mirror of
https://github.com/MariaDB/server.git
synced 2025-01-19 21:42:35 +01:00
f2829d0386
Fixed (together with Guilhem) bugs in mysqlbinlog regarding --offset Prefix addresses with 0x for easier comparisons of debug logs Fixed problem where MySQL choosed index-read even if there would be a much better range on the same index This fix changed some 'index' queries to 'range' queries in the test suite Don't create 'dummy' WHERE clause for trivial WHERE clauses where we can remove the WHERE clause. This fix removed of a lot of 'Using where' notes in the test suite. Give NOTE instead of WARNING if table/function doesn't exists when using DROP IF EXISTS Give NOTE instead of WARNING for safe field-type conversions
338 lines
16 KiB
Text
338 lines
16 KiB
Text
drop table if exists t0, t1, t2, t3,t4;
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create table t0
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(
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key1 int not null,
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INDEX i1(key1)
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);
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alter table t0 add key2 int not null, add index i2(key2);
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alter table t0 add key3 int not null, add index i3(key3);
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alter table t0 add key4 int not null, add index i4(key4);
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alter table t0 add key5 int not null, add index i5(key5);
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alter table t0 add key6 int not null, add index i6(key6);
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alter table t0 add key7 int not null, add index i7(key7);
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alter table t0 add key8 int not null, add index i8(key8);
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update t0 set key2=key1,key3=key1,key4=key1,key5=key1,key6=key1,key7=key1,key8=1024-key1;
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analyze table t0;
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Table Op Msg_type Msg_text
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test.t0 analyze status OK
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explain select * from t0 where key1 < 3 or key1 > 1020;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 range i1 i1 4 NULL 55 Using where
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explain
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select * from t0 where key1 < 3 or key2 > 1020;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 31 Using sort_union(i1,i2); Using where
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select * from t0 where key1 < 3 or key2 > 1020;
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key1 key2 key3 key4 key5 key6 key7 key8
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1 1 1 1 1 1 1 1023
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2 2 2 2 2 2 2 1022
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1021 1021 1021 1021 1021 1021 1021 3
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1022 1022 1022 1022 1022 1022 1022 2
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1023 1023 1023 1023 1023 1023 1023 1
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1024 1024 1024 1024 1024 1024 1024 0
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explain select * from t0 where key1 < 3 or key2 <4;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 7 Using sort_union(i1,i2); Using where
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explain
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select * from t0 where (key1 > 30 and key1<35) or (key2 >32 and key2 < 40);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 9 Using sort_union(i1,i2); Using where
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select * from t0 where (key1 > 30 and key1<35) or (key2 >32 and key2 < 40);
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key1 key2 key3 key4 key5 key6 key7 key8
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31 31 31 31 31 31 31 993
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32 32 32 32 32 32 32 992
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33 33 33 33 33 33 33 991
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34 34 34 34 34 34 34 990
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35 35 35 35 35 35 35 989
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36 36 36 36 36 36 36 988
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37 37 37 37 37 37 37 987
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38 38 38 38 38 38 38 986
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39 39 39 39 39 39 39 985
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explain select * from t0 ignore index (i2) where key1 < 3 or key2 <4;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 ALL i1 NULL NULL NULL 1024 Using where
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explain select * from t0 where (key1 < 3 or key2 <4) and key3 = 50;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 ref i1,i2,i3 i3 4 const 1 Using where
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explain select * from t0 use index (i1,i2) where (key1 < 3 or key2 <4) and key3 = 50;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 7 Using sort_union(i1,i2); Using where
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explain select * from t0 where (key1 > 1 or key2 > 2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 ALL i1,i2 NULL NULL NULL 1024 Using where
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explain select * from t0 force index (i1,i2) where (key1 > 1 or key2 > 2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 1024 Using sort_union(i1,i2); Using where
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explain
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select * from t0 where key1<3 or key2<3 or (key1>5 and key1<8) or
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(key1>10 and key1<12) or (key2>100 and key2<110);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 17 Using sort_union(i1,i2); Using where
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explain select * from t0 where key2 = 45 or key1 <=> null;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 range i1,i2 i2 4 NULL 1 Using where
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explain select * from t0 where key2 = 45 or key1 is not null;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 ALL i1,i2 NULL NULL NULL 1024 Using where
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explain select * from t0 where key2 = 45 or key1 is null;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 range i1,i2 i2 4 NULL 1 Using where
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explain select * from t0 where key2=10 or key3=3 or key4 <=> null;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i2,i3,i4 i2,i3 4,4 NULL 2 Using union(i2,i3); Using where
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explain select * from t0 where key2=10 or key3=3 or key4 is null;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i2,i3,i4 i2,i3 4,4 NULL 2 Using union(i2,i3); Using where
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explain select key1 from t0 where (key1 <=> null) or (key2 < 5) or
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(key3=10) or (key4 <=> null);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2,i3,i4 i2,i3 4,4 NULL 6 Using sort_union(i2,i3); Using where
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explain select key1 from t0 where (key1 <=> null) or (key1 < 5) or
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(key3=10) or (key4 <=> null);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i3,i4 i1,i3 4,4 NULL 5 Using sort_union(i1,i3); Using where
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explain select * from t0 where
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(key1 < 3 or key2 < 3) and (key3 < 4 or key4 < 4) and (key5 < 5 or key6 < 5);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2,i3,i4,i5,i6 i1,i2 4,4 NULL 6 Using sort_union(i1,i2); Using where
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explain
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select * from t0 where (key1 < 3 or key2 < 6) and (key1 < 7 or key3 < 4);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2,i3 i1,i2 4,4 NULL 9 Using sort_union(i1,i2); Using where
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select * from t0 where (key1 < 3 or key2 < 6) and (key1 < 7 or key3 < 4);
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key1 key2 key3 key4 key5 key6 key7 key8
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1 1 1 1 1 1 1 1023
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2 2 2 2 2 2 2 1022
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3 3 3 3 3 3 3 1021
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4 4 4 4 4 4 4 1020
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5 5 5 5 5 5 5 1019
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explain select * from t0 where
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(key1 < 3 or key2 < 3) and (key3 < 4 or key4 < 4) and (key5 < 2 or key6 < 2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2,i3,i4,i5,i6 i1,i2 4,4 NULL 6 Using sort_union(i1,i2); Using where
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explain select * from t0 where
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(key1 < 3 or key2 < 3) and (key3 < 100);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 range i1,i2,i3 i3 4 NULL 96 Using where
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explain select * from t0 where
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(key1 < 3 or key2 < 3) and (key3 < 1000);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 ALL i1,i2,i3 NULL NULL NULL 1024 Using where
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explain select * from t0 where
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((key1 < 4 or key2 < 4) and (key2 <5 or key3 < 4))
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or
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key2 > 5;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 ALL i1,i2,i3 NULL NULL NULL 1024 Using where
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explain select * from t0 where
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((key1 < 4 or key2 < 4) and (key2 <5 or key3 < 4))
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or
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key1 < 7;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2,i3 i1,i2 4,4 NULL 10 Using sort_union(i1,i2); Using where
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select * from t0 where
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((key1 < 4 or key2 < 4) and (key2 <5 or key3 < 4))
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or
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key1 < 7;
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key1 key2 key3 key4 key5 key6 key7 key8
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1 1 1 1 1 1 1 1023
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2 2 2 2 2 2 2 1022
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3 3 3 3 3 3 3 1021
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4 4 4 4 4 4 4 1020
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5 5 5 5 5 5 5 1019
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6 6 6 6 6 6 6 1018
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explain select * from t0 where
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((key1 < 4 or key2 < 4) and (key3 <5 or key5 < 4))
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or
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((key5 < 5 or key6 < 6) and (key7 <7 or key8 < 4));
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2,i3,i5,i6,i7,i8 i1,i2,i5,i6 4,4,4,4 NULL 19 Using sort_union(i1,i2,i5,i6); Using where
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explain select * from t0 where
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((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
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or
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((key7 <7 or key8 < 4) and (key5 < 5 or key6 < 6));
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2,i3,i5,i6,i7,i8 i3,i5,i7,i8 4,4,4,4 NULL 21 Using sort_union(i3,i5,i7,i8); Using where
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explain select * from t0 where
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((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
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or
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((key3 <7 or key5 < 2) and (key5 < 5 or key6 < 6));
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2,i3,i5,i6 i3,i5 4,4 NULL 11 Using sort_union(i3,i5); Using where
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explain select * from t0 where
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((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
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or
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(((key3 <7 and key7 < 6) or key5 < 2) and (key5 < 5 or key6 < 6));
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2,i3,i5,i6,i7 i3,i5 4,4 NULL 11 Using sort_union(i3,i5); Using where
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explain select * from t0 where
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((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
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or
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((key3 >=5 or key5 < 2) and (key5 < 5 or key6 < 6));
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 ALL i1,i2,i3,i5,i6 NULL NULL NULL 1024 Using where
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explain select * from t0 force index(i1, i2, i3, i4, i5, i6 ) where
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((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
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or
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((key3 >=5 or key5 < 2) and (key5 < 5 or key6 < 6));
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2,i3,i5,i6 i3,i5 0,4 NULL 1024 Using sort_union(i3,i5); Using where
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select * from t0 where key1 < 5 or key8 < 4 order by key1;
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key1 key2 key3 key4 key5 key6 key7 key8
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1 1 1 1 1 1 1 1023
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2 2 2 2 2 2 2 1022
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3 3 3 3 3 3 3 1021
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4 4 4 4 4 4 4 1020
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1021 1021 1021 1021 1021 1021 1021 3
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1022 1022 1022 1022 1022 1022 1022 2
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1023 1023 1023 1023 1023 1023 1023 1
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1024 1024 1024 1024 1024 1024 1024 0
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explain
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select * from t0 where key1 < 5 or key8 < 4 order by key1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i8 i1,i8 4,4 NULL 9 Using sort_union(i1,i8); Using where; Using filesort
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create table t2 like t0;
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insert into t2 select * from t0;
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alter table t2 add index i1_3(key1, key3);
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alter table t2 add index i2_3(key2, key3);
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alter table t2 drop index i1;
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alter table t2 drop index i2;
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alter table t2 add index i321(key3, key2, key1);
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explain select key3 from t2 where key1 = 100 or key2 = 100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 index_merge i1_3,i2_3 i1_3,i2_3 4,4 NULL 2 Using sort_union(i1_3,i2_3); Using where
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explain select key3 from t2 where key1 <100 or key2 < 100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 index i1_3,i2_3 i321 12 NULL 1024 Using where; Using index
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explain select key7 from t2 where key1 <100 or key2 < 100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 ALL i1_3,i2_3 NULL NULL NULL 1024 Using where
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create table t4 (
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key1a int not null,
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key1b int not null,
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key2 int not null,
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key2_1 int not null,
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key2_2 int not null,
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key3 int not null,
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index i1a (key1a, key1b),
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index i1b (key1b, key1a),
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index i2_1(key2, key2_1),
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index i2_2(key2, key2_1)
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);
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insert into t4 select key1,key1,key1 div 10, key1 % 10, key1 % 10, key1 from t0;
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select * from t4 where key1a = 3 or key1b = 4;
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key1a key1b key2 key2_1 key2_2 key3
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3 3 0 3 3 3
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4 4 0 4 4 4
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explain select * from t4 where key1a = 3 or key1b = 4;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t4 index_merge i1a,i1b i1a,i1b 4,4 NULL 2 Using sort_union(i1a,i1b); Using where
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explain select * from t4 where key2 = 1 and (key2_1 = 1 or key3 = 5);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t4 ref i2_1,i2_2 i2_1 4 const 10 Using where
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explain select * from t4 where key2 = 1 and (key2_1 = 1 or key2_2 = 5);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t4 ref i2_1,i2_2 i2_1 4 const 10 Using where
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explain select * from t4 where key2_1 = 1 or key2_2 = 5;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t4 ALL NULL NULL NULL NULL 1024 Using where
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create table t1 like t0;
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insert into t1 select * from t0;
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explain select * from t0 left join t1 on (t0.key1=t1.key1)
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where t0.key1=3 or t0.key2=4;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 2 Using union(i1,i2); Using where
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1 SIMPLE t1 ref i1 i1 4 test.t0.key1 1
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select * from t0 left join t1 on (t0.key1=t1.key1)
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where t0.key1=3 or t0.key2=4;
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key1 key2 key3 key4 key5 key6 key7 key8 key1 key2 key3 key4 key5 key6 key7 key8
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3 3 3 3 3 3 3 1021 3 3 3 3 3 3 3 1021
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4 4 4 4 4 4 4 1020 4 4 4 4 4 4 4 1020
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explain
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select * from t0,t1 where (t0.key1=t1.key1) and ( t0.key1=3 or t0.key2=4);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 2 Using union(i1,i2); Using where
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1 SIMPLE t1 ref i1 i1 4 test.t0.key1 1
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explain
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select * from t0,t1 where (t0.key1=t1.key1) and
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(t0.key1=3 or t0.key2=4) and t1.key1<200;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 2 Using union(i1,i2); Using where
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1 SIMPLE t1 ref i1 i1 4 test.t0.key1 1 Using where
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explain
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select * from t0,t1 where (t0.key1=t1.key1) and
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(t0.key1=3 or t0.key2<4) and t1.key1=2;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 ref i1,i2 i1 4 const 1 Using where
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1 SIMPLE t1 ref i1 i1 4 const 1
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explain select * from t0,t1 where t0.key1 = 5 and
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(t1.key1 = t0.key1 or t1.key8 = t0.key1);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 ref i1 i1 4 const 1
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1 SIMPLE t1 index_merge i1,i8 i1,i8 4,4 NULL 2 Using union(i1,i8); Using where
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explain select * from t0,t1 where t0.key1 < 3 and
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(t1.key1 = t0.key1 or t1.key8 = t0.key1);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 range i1 i1 4 NULL 3 Using where
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1 SIMPLE t1 ALL i1,i8 NULL NULL NULL 1024 Range checked for each record (index map: 0x81)
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explain select * from t1 where key1=3 or key2=4
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union select * from t1 where key1<4 or key3=5;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 index_merge i1,i2 i1,i2 4,4 NULL 2 Using union(i1,i2); Using where
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2 UNION t1 index_merge i1,i3 i1,i3 4,4 NULL 5 Using sort_union(i1,i3); Using where
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NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
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explain select * from (select * from t1 where key1 = 3 or key2 =3) as Z where key8 >5;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY <derived2> system NULL NULL NULL NULL 1
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2 DERIVED t1 index_merge i1,i2 i1,i2 4,4 NULL 2 Using union(i1,i2); Using where
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create table t3 like t0;
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insert into t3 select * from t0;
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alter table t3 add key9 int not null, add index i9(key9);
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alter table t3 add keyA int not null, add index iA(keyA);
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alter table t3 add keyB int not null, add index iB(keyB);
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alter table t3 add keyC int not null, add index iC(keyC);
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update t3 set key9=key1,keyA=key1,keyB=key1,keyC=key1;
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explain select * from t3 where
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key1=1 or key2=2 or key3=3 or key4=4 or
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key5=5 or key6=6 or key7=7 or key8=8 or
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key9=9 or keyA=10 or keyB=11 or keyC=12;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t3 index_merge i1,i2,i3,i4,i5,i6,i7,i8,i9,iA,iB,iC i1,i2,i3,i4,i5,i6,i7,i8,i9,iA,iB,iC 4,4,4,4,4,4,4,4,4,4,4,4 NULL 12 Using union(i1,i2,i3,i4,i5,i6,i7,i8,i9,iA,iB,iC); Using where
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select * from t3 where
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key1=1 or key2=2 or key3=3 or key4=4 or
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key5=5 or key6=6 or key7=7 or key8=8 or
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key9=9 or keyA=10 or keyB=11 or keyC=12;
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key1 key2 key3 key4 key5 key6 key7 key8 key9 keyA keyB keyC
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1 1 1 1 1 1 1 1023 1 1 1 1
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2 2 2 2 2 2 2 1022 2 2 2 2
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3 3 3 3 3 3 3 1021 3 3 3 3
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4 4 4 4 4 4 4 1020 4 4 4 4
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|
5 5 5 5 5 5 5 1019 5 5 5 5
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|
6 6 6 6 6 6 6 1018 6 6 6 6
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|
7 7 7 7 7 7 7 1017 7 7 7 7
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|
9 9 9 9 9 9 9 1015 9 9 9 9
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|
10 10 10 10 10 10 10 1014 10 10 10 10
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|
11 11 11 11 11 11 11 1013 11 11 11 11
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|
12 12 12 12 12 12 12 1012 12 12 12 12
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|
1016 1016 1016 1016 1016 1016 1016 8 1016 1016 1016 1016
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explain select * from t0 where key1 < 3 or key2 < 4;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t0 index_merge i1,i2 i1,i2 4,4 NULL 7 Using sort_union(i1,i2); Using where
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select * from t0 where key1 < 3 or key2 < 4;
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key1 key2 key3 key4 key5 key6 key7 key8
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|
1 1 1 1 1 1 1 1023
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|
2 2 2 2 2 2 2 1022
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|
3 3 3 3 3 3 3 1021
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|
update t0 set key8=123 where key1 < 3 or key2 < 4;
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|
select * from t0 where key1 < 3 or key2 < 4;
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|
key1 key2 key3 key4 key5 key6 key7 key8
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1 1 1 1 1 1 1 123
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2 2 2 2 2 2 2 123
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|
3 3 3 3 3 3 3 123
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|
delete from t0 where key1 < 3 or key2 < 4;
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select * from t0 where key1 < 3 or key2 < 4;
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key1 key2 key3 key4 key5 key6 key7 key8
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select count(*) from t0;
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count(*)
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|
1021
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drop table t0, t1, t2, t3, t4;
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