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mariadb/mysql-test/r/intersect.result
Oleksandr Byelkin 623ed1c204 MDEV-13723: Server crashes in ha_heap::find_unique_row or Assertion `0' failed in st_select_lex_unit::optimize with INTERSECT 
With INTERSECT/EXCEPT fact that subquery item of IN/ALL/ANY was not assigned value does not mean that temporary table used for calculating unit is empty (records could be deleted).
2017-11-10 14:31:50 +01:00

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create table t1 (a int, b int);
create table t2 (c int, d int);
insert into t1 values (1,1),(2,2);
insert into t2 values (2,2),(3,3);
(select a,b from t1) intersect (select c,d from t2);
a b
2 2
drop tables t1,t2;
create table t1 (a int, b int) engine=MyISAM;
create table t2 (c int, d int) engine=MyISAM;
create table t3 (e int, f int) engine=MyISAM;
insert into t1 values (1,1),(2,2),(3,3);
insert into t2 values (2,2),(3,3),(4,4);
insert into t3 values (1,1),(2,2),(5,5);
(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
a b
2 2
EXPLAIN (select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3
2 INTERSECT t2 ALL NULL NULL NULL NULL 3
3 INTERSECT t3 ALL NULL NULL NULL NULL 3
NULL INTERSECT RESULT <intersect1,2,3> ALL NULL NULL NULL NULL NULL
EXPLAIN extended (select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
2 INTERSECT t2 ALL NULL NULL NULL NULL 3 100.00
3 INTERSECT t3 ALL NULL NULL NULL NULL 3 100.00
NULL INTERSECT RESULT <intersect1,2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (/* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) intersect (/* select#2 */ select `test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2`) intersect (/* select#3 */ select `test`.`t3`.`e` AS `e`,`test`.`t3`.`f` AS `f` from `test`.`t3`)
EXPLAIN extended select * from ((select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3)) a;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00
2 DERIVED t1 ALL NULL NULL NULL NULL 3 100.00
3 INTERSECT t2 ALL NULL NULL NULL NULL 3 100.00
4 INTERSECT t3 ALL NULL NULL NULL NULL 3 100.00
NULL INTERSECT RESULT <intersect2,3,4> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `a`.`a` AS `a`,`a`.`b` AS `b` from ((/* select#2 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) intersect (/* select#3 */ select `test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2`) intersect (/* select#4 */ select `test`.`t3`.`e` AS `e`,`test`.`t3`.`f` AS `f` from `test`.`t3`)) `a`
EXPLAIN format=json (select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
EXPLAIN
{
"query_block": {
"union_result": {
"table_name": "<intersect1,2,3>",
"access_type": "ALL",
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 3,
"filtered": 100
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "INTERSECT",
"table": {
"table_name": "t2",
"access_type": "ALL",
"rows": 3,
"filtered": 100
}
}
},
{
"query_block": {
"select_id": 3,
"operation": "INTERSECT",
"table": {
"table_name": "t3",
"access_type": "ALL",
"rows": 3,
"filtered": 100
}
}
}
]
}
}
}
ANALYZE format=json (select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<intersect1,2,3>",
"access_type": "ALL",
"r_loops": 1,
"r_rows": 1,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t1",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "INTERSECT",
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t2",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
}
},
{
"query_block": {
"select_id": 3,
"operation": "INTERSECT",
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t3",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
}
}
]
}
}
}
ANALYZE format=json select * from ((select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3)) a;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "<derived2>",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 1,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100,
"materialized": {
"query_block": {
"union_result": {
"table_name": "<intersect2,3,4>",
"access_type": "ALL",
"r_loops": 1,
"r_rows": 1,
"query_specifications": [
{
"query_block": {
"select_id": 2,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t1",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
}
},
{
"query_block": {
"select_id": 3,
"operation": "INTERSECT",
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t2",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
}
},
{
"query_block": {
"select_id": 4,
"operation": "INTERSECT",
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t3",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
}
}
]
}
}
}
}
}
}
select * from ((select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3)) a;
a b
2 2
prepare stmt from "(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);";
execute stmt;
a b
2 2
execute stmt;
a b
2 2
prepare stmt from "select * from ((select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3)) a";
execute stmt;
a b
2 2
execute stmt;
a b
2 2
(select a,b from t1) intersect (select c,e from t2,t3);
a b
2 2
EXPLAIN (select a,b from t1) intersect (select c,e from t2,t3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3
2 INTERSECT t2 ALL NULL NULL NULL NULL 3
2 INTERSECT t3 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join)
NULL INTERSECT RESULT <intersect1,2> ALL NULL NULL NULL NULL NULL
EXPLAIN extended (select a,b from t1) intersect (select c,e from t2,t3);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00
2 INTERSECT t2 ALL NULL NULL NULL NULL 3 100.00
2 INTERSECT t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
NULL INTERSECT RESULT <intersect1,2> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (/* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) intersect (/* select#2 */ select `test`.`t2`.`c` AS `c`,`test`.`t3`.`e` AS `e` from `test`.`t2` join `test`.`t3`)
EXPLAIN extended select * from ((select a,b from t1) intersect (select c,e from t2,t3)) a;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 100.00
2 DERIVED t1 ALL NULL NULL NULL NULL 3 100.00
3 INTERSECT t2 ALL NULL NULL NULL NULL 3 100.00
3 INTERSECT t3 ALL NULL NULL NULL NULL 3 100.00 Using join buffer (flat, BNL join)
NULL INTERSECT RESULT <intersect2,3> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 /* select#1 */ select `a`.`a` AS `a`,`a`.`b` AS `b` from ((/* select#2 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) intersect (/* select#3 */ select `test`.`t2`.`c` AS `c`,`test`.`t3`.`e` AS `e` from `test`.`t2` join `test`.`t3`)) `a`
EXPLAIN format=json (select a,b from t1) intersect (select c,e from t2,t3);
EXPLAIN
{
"query_block": {
"union_result": {
"table_name": "<intersect1,2>",
"access_type": "ALL",
"query_specifications": [
{
"query_block": {
"select_id": 1,
"table": {
"table_name": "t1",
"access_type": "ALL",
"rows": 3,
"filtered": 100
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "INTERSECT",
"table": {
"table_name": "t2",
"access_type": "ALL",
"rows": 3,
"filtered": 100
},
"block-nl-join": {
"table": {
"table_name": "t3",
"access_type": "ALL",
"rows": 3,
"filtered": 100
},
"buffer_type": "flat",
"buffer_size": "256Kb",
"join_type": "BNL"
}
}
}
]
}
}
}
ANALYZE format=json (select a,b from t1) intersect (select c,e from t2,t3);
ANALYZE
{
"query_block": {
"union_result": {
"table_name": "<intersect1,2>",
"access_type": "ALL",
"r_loops": 1,
"r_rows": 1,
"query_specifications": [
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t1",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
}
},
{
"query_block": {
"select_id": 2,
"operation": "INTERSECT",
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t2",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
},
"block-nl-join": {
"table": {
"table_name": "t3",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
},
"buffer_type": "flat",
"buffer_size": "256Kb",
"join_type": "BNL",
"r_filtered": 100
}
}
}
]
}
}
}
ANALYZE format=json select * from ((select a,b from t1) intersect (select c,e from t2,t3)) a;
ANALYZE
{
"query_block": {
"select_id": 1,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "<derived2>",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 1,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100,
"materialized": {
"query_block": {
"union_result": {
"table_name": "<intersect2,3>",
"access_type": "ALL",
"r_loops": 1,
"r_rows": 1,
"query_specifications": [
{
"query_block": {
"select_id": 2,
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t1",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
}
}
},
{
"query_block": {
"select_id": 3,
"operation": "INTERSECT",
"r_loops": 1,
"r_total_time_ms": "REPLACED",
"table": {
"table_name": "t2",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
},
"block-nl-join": {
"table": {
"table_name": "t3",
"access_type": "ALL",
"r_loops": 1,
"rows": 3,
"r_rows": 3,
"r_total_time_ms": "REPLACED",
"filtered": 100,
"r_filtered": 100
},
"buffer_type": "flat",
"buffer_size": "256Kb",
"join_type": "BNL",
"r_filtered": 100
}
}
}
]
}
}
}
}
}
}
select * from ((select a,b from t1) intersect (select c,e from t2,t3)) a;
a b
2 2
prepare stmt from "(select a,b from t1) intersect (select c,e from t2,t3);";
execute stmt;
a b
2 2
execute stmt;
a b
2 2
prepare stmt from "select * from ((select a,b from t1) intersect (select c,e from t2,t3)) a";
execute stmt;
a b
2 2
execute stmt;
a b
2 2
drop tables t1,t2,t3;
select 1 as a from dual intersect select 1 from dual;
a
1
(select 1 from dual) intersect (select 1 from dual);
1
1
(select 1 from dual into @v) intersect (select 1 from dual);
ERROR HY000: Incorrect usage of INTERSECT and INTO
select 1 from dual ORDER BY 1 intersect select 1 from dual;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'intersect select 1 from dual' at line 1
select 1 as a from dual union all select 1 from dual;
a
1
1
select 1 from dual intersect all select 1 from dual;
ERROR HY000: Incorrect usage of INTERSECT and ALL
create table t1 (a int, b blob, a1 int, b1 blob);
create table t2 (c int, d blob, c1 int, d1 blob);
insert into t1 values (1,"ddd", 1, "sdfrrwwww"),(2, "fgh", 2, "dffggtt");
insert into t2 values (2, "fgh", 2, "dffggtt"),(3, "ffggddd", 3, "dfgg");
(select a,b,b1 from t1) intersect (select c,d,d1 from t2);
a b b1
2 fgh dffggtt
drop tables t1,t2;
create table t1 (a int, b blob) engine=MyISAM;
create table t2 (c int, d blob) engine=MyISAM;
create table t3 (e int, f blob) engine=MyISAM;
insert into t1 values (1,1),(2,2),(3,3);
insert into t2 values (2,2),(3,3),(4,4);
insert into t3 values (1,1),(2,2),(5,5);
(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
a b
2 2
select * from ((select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3)) a;
a b
2 2
prepare stmt from "(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);";
execute stmt;
a b
2 2
execute stmt;
a b
2 2
prepare stmt from "select * from ((select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3)) a";
execute stmt;
a b
2 2
execute stmt;
a b
2 2
create table t4 (select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3);
show create table t4;
Table Create Table
t4 CREATE TABLE `t4` (
`a` int(11) DEFAULT NULL,
`b` blob DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop tables t1,t2,t3,t4;
create table t1 (a int, b blob) engine=MyISAM;
create table t2 (c int, d blob) engine=MyISAM;
create table t3 (e int, f blob) engine=MyISAM;
insert into t1 values (1,1),(2,2),(3,3);
insert into t2 values (2,2),(3,3);
insert into t3 values (1,1),(2,2),(3,3);
(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3) union (select 4,4);
a b
2 2
3 3
4 4
(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3) union (select 4,4) except (select 2,2);
a b
3 3
4 4
drop tables t1,t2,t3;
create table t1 (a int, b int);
create table t2 (c int, d int);
create table t3 (e int, f int);
insert into t1 values (1,1),(2,2),(3,3);
insert into t2 values (2,2),(3,3);
insert into t3 values (1,1),(2,2),(3,3);
(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3) union (select 4,4);
a b
2 2
3 3
4 4
(select a,b from t1) intersect (select c,d from t2) intersect (select e,f from t3) union (select 4,4) except (select 2,2);
a b
3 3
4 4
drop tables t1,t2,t3;
#
# INTERSECT precedence
#
create table t1 (a int, b blob) engine=MyISAM;
create table t2 (c int, d blob) engine=MyISAM;
create table t3 (e int, f blob) engine=MyISAM;
insert into t1 values (5,5),(6,6);
insert into t2 values (2,2),(3,3);
insert into t3 values (1,1),(3,3);
(select a,b from t1) union (select c,d from t2) intersect (select e,f from t3) union (select 4,4);
a b
3 3
4 4
5 5
6 6
explain extended
(select a,b from t1) union (select c,d from t2) intersect (select e,f from t3) union (select 4,4);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
3 UNION <derived2> ALL NULL NULL NULL NULL 2 100.00
2 DERIVED t2 ALL NULL NULL NULL NULL 2 100.00
4 INTERSECT t3 ALL NULL NULL NULL NULL 2 100.00
NULL INTERSECT RESULT <intersect2,4> ALL NULL NULL NULL NULL NULL NULL
5 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNION RESULT <union1,3,5> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (/* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) union /* select#3 */ select `__3`.`c` AS `c`,`__3`.`d` AS `d` from ((/* select#2 */ select `test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2`) intersect (/* select#4 */ select `test`.`t3`.`e` AS `e`,`test`.`t3`.`f` AS `f` from `test`.`t3`)) `__3` union (/* select#5 */ select 4 AS `4`,4 AS `4`)
(select e,f from t3) intersect (select c,d from t2) union (select a,b from t1) union (select 4,4);
e f
3 3
4 4
5 5
6 6
explain extended
(select e,f from t3) intersect (select c,d from t2) union (select a,b from t1) union (select 4,4);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 2 100.00
2 INTERSECT t2 ALL NULL NULL NULL NULL 2 100.00
3 UNION t1 ALL NULL NULL NULL NULL 2 100.00
4 UNION NULL NULL NULL NULL NULL NULL NULL NULL No tables used
NULL UNIT RESULT <unit1,2,3,4> ALL NULL NULL NULL NULL NULL NULL
Warnings:
Note 1003 (/* select#1 */ select `test`.`t3`.`e` AS `e`,`test`.`t3`.`f` AS `f` from `test`.`t3`) intersect (/* select#2 */ select `test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2`) union (/* select#3 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) union (/* select#4 */ select 4 AS `4`,4 AS `4`)
(/* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) union /* select#3 */ select `__3`.`c` AS `c`,`__3`.`d` AS `d` from ((/* select#2 */ select `test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2`) intersect (/* select#4 */ select `test`.`t3`.`e` AS `e`,`test`.`t3`.`f` AS `f` from `test`.`t3`)) `__3` union (/* select#5 */ select 4 AS `4`,4 AS `4`);
a b
3 3
4 4
5 5
6 6
prepare stmt from "(select a,b from t1) union (select c,d from t2) intersect (select e,f from t3) union (select 4,4)";
execute stmt;
a b
5 5
6 6
3 3
4 4
execute stmt;
a b
5 5
6 6
3 3
4 4
create view v1 as (select a,b from t1) union (select c,d from t2) intersect (select e,f from t3) union (select 4,4);
select b,a,b+1 from v1;
b a b+1
3 3 4
4 4 5
5 5 6
6 6 7
select b,a,b+1 from v1 where a > 3;
b a b+1
4 4 5
5 5 6
6 6 7
create procedure p1()
select * from v1;
call p1();
a b
3 3
4 4
5 5
6 6
call p1();
a b
3 3
4 4
5 5
6 6
drop procedure p1;
create procedure p1()
(select a,b from t1) union (select c,d from t2) intersect (select e,f from t3) union (select 4,4);
call p1();
a b
3 3
4 4
5 5
6 6
call p1();
a b
3 3
4 4
5 5
6 6
drop procedure p1;
show create view v1;
View Create View character_set_client collation_connection
v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS (select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1`) union select `__3`.`c` AS `c`,`__3`.`d` AS `d` from ((select `test`.`t2`.`c` AS `c`,`test`.`t2`.`d` AS `d` from `test`.`t2`) intersect (select `test`.`t3`.`e` AS `e`,`test`.`t3`.`f` AS `f` from `test`.`t3`)) `__3` union (select 4 AS `4`,4 AS `4`) latin1 latin1_swedish_ci
drop view v1;
drop tables t1,t2,t3;
# End of 10.3 tests
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