diff options
Diffstat (limited to 'mysql-test/main/group_min_max.test')
| -rw-r--r-- | mysql-test/main/group_min_max.test | 1613 |
1 files changed, 1613 insertions, 0 deletions
diff --git a/mysql-test/main/group_min_max.test b/mysql-test/main/group_min_max.test new file mode 100644 index 00000000000..b0bc42d7f8c --- /dev/null +++ b/mysql-test/main/group_min_max.test @@ -0,0 +1,1613 @@ +# +# 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(248) 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(248) 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; + +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; + +select a1,a2,b,min(c),max(c) from t1 +where exists ( select * from t2 where t2.c > 'b1' ) +group by a1,a2,b; + +# correlated subselect that doesn't reference the min/max argument +explain select a1,a2,b,c,min(c), max(c) from t1 +where exists ( select * from t2 where t1.b > 'a' and t2.c > 'b1' ) +group by a1,a2,b; + +select a1,a2,b,c,min(c), max(c) from t1 +where exists ( select * from t2 where t1.b > 'a' and t2.c > 'b1' ) +group by a1,a2,b; + +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='semijoin_with_cache=off'; +explain select a1,a2,b,c,min(c), max(c) from t1 +where exists ( select * from t2 + where t2.c in (select c from t3 where t3.c > t1.b) and + t2.c > 'b1' ) +group by a1,a2,b; + +select a1,a2,b,c,min(c), max(c) from t1 +where exists ( select * from t2 + where t2.c in (select c from t3 where t3.c > t1.b) and + t2.c > 'b1' ) +group by a1,a2,b; +SET optimizer_switch=@save_optimizer_switch; + +# correlated subselect that references the min/max argument +explain select a1,a2,b,c,min(c), max(c) from t1 +where exists ( select * from t2 where t1.c > 'a' and t2.c > 'b1' ) +group by a1,a2,b; + +select a1,a2,b,c,min(c), max(c) from t1 +where exists ( select * from t2 where t1.c > 'a' and t2.c > 'b1' ) +group by a1,a2,b; + +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='semijoin_with_cache=off'; +explain select a1,a2,b,c,min(c), max(c) from t1 +where exists ( select * from t2 + where t2.c in (select c from t3 where t3.c > t1.c) and + t2.c > 'b1' ) +group by a1,a2,b; + +select a1,a2,b,c,min(c), max(c) from t1 +where exists ( select * from t2 + where t2.c in (select c from t3 where t3.c > t1.c) and + t2.c > 'b1' ) +group by a1,a2,b; +SET optimizer_switch=@save_optimizer_switch; + + +# 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 98 + 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 98 + 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; + +# +# MDEV-4120 UNIQUE indexes should not be considered for loose index scan +# + +create table t4 as select distinct a1, a2, b, c from t1; +alter table t4 add unique index idxt4 (a1, a2, b, c); + +--echo # This is "superceded" by MDEV-7118, and Loose Index Scan is again an option: +explain +select a1, a2, b, min(c) from t4 group by a1, a2, b; +select a1, a2, b, min(c) from t4 group by a1, a2, b; + +drop table t4; + +# +# 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 '', 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, 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, 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; +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>&, 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; + +# +# MDEV-729 lp:998028 - Server crashes on normal shutdown in closefrm after executing a query from MyISAM table +# +create table t1 (a int, b varchar(1), key(b,a)) engine=myisam; +insert t1 values (1,'a'),(2,'b'),(3,'c'),(4,'d'),(5,'e'),(6,'f'),(7,'g'),(8,'h'),(null,'i'); +select min(a), b from t1 where a=7 or b='z' group by b; +flush tables; +drop table t1; + +--echo # +--echo # LP BUG#888456 Wrong result with DISTINCT , ANY , subquery_cache=off , NOT NULL +--echo # + +CREATE TABLE t1 ( a int NOT NULL) ; +INSERT INTO t1 VALUES (28),(29),(9); + +CREATE TABLE t2 ( a int, KEY (a)) ; +INSERT INTO t2 VALUES (1),(1),(1),(4),(4),(5),(5),(8),(8),(9); + +explain select (select t2.a from t2 where t2.a >= t1.a group by t2.a) from t1; +select (select t2.a from t2 where t2.a >= t1.a group by t2.a) from t1; + +drop table t1, t2; + +--echo # +--echo # LP BUG#900375 Wrong result with derived_merge=ON, DISTINCT or GROUP BY, EXISTS +--echo # + +CREATE TABLE t1 ( a INT, b INT, KEY (b) ); +INSERT INTO t1 VALUES +(100,10),(101,11),(102,12),(103,13),(104,14), +(105,15),(106,16),(107,17),(108,18),(109,19); + +EXPLAIN +SELECT alias1.* FROM t1, (SELECT * FROM t1) AS alias1 +WHERE EXISTS ( SELECT DISTINCT b FROM t1 WHERE b <= alias1.a ) ; +SELECT alias1.* FROM t1, (SELECT * FROM t1) AS alias1 +WHERE EXISTS ( SELECT DISTINCT b FROM t1 WHERE b <= alias1.a ) ; + +EXPLAIN +SELECT alias1.* FROM t1, t1 AS alias1 +WHERE EXISTS ( SELECT DISTINCT b FROM t1 WHERE b <= alias1.a ) ; +SELECT alias1.* FROM t1, t1 AS alias1 +WHERE EXISTS ( SELECT DISTINCT b FROM t1 WHERE b <= alias1.a ) ; + +drop table t1; + +--echo End of 5.1 tests + +--echo # +--echo # MDEV-765 lp:825075 - Wrong result with GROUP BY + multipart key + MIN/MAX loose scan +--echo # + +CREATE TABLE t1 (a varchar(1), b varchar(1), KEY (b,a)); +INSERT INTO t1 VALUES +('0',NULL),('9',NULL),('8','c'),('4','d'),('7','d'),(NULL,'f'), +('7','f'),('8','g'),(NULL,'j'); + +explain +SELECT max(a) , b FROM t1 WHERE a IS NULL OR b = 'z' GROUP BY b; +SELECT max(a) , b FROM t1 WHERE a IS NULL OR b = 'z' GROUP BY b; + +explain +SELECT b, min(a) FROM t1 WHERE a = '7' OR b = 'z' GROUP BY b; +SELECT b, min(a) FROM t1 WHERE a = '7' OR b = 'z' GROUP BY b; + +explain +SELECT b, min(a) FROM t1 WHERE (a = b OR b = 'd' OR b is NULL) GROUP BY b; +SELECT b, min(a) FROM t1 WHERE (a = b OR b = 'd' OR b is NULL) GROUP BY b; + +explain +SELECT b, min(a) FROM t1 WHERE a > ('0' = b) AND b = 'z' GROUP BY b; +SELECT b, min(a) FROM t1 WHERE a > ('0' = b) AND b = 'z' GROUP BY b; + +explain +SELECT b, min(a) FROM t1 WHERE a > '0' AND (b < (a = '7')) GROUP BY b; +SELECT b, min(a) FROM t1 WHERE a > '0' AND (b < (a = '7')) GROUP BY b; + +explain +SELECT b, min(a) FROM t1 WHERE (a > '0' AND (a > '1' OR b = 'd')) GROUP BY b; +SELECT b, min(a) FROM t1 WHERE (a > '0' AND (a > '1' OR b = 'd')) GROUP BY b; + +drop table t1; + +--echo # +--echo # MDEV-4140 Wrong result with GROUP BY + multipart key + MIN/MAX loose scan and a subquery +--echo # + +CREATE TABLE t1 (a int, b int, KEY (b, a)) ; +INSERT INTO t1 VALUES (0,99),(9,99),(4,0),(7,0),(99,0),(7,0),(8,0),(99,0),(1,0); +INSERT INTO t1 VALUES (0,99),(9,99),(4,0),(7,0),(99,0),(7,0),(8,0),(99,0),(1,0); +CREATE TABLE t2 (c int) ; +INSERT INTO t2 VALUES (0),(1); + +EXPLAIN +SELECT MIN(a), b FROM t1 WHERE a > 0 GROUP BY b; +SELECT MIN(a), b FROM t1 WHERE a > 0 GROUP BY b; +EXPLAIN +SELECT MIN(a), b FROM t1 WHERE a > ( SELECT c FROM t2 WHERE c = 0 ) GROUP BY b; +SELECT MIN(a), b FROM t1 WHERE a > ( SELECT c FROM t2 WHERE c = 0 ) GROUP BY b; +# this test is for 5.5 to ensure that the subquery is expensive +EXPLAIN +SELECT MIN(a), b FROM t1 WHERE a > ( SELECT min(c) FROM t2, t1 t1a, t1 t1b WHERE c = 0 ) GROUP BY b; +SELECT MIN(a), b FROM t1 WHERE a > ( SELECT min(c) FROM t2, t1 t1a, t1 t1b WHERE c = 0 ) GROUP BY b; + +drop table t1, t2; + +--echo End of 5.3 tests + +--echo # +--echo # WL#3220 (Loose index scan for COUNT DISTINCT) +--echo # + +CREATE TABLE t1 (a INT, b INT, c INT, KEY (a,b)); +INSERT INTO t1 VALUES (1,1,1), (1,2,1), (1,3,1), (1,4,1); +INSERT INTO t1 SELECT a, b + 4, 1 FROM t1; +INSERT INTO t1 SELECT a + 1, b, 1 FROM t1; +CREATE TABLE t2 (a INT, b INT, c INT, d INT, e INT, f INT, KEY (a,b,c)); +INSERT INTO t2 VALUES (1,1,1,1,1,1), (1,2,1,1,1,1), (1,3,1,1,1,1), + (1,4,1,1,1,1); +INSERT INTO t2 SELECT a, b + 4, c,d,e,f FROM t2; +INSERT INTO t2 SELECT a + 1, b, c,d,e,f FROM t2; + +EXPLAIN SELECT COUNT(DISTINCT a) FROM t1; +SELECT COUNT(DISTINCT a) FROM t1; + +EXPLAIN SELECT COUNT(DISTINCT a,b) FROM t1; +SELECT COUNT(DISTINCT a,b) FROM t1; + +EXPLAIN SELECT COUNT(DISTINCT b,a) FROM t1; +SELECT COUNT(DISTINCT b,a) FROM t1; + +EXPLAIN SELECT COUNT(DISTINCT b) FROM t1; +SELECT COUNT(DISTINCT b) FROM t1; + +EXPLAIN SELECT COUNT(DISTINCT a) FROM t1 GROUP BY a; +SELECT COUNT(DISTINCT a) FROM t1 GROUP BY a; + +EXPLAIN SELECT COUNT(DISTINCT b) FROM t1 GROUP BY a; +SELECT COUNT(DISTINCT b) FROM t1 GROUP BY a; + +EXPLAIN SELECT COUNT(DISTINCT a) FROM t1 GROUP BY b; +SELECT COUNT(DISTINCT a) FROM t1 GROUP BY b; + +EXPLAIN SELECT DISTINCT COUNT(DISTINCT a) FROM t1; +SELECT DISTINCT COUNT(DISTINCT a) FROM t1; + +EXPLAIN SELECT COUNT(DISTINCT a, b + 0) FROM t1; +SELECT COUNT(DISTINCT a, b + 0) FROM t1; + +EXPLAIN SELECT COUNT(DISTINCT a) FROM t1 HAVING COUNT(DISTINCT b) < 10; +SELECT COUNT(DISTINCT a) FROM t1 HAVING COUNT(DISTINCT b) < 10; + +EXPLAIN SELECT COUNT(DISTINCT a) FROM t1 HAVING COUNT(DISTINCT c) < 10; +SELECT COUNT(DISTINCT a) FROM t1 HAVING COUNT(DISTINCT c) < 10; + +EXPLAIN SELECT 1 FROM t1 HAVING COUNT(DISTINCT a) < 10; +SELECT 1 FROM t1 HAVING COUNT(DISTINCT a) < 10; + +EXPLAIN SELECT 1 FROM t1 GROUP BY a HAVING COUNT(DISTINCT b) > 1; +SELECT 1 FROM t1 GROUP BY a HAVING COUNT(DISTINCT b) > 1; + +EXPLAIN SELECT COUNT(DISTINCT t1_1.a) FROM t1 t1_1, t1 t1_2 GROUP BY t1_1.a; +SELECT COUNT(DISTINCT t1_1.a) FROM t1 t1_1, t1 t1_2 GROUP BY t1_1.a; + +EXPLAIN SELECT COUNT(DISTINCT a), 12 FROM t1; +SELECT COUNT(DISTINCT a), 12 FROM t1; + +EXPLAIN SELECT COUNT(DISTINCT a, b, c) FROM t2; +SELECT COUNT(DISTINCT a, b, c) FROM t2; + +EXPLAIN SELECT COUNT(DISTINCT a), SUM(DISTINCT a), AVG(DISTINCT a) FROM t2; +SELECT COUNT(DISTINCT a), SUM(DISTINCT a), AVG(DISTINCT a) FROM t2; + +EXPLAIN SELECT COUNT(DISTINCT a), SUM(DISTINCT a), AVG(DISTINCT f) FROM t2; +SELECT COUNT(DISTINCT a), SUM(DISTINCT a), AVG(DISTINCT f) FROM t2; + +EXPLAIN SELECT COUNT(DISTINCT a, b), COUNT(DISTINCT b, a) FROM t2; +SELECT COUNT(DISTINCT a, b), COUNT(DISTINCT b, a) FROM t2; + +EXPLAIN SELECT COUNT(DISTINCT a, b), COUNT(DISTINCT b, f) FROM t2; +SELECT COUNT(DISTINCT a, b), COUNT(DISTINCT b, f) FROM t2; + +EXPLAIN SELECT COUNT(DISTINCT a, b), COUNT(DISTINCT b, d) FROM t2; +SELECT COUNT(DISTINCT a, b), COUNT(DISTINCT b, d) FROM t2; + +EXPLAIN SELECT a, c, COUNT(DISTINCT c, a, b) FROM t2 GROUP BY a, b, c; +SELECT a, c, COUNT(DISTINCT c, a, b) FROM t2 GROUP BY a, b, c; + +EXPLAIN SELECT COUNT(DISTINCT c, a, b) FROM t2 + WHERE a > 5 AND b BETWEEN 10 AND 20 GROUP BY a, b, c; +SELECT COUNT(DISTINCT c, a, b) FROM t2 + WHERE a > 5 AND b BETWEEN 10 AND 20 GROUP BY a, b, c; + +EXPLAIN SELECT COUNT(DISTINCT b), SUM(DISTINCT b) FROM t2 WHERE a = 5 + GROUP BY b; +SELECT COUNT(DISTINCT b), SUM(DISTINCT b) FROM t2 WHERE a = 5 + GROUP BY b; + +EXPLAIN SELECT a, COUNT(DISTINCT b), SUM(DISTINCT b) FROM t2 GROUP BY a; +SELECT a, COUNT(DISTINCT b), SUM(DISTINCT b) FROM t2 GROUP BY a; + +EXPLAIN SELECT COUNT(DISTINCT b), SUM(DISTINCT b) FROM t2 GROUP BY a; +SELECT COUNT(DISTINCT b), SUM(DISTINCT b) FROM t2 GROUP BY a; + +EXPLAIN SELECT COUNT(DISTINCT a, b) FROM t2 WHERE c = 13 AND d = 42; +SELECT COUNT(DISTINCT a, b) FROM t2 WHERE c = 13 AND d = 42; + +EXPLAIN SELECT a, COUNT(DISTINCT a), SUM(DISTINCT a) FROM t2 + WHERE b = 13 AND c = 42 GROUP BY a; +SELECT a, COUNT(DISTINCT a), SUM(DISTINCT a) FROM t2 + WHERE b = 13 AND c = 42 GROUP BY a; + +# This query could have been resolved using loose index scan since the second +# part of count(..) is defined by a constant predicate +EXPLAIN SELECT COUNT(DISTINCT a, b), SUM(DISTINCT a) FROM t2 WHERE b = 42; +SELECT COUNT(DISTINCT a, b), SUM(DISTINCT a) FROM t2 WHERE b = 42; + +EXPLAIN SELECT SUM(DISTINCT a), MAX(b) FROM t2 GROUP BY a; +SELECT SUM(DISTINCT a), MAX(b) FROM t2 GROUP BY a; + +EXPLAIN SELECT 42 * (a + c + COUNT(DISTINCT c, a, b)) FROM t2 GROUP BY a, b, c; +SELECT 42 * (a + c + COUNT(DISTINCT c, a, b)) FROM t2 GROUP BY a, b, c; + +EXPLAIN SELECT (SUM(DISTINCT a) + MAX(b)) FROM t2 GROUP BY a; +SELECT (SUM(DISTINCT a) + MAX(b)) FROM t2 GROUP BY a; + +DROP TABLE t1,t2; + +--echo # end of WL#3220 tests + +--echo # +--echo # Bug#50539: Wrong result when loose index scan is used for an aggregate +--echo # function with distinct +--echo # +CREATE TABLE t1 ( + f1 int(11) NOT NULL DEFAULT '0', + f2 char(1) NOT NULL DEFAULT '', + KEY (f1,f2) +) ; +insert into t1 values(1,'A'),(1 , 'B'), (1, 'C'), (2, 'A'), +(3, 'A'), (3, 'B'), (3, 'C'), (3, 'D'); + +SELECT f1, COUNT(DISTINCT f2) FROM t1 GROUP BY f1; +explain SELECT f1, COUNT(DISTINCT f2) FROM t1 GROUP BY f1; + +drop table t1; +--echo # End of test#50539. + +--echo # +--echo # Bug#17217128 - BAD INTERACTION BETWEEN MIN/MAX AND +--echo # "HAVING SUM(DISTINCT)": WRONG RESULTS. +--echo # + +CREATE TABLE t (a INT, b INT, KEY(a,b)); +INSERT INTO t VALUES (1,1), (2,2), (3,3), (4,4), (1,0), (3,2), (4,5); +ANALYZE TABLE t; + +SELECT a, SUM(DISTINCT a), MIN(b) FROM t GROUP BY a; +EXPLAIN SELECT a, SUM(DISTINCT a), MIN(b) FROM t GROUP BY a; + +SELECT a, SUM(DISTINCT a), MAX(b) FROM t GROUP BY a; +EXPLAIN SELECT a, SUM(DISTINCT a), MAX(b) FROM t GROUP BY a; + +SELECT a, MAX(b) FROM t GROUP BY a HAVING SUM(DISTINCT a); +EXPLAIN SELECT a, MAX(b) FROM t GROUP BY a HAVING SUM(DISTINCT a); + +SELECT SUM(DISTINCT a), MIN(b), MAX(b) FROM t; +EXPLAIN SELECT SUM(DISTINCT a), MIN(b), MAX(b) FROM t; + +SELECT a, SUM(DISTINCT a), MIN(b), MAX(b) FROM t GROUP BY a; +EXPLAIN SELECT a, SUM(DISTINCT a), MIN(b), MAX(b) FROM t GROUP BY a; +DROP TABLE t; + +--echo # +--echo # MDEV-4219 A simple select query returns random data (upstream bug#68473) +--echo # + +--disable_warnings +drop table if exists faulty; +--enable_warnings + +# MySQL's test case + +CREATE TABLE faulty ( +a int(11) unsigned NOT NULL AUTO_INCREMENT, +b int(11) unsigned NOT NULL, +c datetime NOT NULL, +PRIMARY KEY (a), +UNIQUE KEY b_and_c (b,c) +); + +INSERT INTO faulty (b, c) VALUES +(1801, '2013-02-15 09:00:00'), +(1802, '2013-02-28 09:00:00'), +(1802, '2013-03-01 09:00:00'), +(5, '1990-02-15 09:00:00'), +(5, '2013-02-15 09:00:00'), +(5, '2009-02-15 17:00:00'); + +EXPLAIN +SELECT DISTINCT b, c FROM faulty WHERE b='1802' ORDER BY c; +SELECT DISTINCT b, c FROM faulty WHERE b='1802' ORDER BY c; + +drop table faulty; + +# MariaDB test case + +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; + +CREATE INDEX break_it ON t1 (a, b); + +EXPLAIN +SELECT distinct a, b FROM t1 where a = '3' ORDER BY b; +SELECT distinct a, b FROM t1 where a = '3' ORDER BY b; + +drop table t1; + +--echo # +--echo # Start of 10.0 tests +--echo # + +--echo # +--echo # MDEV-6991 GROUP_MIN_MAX optimization is erroneously applied in some cases +--echo # +CREATE TABLE t1 (id INT NOT NULL, a VARCHAR(20)) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1,'2001-01-01'); +INSERT INTO t1 VALUES (1,'2001-01-02'); +INSERT INTO t1 VALUES (1,'2001-01-03'); +INSERT INTO t1 VALUES (1,' 2001-01-04'); +INSERT INTO t1 VALUES (2,'2001-01-01'); +INSERT INTO t1 VALUES (2,'2001-01-02'); +INSERT INTO t1 VALUES (2,'2001-01-03'); +INSERT INTO t1 VALUES (2,' 2001-01-04'); +INSERT INTO t1 VALUES (3,'2001-01-01'); +INSERT INTO t1 VALUES (3,'2001-01-02'); +INSERT INTO t1 VALUES (3,'2001-01-03'); +INSERT INTO t1 VALUES (3,' 2001-01-04'); +INSERT INTO t1 VALUES (4,'2001-01-01'); +INSERT INTO t1 VALUES (4,'2001-01-02'); +INSERT INTO t1 VALUES (4,'2001-01-03'); +INSERT INTO t1 VALUES (4,' 2001-01-04'); +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=DATE'2001-01-04' GROUP BY id; +ALTER TABLE t1 ADD KEY(id,a); +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=DATE'2001-01-04' GROUP BY id; +DROP TABLE t1; + + +--echo # +--echo # End of 10.0 tests +--echo # + + +--echo # +--echo # Start of 10.1 tests +--echo # + +--echo # +--echo # MDEV-6990 GROUP_MIN_MAX optimization is not applied in some cases when it could +--echo # +CREATE TABLE t1 (id INT NOT NULL, a DATE, KEY(id,a)) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1,'2001-01-01'); +INSERT INTO t1 VALUES (1,'2001-01-02'); +INSERT INTO t1 VALUES (1,'2001-01-03'); +INSERT INTO t1 VALUES (1,'2001-01-04'); +INSERT INTO t1 VALUES (2,'2001-01-01'); +INSERT INTO t1 VALUES (2,'2001-01-02'); +INSERT INTO t1 VALUES (2,'2001-01-03'); +INSERT INTO t1 VALUES (2,'2001-01-04'); +INSERT INTO t1 VALUES (3,'2001-01-01'); +INSERT INTO t1 VALUES (3,'2001-01-02'); +INSERT INTO t1 VALUES (3,'2001-01-03'); +INSERT INTO t1 VALUES (3,'2001-01-04'); +INSERT INTO t1 VALUES (4,'2001-01-01'); +INSERT INTO t1 VALUES (4,'2001-01-02'); +INSERT INTO t1 VALUES (4,'2001-01-03'); +INSERT INTO t1 VALUES (4,'2001-01-04'); +EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>='2001-01-04' GROUP BY id; +EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=20010104.0 GROUP BY id; +EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=20010104e0 GROUP BY id; +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>='2001-01-04' GROUP BY id; +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=20010104.0 GROUP BY id; +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=20010104e0 GROUP BY id; +DROP TABLE t1; + +--echo # +--echo # MDEV-8229 GROUP_MIN_MAX is erroneously applied for BETWEEN in some cases +--echo # +SET NAMES latin1; +CREATE TABLE t1 (id INT NOT NULL, a VARCHAR(20)) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1,'2001-01-01'); +INSERT INTO t1 VALUES (1,'2001-01-02'); +INSERT INTO t1 VALUES (1,'2001-01-03'); +INSERT INTO t1 VALUES (1,' 2001-01-04'); +INSERT INTO t1 VALUES (2,'2001-01-01'); +INSERT INTO t1 VALUES (2,'2001-01-02'); +INSERT INTO t1 VALUES (2,'2001-01-03'); +INSERT INTO t1 VALUES (2,' 2001-01-04'); +INSERT INTO t1 VALUES (3,'2001-01-01'); +INSERT INTO t1 VALUES (3,'2001-01-02'); +INSERT INTO t1 VALUES (3,'2001-01-03'); +INSERT INTO t1 VALUES (3,' 2001-01-04'); +INSERT INTO t1 VALUES (4,'2001-01-01'); +INSERT INTO t1 VALUES (4,'2001-01-02'); +INSERT INTO t1 VALUES (4,'2001-01-03'); +INSERT INTO t1 VALUES (4,' 2001-01-04'); +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN ' 2001-01-04' AND '2001-01-05' GROUP BY id; +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN '2001-01-04' AND '2001-01-05' GROUP BY id; +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN DATE'2001-01-04' AND DATE'2001-01-05' GROUP BY id; +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN DATE'2001-01-04' AND '2001-01-05' GROUP BY id; +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN '2001-01-04' AND DATE'2001-01-05' GROUP BY id; +ALTER TABLE t1 ADD KEY(id,a); +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN ' 2001-01-04' AND '2001-01-05' GROUP BY id; +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN '2001-01-04' AND '2001-01-05' GROUP BY id; +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN DATE'2001-01-04' AND DATE'2001-01-05' GROUP BY id; +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN DATE'2001-01-04' AND '2001-01-05' GROUP BY id; +SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN '2001-01-04' AND DATE'2001-01-05' GROUP BY id; +EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN ' 2001-01-04' AND '2001-01-05' GROUP BY id; +EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN '2001-01-04' AND '2001-01-05' GROUP BY id; +EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN DATE'2001-01-04' AND DATE'2001-01-05' GROUP BY id; +EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN DATE'2001-01-04' AND '2001-01-05' GROUP BY id; +EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN '2001-01-04' AND DATE'2001-01-05' GROUP BY id; +DROP TABLE t1; + +--echo # +--echo # MIN() optimization didn't work correctly with BETWEEN when using too +--echo # long strings. +--echo # + +create table t1 (a varchar(10), key (a)) engine=myisam; +insert into t1 values("bar"),("Cafe"); +explain select min(a) from t1 where a between "a" and "Cafe2"; +explain select min(a) from t1 where a between "a" and "Cafeeeeeeeeeeeeeeeeeeeeeeeeee"; +explain select min(a) from t1 where a between "abbbbbbbbbbbbbbbbbbbb" and "Cafe2"; +drop table t1; + +--echo # +--echo # End of 10.1 tests +--echo # |