# # 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 extended 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 extended 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 extended 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 extended 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 extended 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 extended 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 extended 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 extended 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 extended select a1,a2,count(a2) from t1 where (a1 > 'a') group by a1,a2,b; explain extended 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 # # Test case moved to group_min_max_innodb # # Bug #6142: a problem with the empty innodb table # # Test case moved to group_min_max_innodb # # Bug #9798: group by with rollup # # Test case moved to group_min_max_innodb # # Bug #13293 Wrongly used index results in endless loop. # # Test case moved to group_min_max_innodb drop table t1,t2,t3; # # 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; # # Bug #21007: NATURAL JOIN (any JOIN (2 x NATURAL JOIN)) crashes the server # CREATE TABLE t1 (id1 INT, id2 INT); CREATE TABLE t2 (id2 INT, id3 INT, id5 INT); CREATE TABLE t3 (id3 INT, id4 INT); CREATE TABLE t4 (id4 INT); CREATE TABLE t5 (id5 INT, id6 INT); CREATE TABLE t6 (id6 INT); INSERT INTO t1 VALUES(1,1); INSERT INTO t2 VALUES(1,1,1); INSERT INTO t3 VALUES(1,1); INSERT INTO t4 VALUES(1); INSERT INTO t5 VALUES(1,1); INSERT INTO t6 VALUES(1); # original bug query SELECT * FROM t1 NATURAL JOIN (t2 JOIN (t3 NATURAL JOIN t4, t5 NATURAL JOIN t6) ON (t3.id3 = t2.id3 AND t5.id5 = t2.id5)); # inner join swapped SELECT * FROM t1 NATURAL JOIN (((t3 NATURAL JOIN t4) join (t5 NATURAL JOIN t6) on t3.id4 = t5.id5) JOIN t2 ON (t3.id3 = t2.id3 AND t5.id5 = t2.id5)); # one join less, no ON cond SELECT * FROM t1 NATURAL JOIN ((t3 join (t5 NATURAL JOIN t6)) JOIN t2); # wrong error message: 'id2' - ambiguous column SELECT * FROM (t2 JOIN (t3 NATURAL JOIN t4, t5 NATURAL JOIN t6) ON (t3.id3 = t2.id3 AND t5.id5 = t2.id5)) NATURAL JOIN t1; SELECT * FROM (t2 JOIN ((t3 NATURAL JOIN t4) join (t5 NATURAL JOIN t6))) NATURAL JOIN t1; DROP TABLE t1,t2,t3,t4,t5,t6; # # Bug#22342: No results returned for query using max and group by # CREATE TABLE t1 (a int, b int, PRIMARY KEY (a,b), KEY b (b)); INSERT INTO t1 VALUES (1,1),(1,2),(1,0),(1,3); explain SELECT MAX(b), a FROM t1 WHERE b < 2 AND a = 1 GROUP BY a; SELECT MAX(b), a FROM t1 WHERE b < 2 AND a = 1 GROUP BY a; SELECT MIN(b), a FROM t1 WHERE b > 1 AND a = 1 GROUP BY a; CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a,b,c)); INSERT INTO t2 SELECT a,b,b FROM t1; explain SELECT MIN(c) FROM t2 WHERE b = 2 and a = 1 and c > 1 GROUP BY a; SELECT MIN(c) FROM t2 WHERE b = 2 and a = 1 and c > 1 GROUP BY a; DROP TABLE t1,t2; # # Bug#24156: Loose index scan not used with CREATE TABLE ...SELECT and similar statements # CREATE TABLE t1 (a INT, b INT, INDEX (a,b)); INSERT INTO t1 (a, b) VALUES (1,1), (1,2), (1,3), (1,4), (1,5), (2,2), (2,3), (2,1), (3,1), (4,1), (4,2), (4,3), (4,4), (4,5), (4,6); EXPLAIN SELECT max(b), a FROM t1 GROUP BY a; FLUSH STATUS; SELECT max(b), a FROM t1 GROUP BY a; SHOW STATUS LIKE 'handler_read__e%'; EXPLAIN SELECT max(b), a FROM t1 GROUP BY a; FLUSH STATUS; CREATE TABLE t2 SELECT max(b), a FROM t1 GROUP BY a; SHOW STATUS LIKE 'handler_read__e%'; FLUSH STATUS; SELECT * FROM (SELECT max(b), a FROM t1 GROUP BY a) b; SHOW STATUS LIKE 'handler_read__e%'; FLUSH STATUS; (SELECT max(b), a FROM t1 GROUP BY a) UNION (SELECT max(b), a FROM t1 GROUP BY a); SHOW STATUS LIKE 'handler_read__e%'; EXPLAIN (SELECT max(b), a FROM t1 GROUP BY a) UNION (SELECT max(b), a FROM t1 GROUP BY a); EXPLAIN SELECT (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2) x FROM t1 AS t1_outer; EXPLAIN SELECT 1 FROM t1 AS t1_outer WHERE EXISTS (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2); EXPLAIN SELECT 1 FROM t1 AS t1_outer WHERE (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2) > 12; EXPLAIN SELECT 1 FROM t1 AS t1_outer WHERE a IN (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2); EXPLAIN SELECT 1 FROM t1 AS t1_outer GROUP BY a HAVING a > (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2); EXPLAIN SELECT 1 FROM t1 AS t1_outer1 JOIN t1 AS t1_outer2 ON t1_outer1.a = (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2) AND t1_outer1.b = t1_outer2.b; EXPLAIN SELECT (SELECT (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2) x FROM t1 AS t1_outer) x2 FROM t1 AS t1_outer2; CREATE TABLE t3 LIKE t1; FLUSH STATUS; INSERT INTO t3 SELECT a,MAX(b) FROM t1 GROUP BY a; SHOW STATUS LIKE 'handler_read__e%'; DELETE FROM t3; FLUSH STATUS; INSERT INTO t3 SELECT 1, (SELECT MAX(b) FROM t1 GROUP BY a HAVING a < 2) FROM t1 LIMIT 1; SHOW STATUS LIKE 'handler_read__e%'; FLUSH STATUS; DELETE FROM t3 WHERE (SELECT MAX(b) FROM t1 GROUP BY a HAVING a < 2) > 10000; SHOW STATUS LIKE 'handler_read__e%'; FLUSH STATUS; --error ER_SUBQUERY_NO_1_ROW DELETE FROM t3 WHERE (SELECT (SELECT MAX(b) FROM t1 GROUP BY a HAVING a < 2) x FROM t1) > 10000; SHOW STATUS LIKE 'handler_read__e%'; DROP TABLE t1,t2,t3; # # Bug#25602: queries with DISTINCT and SQL_BIG_RESULT hint # for which loose scan optimization is applied # CREATE TABLE t1 (a int, INDEX idx(a)); INSERT INTO t1 VALUES (4), (2), (1), (2), (4), (2), (1), (4), (4), (2), (1), (2), (2), (4), (1), (4); EXPLAIN SELECT DISTINCT(a) FROM t1; SELECT DISTINCT(a) FROM t1; EXPLAIN SELECT SQL_BIG_RESULT DISTINCT(a) FROM t1; SELECT SQL_BIG_RESULT DISTINCT(a) FROM t1; DROP TABLE t1; # # Bug #32268: Indexed queries give bogus MIN and MAX results # CREATE TABLE t1 (a INT, b INT); INSERT INTO t1 (a, b) VALUES (1,1), (1,2), (1,3); INSERT INTO t1 SELECT a + 1, b FROM t1; INSERT INTO t1 SELECT a + 2, b FROM t1; EXPLAIN SELECT a, MIN(b), MAX(b) FROM t1 GROUP BY a ORDER BY a DESC; SELECT a, MIN(b), MAX(b) FROM t1 GROUP BY a ORDER BY a DESC; CREATE INDEX break_it ON t1 (a, b); EXPLAIN SELECT a, MIN(b), MAX(b) FROM t1 GROUP BY a ORDER BY a; SELECT a, MIN(b), MAX(b) FROM t1 GROUP BY a ORDER BY a; EXPLAIN SELECT a, MIN(b), MAX(b) FROM t1 GROUP BY a ORDER BY a DESC; SELECT a, MIN(b), MAX(b) FROM t1 GROUP BY a ORDER BY a DESC; EXPLAIN SELECT a, MIN(b), MAX(b), AVG(b) FROM t1 GROUP BY a ORDER BY a DESC; SELECT a, MIN(b), MAX(b), AVG(b) FROM t1 GROUP BY a ORDER BY a DESC; DROP TABLE t1; # # Bug#38195: Incorrect handling of aggregate functions when loose index scan is # used causes server crash. # create table t1 (a int, b int, primary key (a,b), key `index` (a,b)) engine=MyISAM; insert into t1 (a,b) values (0,0),(0,1),(0,2),(0,3),(0,4),(0,5),(0,6), (0,7),(0,8),(0,9),(0,10),(0,11),(0,12),(0,13), (1,0),(1,1),(1,2),(1,3),(1,4),(1,5),(1,6), (1,7),(1,8),(1,9),(1,10),(1,11),(1,12),(1,13), (2,0),(2,1),(2,2),(2,3),(2,4),(2,5),(2,6), (2,7),(2,8),(2,9),(2,10),(2,11),(2,12),(2,13), (3,0),(3,1),(3,2),(3,3),(3,4),(3,5),(3,6), (3,7),(3,8),(3,9),(3,10),(3,11),(3,12),(3,13); insert into t1 (a,b) select a, max(b)+1 from t1 where a = 0 group by a; select * from t1; explain extended select sql_buffer_result a, max(b)+1 from t1 where a = 0 group by a; drop table t1; # # Bug #41610: key_infix_len can be overwritten causing some group by queries # to return no rows # CREATE TABLE t1 (a int, b int, c int, d int, KEY foo (c,d,a,b), KEY bar (c,a,b,d)); INSERT INTO t1 VALUES (1, 1, 1, 1), (1, 1, 1, 2), (1, 1, 1, 3), (1, 1, 1, 4); INSERT INTO t1 SELECT * FROM t1; INSERT INTO t1 SELECT * FROM t1; INSERT INTO t1 SELECT a,b,c+1,d FROM t1; #Should be non-empty EXPLAIN SELECT DISTINCT c FROM t1 WHERE d=4; SELECT DISTINCT c FROM t1 WHERE d=4; DROP TABLE t1; --echo # --echo # Bug #45386: Wrong query result with MIN function in field list, --echo # WHERE and GROUP BY clause --echo # CREATE TABLE t (a INT, b INT, INDEX (a,b)); INSERT INTO t VALUES (2,0), (2,0), (2,1), (2,1); INSERT INTO t SELECT * FROM t; --echo # test MIN --echo #should use range with index for group by EXPLAIN SELECT a, MIN(b) FROM t WHERE b <> 0 GROUP BY a; --echo #should return 1 row SELECT a, MIN(b) FROM t WHERE b <> 0 GROUP BY a; --echo # test MAX --echo #should use range with index for group by EXPLAIN SELECT a, MAX(b) FROM t WHERE b <> 1 GROUP BY a; --echo #should return 1 row SELECT a, MAX(b) FROM t WHERE b <> 1 GROUP BY a; --echo # test 3 ranges and use the middle one INSERT INTO t SELECT a, 2 FROM t; --echo #should use range with index for group by EXPLAIN SELECT a, MAX(b) FROM t WHERE b > 0 AND b < 2 GROUP BY a; --echo #should return 1 row SELECT a, MAX(b) FROM t WHERE b > 0 AND b < 2 GROUP BY a; DROP TABLE t; --echo # --echo # Bug #48472: Loose index scan inappropriately chosen for some WHERE --echo # conditions --echo # CREATE TABLE t (a INT, b INT, INDEX (a,b)); INSERT INTO t VALUES (2,0), (2,0), (2,1), (2,1); INSERT INTO t SELECT * FROM t; SELECT a, MAX(b) FROM t WHERE 0=b+0 GROUP BY a; DROP TABLE t; --echo End of 5.0 tests --echo # --echo # Bug #46607: Assertion failed: (cond_type == Item::FUNC_ITEM) results in --echo # server crash --echo # CREATE TABLE t (a INT, b INT, INDEX (a,b)); INSERT INTO t VALUES (2,0), (2,0), (2,1), (2,1); INSERT INTO t SELECT * FROM t; SELECT a, MAX(b) FROM t WHERE b GROUP BY a; DROP TABLE t; # # BUG#49902 - SELECT returns incorrect results # CREATE TABLE t1(a INT NOT NULL, b INT NOT NULL, KEY (b)); INSERT INTO t1 VALUES(1,1),(2,1); ANALYZE TABLE t1; SELECT 1 AS c, b FROM t1 WHERE b IN (1,2) GROUP BY c, b; SELECT a FROM t1 WHERE b=1; DROP TABLE t1; --echo # --echo # Bug#47762: Incorrect result from MIN() when WHERE tests NOT NULL column --echo # for NULL --echo # --echo ## Test for NULLs allowed CREATE TABLE t1 ( a INT, KEY (a) ); INSERT INTO t1 VALUES (1), (2), (3); --source include/min_null_cond.inc INSERT INTO t1 VALUES (NULL), (NULL); --source include/min_null_cond.inc DROP TABLE t1; --echo ## Test for NOT NULLs CREATE TABLE t1 ( a INT NOT NULL PRIMARY KEY); INSERT INTO t1 VALUES (1), (2), (3); --echo # --echo # NULL-safe operator test disabled for non-NULL indexed columns. --echo # --echo # See bugs --echo # --echo # - Bug#52173: Reading NULL value from non-NULL index gives --echo # wrong result in embedded server --echo # --echo # - Bug#52174: Sometimes wrong plan when reading a MAX value from --echo # non-NULL index --echo # --let $skip_null_safe_test= 1 --source include/min_null_cond.inc DROP TABLE t1; --echo # --echo # Bug#53859: Valgrind: opt_sum_query(TABLE_LIST*, List&, Item*) at --echo # opt_sum.cc:305 --echo # CREATE TABLE t1 ( a INT, KEY (a) ); INSERT INTO t1 VALUES (1), (2), (3); SELECT MIN( a ) AS min_a FROM t1 WHERE a > 1 AND a IS NULL ORDER BY min_a; DROP TABLE t1; --echo End of 5.1 tests