mirror of
https://github.com/MariaDB/server.git
synced 2025-05-11 13:21:44 +03:00
1cf483aa58
The query was re-written *after* we had tagged it with NON_AGG_FIELD_USED. Remove the flag before continuing. mysql-test/r/explain.result: Update test case for Bug#48295. mysql-test/r/subselect.result: New test case. mysql-test/t/explain.test: Update test case for Bug#48295. mysql-test/t/subselect.test: New test case. sql/item.cc: Use accessor functions for non_agg_field_used/agg_func_used. sql/item_subselect.cc: Remove non_agg_field_used when we rewrite query '1 < some (...)' => '1 < max(...)' sql/item_sum.cc: Use accessor functions for non_agg_field_used/agg_func_used. sql/mysql_priv.h: Remove unused #defines. sql/sql_lex.cc: Initialize new member variables. sql/sql_lex.h: Replace full_group_by_flag with two boolean flags, and itroduce accessors for manipulating them. sql/sql_select.cc: Use accessor functions for non_agg_field_used/agg_func_used.
188 lines
8.3 KiB
Plaintext
188 lines
8.3 KiB
Plaintext
drop table if exists t1;
|
||
create table t1 (id int not null, str char(10), unique(str));
|
||
explain select * from t1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE t1 system NULL NULL NULL NULL 0 const row not found
|
||
insert into t1 values (1, null),(2, null),(3, "foo"),(4, "bar");
|
||
select * from t1 where str is null;
|
||
id str
|
||
1 NULL
|
||
2 NULL
|
||
select * from t1 where str="foo";
|
||
id str
|
||
3 foo
|
||
explain select * from t1 where str is null;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE t1 ref str str 11 const 1 Using where
|
||
explain select * from t1 where str="foo";
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE t1 const str str 11 const 1
|
||
explain select * from t1 ignore key (str) where str="foo";
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using where
|
||
explain select * from t1 use key (str,str) where str="foo";
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE t1 const str str 11 const 1
|
||
explain select * from t1 use key (str,str,foo) where str="foo";
|
||
ERROR HY000: Key 'foo' doesn't exist in table 't1'
|
||
explain select * from t1 ignore key (str,str,foo) where str="foo";
|
||
ERROR HY000: Key 'foo' doesn't exist in table 't1'
|
||
drop table t1;
|
||
explain select 1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
|
||
create table t1 (a int not null);
|
||
explain select count(*) from t1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
||
insert into t1 values(1);
|
||
explain select count(*) from t1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
||
insert into t1 values(1);
|
||
explain select count(*) from t1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
||
drop table t1;
|
||
set names koi8r;
|
||
create table <20><><EFBFBD> (<28><><EFBFBD>0 int, <20><><EFBFBD>1 int, key <20><><EFBFBD>0 (<28><><EFBFBD>0), key <20><><EFBFBD>01 (<28><><EFBFBD>0,<2C><><EFBFBD>1));
|
||
insert into <20><><EFBFBD> (<28><><EFBFBD>0) values (1);
|
||
insert into <20><><EFBFBD> (<28><><EFBFBD>0) values (2);
|
||
explain select <20><><EFBFBD>0 from <20><><EFBFBD> where <20><><EFBFBD>0=1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE <09><><EFBFBD> ref <09><><EFBFBD>0,<2C><><EFBFBD>01 <09><><EFBFBD>0 5 const 1 Using where; Using index
|
||
drop table <20><><EFBFBD>;
|
||
set names latin1;
|
||
select 3 into @v1;
|
||
explain select 3 into @v1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
|
||
create table t1(f1 int, f2 int);
|
||
insert into t1 values (1,1);
|
||
create view v1 as select * from t1 where f1=1;
|
||
explain extended select * from v1 where f2=1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE t1 system NULL NULL NULL NULL 1
|
||
Warnings:
|
||
Note 1003 select '1' AS `f1`,'1' AS `f2` from `test`.`t1` where 1
|
||
explain extended select * from t1 where 0;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
|
||
Warnings:
|
||
Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f2` AS `f2` from `test`.`t1` where 0
|
||
explain extended select * from t1 where 1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE t1 system NULL NULL NULL NULL 1
|
||
Warnings:
|
||
Note 1003 select '1' AS `f1`,'1' AS `f2` from `test`.`t1` where 1
|
||
explain extended select * from t1 having 0;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible HAVING
|
||
Warnings:
|
||
Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f2` AS `f2` from `test`.`t1` having 0
|
||
explain extended select * from t1 having 1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 SIMPLE t1 system NULL NULL NULL NULL 1
|
||
Warnings:
|
||
Note 1003 select '1' AS `f1`,'1' AS `f2` from `test`.`t1` having 1
|
||
drop view v1;
|
||
drop table t1;
|
||
CREATE TABLE t1(c INT);
|
||
INSERT INTO t1 VALUES (),();
|
||
CREATE TABLE t2 (b INT,
|
||
KEY(b),KEY(b),KEY(b),KEY(b),KEY(b),
|
||
KEY(b),KEY(b),KEY(b),KEY(b),KEY(b),
|
||
KEY(b),KEY(b),KEY(b),KEY(b),KEY(b),
|
||
KEY(b),KEY(b),KEY(b),KEY(b),KEY(b),
|
||
KEY(b),KEY(b),KEY(b),KEY(b),KEY(b),
|
||
KEY(b),KEY(b),KEY(b),KEY(b),KEY(b),
|
||
KEY(b),KEY(b),KEY(b),KEY(b),KEY(b),
|
||
KEY(b),KEY(b),KEY(b),KEY(b),KEY(b));
|
||
INSERT INTO t2 VALUES (),(),();
|
||
EXPLAIN SELECT 1 FROM
|
||
(SELECT 1 FROM t2,t1 WHERE b < c GROUP BY 1 LIMIT 1) AS d2;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
X X X X X X X X X const row not found
|
||
X X X X X X X X X
|
||
X X X X X X X X X Range checked for each record (index map: 0xFFFFFFFFFF)
|
||
DROP TABLE t2;
|
||
DROP TABLE t1;
|
||
CREATE TABLE t1(a INT);
|
||
CREATE TABLE t2(a INT);
|
||
INSERT INTO t1 VALUES (1),(2);
|
||
INSERT INTO t2 VALUES (1),(2);
|
||
EXPLAIN EXTENDED SELECT 1
|
||
FROM (SELECT COUNT(DISTINCT t1.a) FROM t1,t2 GROUP BY t1.a) AS s1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
|
||
2 DERIVED t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort
|
||
2 DERIVED t2 ALL NULL NULL NULL NULL 2
|
||
Warnings:
|
||
Note 1003 select 1 AS `1` from (select count(distinct `test`.`t1`.`a`) AS `COUNT(DISTINCT t1.a)` from `test`.`t1` join `test`.`t2` group by `test`.`t1`.`a`) `s1`
|
||
EXPLAIN EXTENDED SELECT 1
|
||
FROM (SELECT COUNT(DISTINCT t1.a) FROM t1,t2 GROUP BY t1.a) AS s1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
|
||
2 DERIVED t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort
|
||
2 DERIVED t2 ALL NULL NULL NULL NULL 2
|
||
Warnings:
|
||
Note 1003 select 1 AS `1` from (select count(distinct `test`.`t1`.`a`) AS `COUNT(DISTINCT t1.a)` from `test`.`t1` join `test`.`t2` group by `test`.`t1`.`a`) `s1`
|
||
prepare s1 from
|
||
'EXPLAIN EXTENDED SELECT 1
|
||
FROM (SELECT COUNT(DISTINCT t1.a) FROM t1,t2 GROUP BY t1.a) AS s1';
|
||
execute s1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
|
||
2 DERIVED t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort
|
||
2 DERIVED t2 ALL NULL NULL NULL NULL 2
|
||
Warnings:
|
||
Note 1003 select 1 AS `1` from (select count(distinct `test`.`t1`.`a`) AS `COUNT(DISTINCT t1.a)` from `test`.`t1` join `test`.`t2` group by `test`.`t1`.`a`) `s1`
|
||
prepare s1 from
|
||
'EXPLAIN EXTENDED SELECT 1
|
||
FROM (SELECT COUNT(DISTINCT t1.a) FROM t1,t2 GROUP BY t1.a) AS s1';
|
||
execute s1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
|
||
2 DERIVED t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort
|
||
2 DERIVED t2 ALL NULL NULL NULL NULL 2
|
||
Warnings:
|
||
Note 1003 select 1 AS `1` from (select count(distinct `test`.`t1`.`a`) AS `COUNT(DISTINCT t1.a)` from `test`.`t1` join `test`.`t2` group by `test`.`t1`.`a`) `s1`
|
||
execute s1;
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
|
||
2 DERIVED t1 ALL NULL NULL NULL NULL 2 Using temporary; Using filesort
|
||
2 DERIVED t2 ALL NULL NULL NULL NULL 2
|
||
Warnings:
|
||
Note 1003 select 1 AS `1` from (select count(distinct `test`.`t1`.`a`) AS `COUNT(DISTINCT t1.a)` from `test`.`t1` join `test`.`t2` group by `test`.`t1`.`a`) `s1`
|
||
DROP TABLE t1,t2;
|
||
CREATE TABLE t1 (a INT PRIMARY KEY);
|
||
EXPLAIN EXTENDED SELECT COUNT(a) FROM t1 USE KEY(a);
|
||
ERROR HY000: Key 'a' doesn't exist in table 't1'
|
||
DROP TABLE t1;
|
||
CREATE TABLE t1(a LONGTEXT);
|
||
INSERT INTO t1 VALUES (repeat('a',@@global.max_allowed_packet));
|
||
INSERT INTO t1 VALUES (repeat('b',@@global.max_allowed_packet));
|
||
EXPLAIN SELECT DISTINCT 1 FROM t1,
|
||
(SELECT DISTINCTROW a AS away FROM t1 GROUP BY a WITH ROLLUP) as d1
|
||
WHERE t1.a = d1.a;
|
||
ERROR 42S22: Unknown column 'd1.a' in 'where clause'
|
||
DROP TABLE t1;
|
||
#
|
||
# Bug#48295:
|
||
# explain extended crash with subquery and ONLY_FULL_GROUP_BY sql_mode
|
||
#
|
||
CREATE TABLE t1 (f1 INT);
|
||
SELECT @@session.sql_mode INTO @old_sql_mode;
|
||
SET SESSION sql_mode='ONLY_FULL_GROUP_BY';
|
||
EXPLAIN EXTENDED SELECT 1 FROM t1
|
||
WHERE f1 > ALL( SELECT t.f1 FROM t1,t1 AS t );
|
||
id select_type table type possible_keys key key_len ref rows Extra
|
||
1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
||
2 SUBQUERY t1 system NULL NULL NULL NULL 0 const row not found
|
||
2 SUBQUERY t system NULL NULL NULL NULL 0 const row not found
|
||
Warnings:
|
||
Note 1003 select 1 AS `1` from `test`.`t1` where 0
|
||
SET SESSION sql_mode=@old_sql_mode;
|
||
DROP TABLE t1;
|
||
End of 5.0 tests.
|