explain select a1,a2,b, max(c) from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b; explain select a1,min(c),max(c) from t1 where a1 >= 'b' group by a1,a2,b; explain select a1, max(c) from t1 where a1 in ('a','b','d') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b, max(c) from t2 where a1 < 'd' group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where a1 < 'd' group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where a1 >= 'b' group by a1,a2,b; --replace_column 9 # explain select a1,a2,b, max(c) from t2 where a1 >= 'c' or a1 < 'b' group by a1,a2,b; --replace_column 9 # explain select a1, max(c) from t2 where a1 >= 'c' or a1 < 'b' group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where a1 >= 'c' or a2 < 'b' group by a1,a2,b; --replace_column 9 # explain select a1,a2,b, max(c) from t2 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b; --replace_column 9 # explain select a1,a2,b, max(c) from t2 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b; --replace_column 9 # explain select a1,min(c),max(c) from t2 where a1 >= 'b' group by a1,a2,b; --replace_column 9 # explain select a1, max(c) from t2 where a1 in ('a','b','d') group by a1,a2,b; -- queries select a1,a2,b,min(c),max(c) from t1 where a1 < 'd' group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where a1 >= 'b' group by a1,a2,b; select a1,a2,b, max(c) from t1 where a1 >= 'c' or a1 < 'b' group by a1,a2,b; select a1, max(c) from t1 where a1 >= 'c' or a1 < 'b' group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where a1 >= 'c' or a2 < 'b' group by a1,a2,b; select a1,a2,b, max(c) from t1 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b; select a1,a2,b, max(c) from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b; select a1,min(c),max(c) from t1 where a1 >= 'b' group by a1,a2,b; select a1, max(c) from t1 where a1 in ('a','b','d') group by a1,a2,b; select a1,a2,b, max(c) from t2 where a1 < 'd' group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where a1 < 'd' group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where a1 >= 'b' group by a1,a2,b; select a1,a2,b, max(c) from t2 where a1 >= 'c' or a1 < 'b' group by a1,a2,b; select a1, max(c) from t2 where a1 >= 'c' or a1 < 'b' group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where a1 >= 'c' or a2 < 'b' group by a1,a2,b; select a1,a2,b, max(c) from t2 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b; select a1,a2,b, max(c) from t2 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b; select a1,min(c),max(c) from t2 where a1 >= 'b' group by a1,a2,b; select a1, max(c) from t2 where a1 in ('a','b','d') group by a1,a2,b; -- B) Equalities only over the non-group 'B' attributes -- plans explain select a1,a2,b,max(c),min(c) from t1 where (a2 = 'a') and (b = 'b') group by a1; explain select a1,max(c),min(c) from t1 where (a2 = 'a') and (b = 'b') group by a1; explain select a1,a2,b, max(c) from t1 where (b = 'b') group by a1,a2; explain select a1,a2,b,min(c),max(c) from t1 where (b = 'b') group by a1,a2; explain select a1,a2, max(c) from t1 where (b = 'b') group by a1,a2; explain select a1,a2,b,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') group by a1; explain select a1,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') group by a1; explain select a1,a2,b, max(c) from t2 where (b = 'b') group by a1,a2; explain select a1,a2,b,min(c),max(c) from t2 where (b = 'b') group by a1,a2; explain select a1,a2, max(c) from t2 where (b = 'b') group by a1,a2; -- these queries test case 2) in TRP_GROUP_MIN_MAX::update_cost() explain select a1,a2,b,max(c),min(c) from t3 where (a2 = 'a') and (b = 'b') group by a1; explain select a1,max(c),min(c) from t3 where (a2 = 'a') and (b = 'b') group by a1; -- queries select a1,a2,b,max(c),min(c) from t1 where (a2 = 'a') and (b = 'b') group by a1; select a1,max(c),min(c) from t1 where (a2 = 'a') and (b = 'b') group by a1; select a1,a2,b, max(c) from t1 where (b = 'b') group by a1,a2; select a1,a2,b,min(c),max(c) from t1 where (b = 'b') group by a1,a2; select a1,a2, max(c) from t1 where (b = 'b') group by a1,a2; select a1,a2,b,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') group by a1; select a1,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') group by a1; select a1,a2,b, max(c) from t2 where (b = 'b') group by a1,a2; select a1,a2,b,min(c),max(c) from t2 where (b = 'b') group by a1,a2; select a1,a2, max(c) from t2 where (b = 'b') group by a1,a2; -- these queries test case 2) in TRP_GROUP_MIN_MAX::update_cost() select a1,a2,b,max(c),min(c) from t3 where (a2 = 'a') and (b = 'b') group by a1; select a1,max(c),min(c) from t3 where (a2 = 'a') and (b = 'b') group by a1; -- IS NULL (makes sense for t2 only) -- plans explain select a1,a2,b,min(c) from t2 where (a2 = 'a') and b is NULL group by a1; explain select a1,a2,b,max(c) from t2 where (a2 = 'a') and b is NULL group by a1; explain select a1,a2,b,min(c) from t2 where b is NULL group by a1,a2; explain select a1,a2,b,max(c) from t2 where b is NULL group by a1,a2; explain select a1,a2,b,min(c),max(c) from t2 where b is NULL group by a1,a2; explain select a1,a2,b,min(c),max(c) from t2 where b is NULL group by a1,a2; -- queries select a1,a2,b,min(c) from t2 where (a2 = 'a') and b is NULL group by a1; select a1,a2,b,max(c) from t2 where (a2 = 'a') and b is NULL group by a1; select a1,a2,b,min(c) from t2 where b is NULL group by a1,a2; select a1,a2,b,max(c) from t2 where b is NULL group by a1,a2; select a1,a2,b,min(c),max(c) from t2 where b is NULL group by a1,a2; select a1,a2,b,min(c),max(c) from t2 where b is NULL group by a1,a2; -- C) Range predicates for the MIN/MAX attribute -- plans --replace_column 9 # explain select a1,a2,b, max(c) from t1 where (c > 'b1') group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where (c > 'b1') group by a1,a2,b; explain select a1,a2,b, max(c) from t1 where (c > 'f123') group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where (c > 'f123') group by a1,a2,b; explain select a1,a2,b, max(c) from t1 where (c < 'a0') group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where (c < 'a0') group by a1,a2,b; explain select a1,a2,b, max(c) from t1 where (c < 'k321') group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where (c < 'k321') group by a1,a2,b; explain select a1,a2,b, max(c) from t1 where (c < 'a0') or (c > 'b1') group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where (c < 'a0') or (c > 'b1') group by a1,a2,b; explain select a1,a2,b, max(c) from t1 where (c > 'b1') or (c <= 'g1') group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where (c > 'b1') or (c <= 'g1') group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where (c > 'b111') and (c <= 'g112') group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where (c < 'c5') or (c = 'g412') or (c = 'k421') group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where ((c > 'b111') and (c <= 'g112')) or ((c > 'd000') and (c <= 'i110')) group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where (c between 'b111' and 'g112') or (c between 'd000' and 'i110') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b, max(c) from t2 where (c > 'b1') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where (c > 'b1') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b, max(c) from t2 where (c > 'f123') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where (c > 'f123') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b, max(c) from t2 where (c < 'a0') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where (c < 'a0') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b, max(c) from t2 where (c < 'k321') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where (c < 'k321') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b, max(c) from t2 where (c < 'a0') or (c > 'b1') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where (c < 'a0') or (c > 'b1') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b, max(c) from t2 where (c > 'b1') or (c <= 'g1') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where (c > 'b1') or (c <= 'g1') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where (c > 'b111') and (c <= 'g112') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where (c < 'c5') or (c = 'g412') or (c = 'k421') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where ((c > 'b111') and (c <= 'g112')) or ((c > 'd000') and (c <= 'i110')) group by a1,a2,b; -- queries select a1,a2,b, max(c) from t1 where (c > 'b1') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where (c > 'b1') group by a1,a2,b; select a1,a2,b, max(c) from t1 where (c > 'f123') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where (c > 'f123') group by a1,a2,b; select a1,a2,b, max(c) from t1 where (c < 'a0') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where (c < 'a0') group by a1,a2,b; select a1,a2,b, max(c) from t1 where (c < 'k321') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where (c < 'k321') group by a1,a2,b; select a1,a2,b, max(c) from t1 where (c < 'a0') or (c > 'b1') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where (c < 'a0') or (c > 'b1') group by a1,a2,b; select a1,a2,b, max(c) from t1 where (c > 'b1') or (c <= 'g1') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where (c > 'b1') or (c <= 'g1') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where (c > 'b111') and (c <= 'g112') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where (c < 'c5') or (c = 'g412') or (c = 'k421') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where ((c > 'b111') and (c <= 'g112')) or ((c > 'd000') and (c <= 'i110')) group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where (c between 'b111' and 'g112') or (c between 'd000' and 'i110') group by a1,a2,b; select a1,a2,b, max(c) from t2 where (c > 'b1') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where (c > 'b1') group by a1,a2,b; select a1,a2,b, max(c) from t2 where (c > 'f123') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where (c > 'f123') group by a1,a2,b; select a1,a2,b, max(c) from t2 where (c < 'a0') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where (c < 'a0') group by a1,a2,b; select a1,a2,b, max(c) from t2 where (c < 'k321') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where (c < 'k321') group by a1,a2,b; select a1,a2,b, max(c) from t2 where (c < 'a0') or (c > 'b1') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where (c < 'a0') or (c > 'b1') group by a1,a2,b; select a1,a2,b, max(c) from t2 where (c > 'b1') or (c <= 'g1') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where (c > 'b1') or (c <= 'g1') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where (c > 'b111') and (c <= 'g112') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where (c < 'c5') or (c = 'g412') or (c = 'k421') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where ((c > 'b111') and (c <= 'g112')) or ((c > 'd000') and (c <= 'i110')) group by a1,a2,b; -- analyze the sub-select explain select a1,a2,b,min(c),max(c) from t1 where exists ( select * from t2 where t2.c = t1.c ) group by a1,a2,b; -- the sub-select is unrelated to MIN/MAX explain select a1,a2,b,min(c),max(c) from t1 where exists ( select * from t2 where t2.c > 'b1' ) group by a1,a2,b; -- A,B,C) Predicates referencing mixed classes of attributes -- plans explain select a1,a2,b,min(c),max(c) from t1 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where (a1 >= 'c' or a2 < 'b') and (c > 'b111') group by a1,a2,b; explain select a1,a2,b,min(c),max(c) from t1 where (a2 >= 'b') and (b = 'a') and (c > 'b111') group by a1,a2,b; explain select a1,a2,b,min(c) from t1 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c < 'h112') or (c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122')) group by a1,a2,b; explain select a1,a2,b,min(c) from t1 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122') or (c < 'h112') or (c = 'c111')) group by a1,a2,b; explain select a1,a2,b,min(c) from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b; explain select a1,a2,b,min(c) from t1 where (ord(a1) > 97) and (ord(a2) + ord(a1) > 194) and (b = 'c') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where (a1 >= 'c' or a2 < 'b') and (c > 'b111') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c),max(c) from t2 where (a2 >= 'b') and (b = 'a') and (c > 'b111') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c) from t2 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c < 'h112') or (c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122')) group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c) from t2 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122') or (c < 'h112') or (c = 'c111')) group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,min(c) from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b; -- queries select a1,a2,b,min(c),max(c) from t1 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where (a1 >= 'c' or a2 < 'b') and (c > 'b111') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t1 where (a2 >= 'b') and (b = 'a') and (c > 'b111') group by a1,a2,b; select a1,a2,b,min(c) from t1 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c < 'h112') or (c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122')) group by a1,a2,b; select a1,a2,b,min(c) from t1 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122') or (c < 'h112') or (c = 'c111')) group by a1,a2,b; select a1,a2,b,min(c) from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b; select a1,a2,b,min(c) from t1 where (ord(a1) > 97) and (ord(a2) + ord(a1) > 194) and (b = 'c') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where (a1 >= 'c' or a2 < 'b') and (c > 'b111') group by a1,a2,b; select a1,a2,b,min(c),max(c) from t2 where (a2 >= 'b') and (b = 'a') and (c > 'b111') group by a1,a2,b; select a1,a2,b,min(c) from t2 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c < 'h112') or (c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122')) group by a1,a2,b; select a1,a2,b,min(c) from t2 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122') or (c < 'h112') or (c = 'c111')) group by a1,a2,b; select a1,a2,b,min(c) from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b; -- -- GROUP BY queries without MIN/MAX -- -- plans explain select a1,a2,b from t1 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b; explain select a1,a2,b from t1 where (a2 >= 'b') and (b = 'a') group by a1,a2,b; explain select a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b; explain select a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b from t2 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b; --replace_column 9 # explain select a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b; -- queries select a1,a2,b from t1 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b; select a1,a2,b from t1 where (a2 >= 'b') and (b = 'a') group by a1,a2,b; select a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b; select a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b; select a1,a2,b from t2 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b; select a1,a2,b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b; select a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b; select a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b; -- -- DISTINCT queries -- -- plans explain select distinct a1,a2,b from t1; explain select distinct a1,a2,b from t1 where (a2 >= 'b') and (b = 'a'); explain select distinct a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121'); explain select distinct a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c'); explain select distinct b from t1 where (a2 >= 'b') and (b = 'a'); --replace_column 9 # explain select distinct a1,a2,b from t2; --replace_column 9 # explain select distinct a1,a2,b from t2 where (a2 >= 'b') and (b = 'a'); explain select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121'); --replace_column 9 # explain select distinct a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c'); explain select distinct b from t2 where (a2 >= 'b') and (b = 'a'); -- queries select distinct a1,a2,b from t1; select distinct a1,a2,b from t1 where (a2 >= 'b') and (b = 'a'); select distinct a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121'); select distinct a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c'); select distinct b from t1 where (a2 >= 'b') and (b = 'a'); select distinct a1,a2,b from t2; select distinct a1,a2,b from t2 where (a2 >= 'b') and (b = 'a'); select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121'); select distinct a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c'); select distinct b from t2 where (a2 >= 'b') and (b = 'a'); -- BUG #6303 select distinct t_00.a1 from t1 t_00 where exists ( select * from t2 where a1 = t_00.a1 ); -- BUG #8532 - SELECT DISTINCT a, a causes server to crash select distinct a1,a1 from t1; select distinct a2,a1,a2,a1 from t1; select distinct t1.a1,t2.a1 from t1,t2; -- -- DISTINCT queries with GROUP-BY -- -- plans explain select distinct a1,a2,b from t1; explain select distinct a1,a2,b from t1 where (a2 >= 'b') and (b = 'a') group by a1,a2,b; explain select distinct a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b; explain select distinct a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b; explain select distinct b from t1 where (a2 >= 'b') and (b = 'a') group by a1,a2,b; --replace_column 9 # explain select distinct a1,a2,b from t2; --replace_column 9 # explain select distinct a1,a2,b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b; --replace_column 9 # explain select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b; --replace_column 9 # explain select distinct a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b; --replace_column 9 # explain select distinct b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b; -- queries select distinct a1,a2,b from t1; select distinct a1,a2,b from t1 where (a2 >= 'b') and (b = 'a') group by a1,a2,b; select distinct a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b; select distinct a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b; select distinct b from t1 where (a2 >= 'b') and (b = 'a') group by a1,a2,b; select distinct a1,a2,b from t2; select distinct a1,a2,b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b; select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b; select distinct a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b; select distinct b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b; -- -- COUNT (DISTINCT cols) queries -- explain select count(distinct a1,a2,b) from t1 where (a2 >= 'b') and (b = 'a'); explain select count(distinct a1,a2,b,c) from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121'); explain select count(distinct a1,a2,b) from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c'); explain select count(distinct b) from t1 where (a2 >= 'b') and (b = 'a'); explain select ord(a1) + count(distinct a1,a2,b) from t1 where (a1 > 'a') and (a2 > 'a'); select count(distinct a1,a2,b) from t1 where (a2 >= 'b') and (b = 'a'); select count(distinct a1,a2,b,c) from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121'); select count(distinct a1,a2,b) from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c'); select count(distinct b) from t1 where (a2 >= 'b') and (b = 'a'); select ord(a1) + count(distinct a1,a2,b) from t1 where (a1 > 'a') and (a2 > 'a'); -- -- Queries with expressions in the select clause -- explain select a1,a2,b, concat(min(c), max(c)) from t1 where a1 < 'd' group by a1,a2,b; explain select concat(a1,min(c)),b from t1 where a1 < 'd' group by a1,a2,b; explain select concat(a1,min(c)),b,max(c) from t1 where a1 < 'd' group by a1,a2,b; explain select concat(a1,a2),b,min(c),max(c) from t1 where a1 < 'd' group by a1,a2,b; explain select concat(ord(min(b)),ord(max(b))),min(b),max(b) from t1 group by a1,a2; select a1,a2,b, concat(min(c), max(c)) from t1 where a1 < 'd' group by a1,a2,b; select concat(a1,min(c)),b from t1 where a1 < 'd' group by a1,a2,b; select concat(a1,min(c)),b,max(c) from t1 where a1 < 'd' group by a1,a2,b; select concat(a1,a2),b,min(c),max(c) from t1 where a1 < 'd' group by a1,a2,b; select concat(ord(min(b)),ord(max(b))),min(b),max(b) from t1 group by a1,a2; -- -- Negative examples: queries that should NOT be treated as optimizable by -- QUICK_GROUP_MIN_MAX_SELECT -- -- select a non-indexed attribute explain select a1,a2,b,d,min(c),max(c) from t1 group by a1,a2,b; explain select a1,a2,b,d from t1 group by a1,a2,b; -- predicate that references an attribute that is after the MIN/MAX argument -- in the index explain select a1,a2,min(b),max(b) from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (c > 'a111') group by a1,a2; -- predicate that references a non-indexed attribute explain select a1,a2,b,min(c),max(c) from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (d > 'xy2') group by a1,a2,b; explain select a1,a2,b,c from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (d > 'xy2') group by a1,a2,b,c; -- non-equality predicate for a non-group select attribute explain select a1,a2,b,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') or (b < 'b') group by a1; explain select a1,a2,b from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (c > 'a111') group by a1,a2,b; -- non-group field with an equality predicate that references a keypart after the -- MIN/MAX argument explain select a1,a2,min(b),c from t2 where (a2 = 'a') and (c = 'a111') group by a1; select a1,a2,min(b),c from t2 where (a2 = 'a') and (c = 'a111') group by a1; -- disjunction for a non-group select attribute explain select a1,a2,b,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') or (b = 'a') group by a1; -- non-range predicate for the MIN/MAX attribute explain select a1,a2,b,min(c),max(c) from t2 where (c > 'a000') and (c <= 'd999') and (c like '_8__') group by a1,a2,b; -- not all attributes are indexed by one index explain select a1, a2, b, c, min(d), max(d) from t1 group by a1,a2,b,c; -- other aggregate functions than MIN/MAX explain select a1,a2,count(a2) from t1 group by a1,a2,b; explain select a1,a2,count(a2) from t1 where (a1 > 'a') group by a1,a2,b; explain select sum(ord(a1)) from t1 where (a1 > 'a') group by a1,a2,b; # # Bug #16710: select distinct doesn't return all it should # explain select distinct(a1) from t1 where ord(a2) = 98; select distinct(a1) from t1 where ord(a2) = 98; # # BUG#11044: DISTINCT or GROUP BY queries with equality predicates instead of MIN/MAX. # explain select a1 from t1 where a2 = 'b' group by a1; select a1 from t1 where a2 = 'b' group by a1; explain select distinct a1 from t1 where a2 = 'b'; select distinct a1 from t1 where a2 = 'b'; # # Bug #12672: primary key implcitly included in every innodb index # --disable_warnings create table t4 ( pk_col int auto_increment primary key, a1 char(64), a2 char(64), b char(16), c char(16) not null, d char(16), dummy char(64) default ' ' ) engine=innodb; --enable_warnings insert into t4 (a1, a2, b, c, d, dummy) select * from t1; create index idx12672_0 on t4 (a1); create index idx12672_1 on t4 (a1,a2,b,c); create index idx12672_2 on t4 (a1,a2,b); analyze table t1; select distinct a1 from t4 where pk_col not in (1,2,3,4); drop table t1,t2,t3,t4; # # Bug #6142: a problem with the empty innodb table # --disable_warnings create table t1 ( a varchar(30), b varchar(30), primary key(a), key(b) ) engine=innodb; --enable_warnings select distinct a from t1; drop table t1; # # Bug #9798: group by with rollup # --disable_warnings create table t1(a int, key(a)) engine=innodb; --enable_warnings insert into t1 values(1); select a, count(a) from t1 group by a with rollup; drop table t1; # # Bug #13293 Wrongly used index results in endless loop. # create table t1 (f1 int, f2 char(1), primary key(f1,f2)) engine=innodb; insert into t1 values ( 1,"e"),(2,"a"),( 3,"c"),(4,"d"); alter table t1 drop primary key, add primary key (f2, f1); explain select distinct f1 a, f1 b from t1; explain select distinct f1, f2 from t1; drop table t1; # # Bug #14920 Ordering aggregated result sets with composite primary keys # corrupts resultset # create table t1 (c1 int not null,c2 int not null, primary key(c1,c2)); insert into t1 (c1,c2) values (10,1),(10,2),(10,3),(20,4),(20,5),(20,6),(30,7),(30,8),(30,9); select distinct c1, c2 from t1 order by c2; select c1,min(c2) as c2 from t1 group by c1 order by c2; select c1,c2 from t1 group by c1,c2 order by c2; drop table t1; # # Bug #16203: Analysis for possible min/max optimization erroneously # returns impossible range # CREATE TABLE t1 (a varchar(5), b int(11), PRIMARY KEY (a,b)); INSERT INTO t1 VALUES ('AA',1), ('AA',2), ('AA',3), ('BB',1), ('AA',4); OPTIMIZE TABLE t1; SELECT a FROM t1 WHERE a='AA' GROUP BY a; SELECT a FROM t1 WHERE a='BB' GROUP BY a; EXPLAIN SELECT a FROM t1 WHERE a='AA' GROUP BY a; EXPLAIN SELECT a FROM t1 WHERE a='BB' GROUP BY a; SELECT DISTINCT a FROM t1 WHERE a='BB'; SELECT DISTINCT a FROM t1 WHERE a LIKE 'B%'; SELECT a FROM t1 WHERE a LIKE 'B%' GROUP BY a; DROP TABLE t1; # # Bug #15102: select distinct returns empty result, select count # distinct > 0 (correct) # CREATE TABLE t1 ( a int(11) NOT NULL DEFAULT '0', b varchar(16) COLLATE latin1_general_ci NOT NULL DEFAULT '', PRIMARY KEY (a,b) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci; delimiter |; CREATE PROCEDURE a(x INT) BEGIN DECLARE rnd INT; DECLARE cnt INT; WHILE x > 0 DO SET rnd= x % 100; SET cnt = (SELECT COUNT(*) FROM t1 WHERE a = rnd); INSERT INTO t1(a,b) VALUES (rnd, CAST(cnt AS CHAR)); SET x= x - 1; END WHILE; END| DELIMITER ;| CALL a(1000); SELECT a FROM t1 WHERE a=0; SELECT DISTINCT a FROM t1 WHERE a=0; SELECT COUNT(DISTINCT a) FROM t1 WHERE a=0; DROP TABLE t1; DROP PROCEDURE a; # # Bug #18068: SELECT DISTINCT # CREATE TABLE t1 (a varchar(64) NOT NULL default '', PRIMARY KEY(a)); INSERT INTO t1 (a) VALUES (''), ('CENTRAL'), ('EASTERN'), ('GREATER LONDON'), ('NORTH CENTRAL'), ('NORTH EAST'), ('NORTH WEST'), ('SCOTLAND'), ('SOUTH EAST'), ('SOUTH WEST'), ('WESTERN'); EXPLAIN SELECT DISTINCT a,a FROM t1 ORDER BY a; SELECT DISTINCT a,a FROM t1 ORDER BY a; DROP TABLE t1;