mariadb/mysql-test/t/subselect_innodb.test
Alexander Barkov f0a57acb49 MDEV-23535 SIGSEGV, SIGABRT and SIGILL in typeinfo for Item_func_set_collation (on optimized builds)
This piece of the code in Item_func_or_sum::agg_item_set_converter:

 if (!conv && ((*arg)->collation.repertoire == MY_REPERTOIRE_ASCII))
   conv= new (thd->mem_root) Item_func_conv_charset(thd, *arg, coll.collation, 1);

was wrong because:

1. It could change Item_cache to Item_func_conv_charset
  (with the old Item_cache in args[0]).
  Such Item type change is not always supported, e.g.
  the code in Item_singlerow_subselect::reset() expects only Item_cache,
  to be able to call Item_cache::set_null(). So it erroneously
  reinterpreted Item_func_conv_charset to Item_cache and called
  a non-existing method set_null(), which crashed the server.

2. The 1 in the last parameter to Item_func_conv_charset() was also
  a problem. In MariaDB versions where the reported query did not crash,
  it erroneously returned "empty set" instead of one row, because
  the 1 made subselects execute too earlier and return NULL.

Fix:

1. Removing the above two lines from Item_func_or_sum::agg_item_set_converter()

2. Adding the repertoire test inside the constructor of Item_func_conv_charset,
   so it now detects itself as "safe" in more cases than before.
   This is needed to avoid new "Illegal mix of collations" after
   removing the wrong code in various scenarios when character set
   conversion from pure ASCII happens, including the reported scenario.

So now this sequence:

   Item_cache -> Item_func_concat

is replaced to this compatible sequence (the top Item is still Item_cache):

   new Item_cache -> Item_func_conv_charset -> Item_func_concat

Before the fix it was replaced to this incompatible sequence:

   Item_func_conv_charset -> old Item_cache -> Item_func_concat
2020-09-03 14:20:06 +04:00

629 lines
18 KiB
Text

-- source include/have_innodb.inc
# Note: the tests uses only non-semijoin subqueries so semi-join switch
# settings are not relevant.
set @subselect_innodb_tmp=@@optimizer_switch;
set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
--disable_warnings
drop table if exists t1,t2,t3;
--enable_warnings
#
# key field overflow test
#
CREATE TABLE t1
(
FOLDERID VARCHAR(32)BINARY NOT NULL
, FOLDERNAME VARCHAR(255)BINARY NOT NULL
, CREATOR VARCHAR(255)BINARY
, CREATED TIMESTAMP NOT NULL
, DESCRIPTION VARCHAR(255)BINARY
, FOLDERTYPE INTEGER NOT NULL
, MODIFIED TIMESTAMP
, MODIFIER VARCHAR(255)BINARY
, FOLDERSIZE INTEGER NOT NULL
, PARENTID VARCHAR(32)BINARY
, REPID VARCHAR(32)BINARY
, ORIGINATOR INTEGER
, PRIMARY KEY ( FOLDERID )
) ENGINE=InnoDB;
CREATE INDEX FFOLDERID_IDX ON t1 (FOLDERID);
CREATE INDEX CMFLDRPARNT_IDX ON t1 (PARENTID);
INSERT INTO t1 VALUES("0c9aab05b15048c59bc35c8461507deb", "System", "System", "2003-06-05 16:30:00", "The system content repository folder.", "3", "2003-06-05 16:30:00", "System", "0", NULL, "9c9aab05b15048c59bc35c8461507deb", "1");
INSERT INTO t1 VALUES("2f6161e879db43c1a5b82c21ddc49089", "Default", "System", "2003-06-09 10:52:02", "The default content repository folder.", "3", "2003-06-05 16:30:00", "System", "0", NULL, "03eea05112b845949f3fd03278b5fe43", "1");
INSERT INTO t1 VALUES("c373e9f5ad0791724315444553544200", "AddDocumentTest", "admin", "2003-06-09 10:51:25", "Movie Reviews", "0", "2003-06-09 10:51:25", "admin", "0", "2f6161e879db43c1a5b82c21ddc49089", "03eea05112b845949f3fd03278b5fe43", NULL);
SELECT 'c373e9f5ad0791a0dab5444553544200' IN(SELECT t1.FOLDERID FROM t1 WHERE t1.PARENTID='2f6161e879db43c1a5b82c21ddc49089' AND t1.FOLDERNAME = 'Level1');
drop table t1;
#
# UNION unlocking test
#
create table t1 (a int) engine=innodb;
create table t2 (a int) engine=innodb;
create table t3 (a int) engine=innodb;
insert into t1 values (1),(2),(3),(4);
insert into t2 values (10),(20),(30),(40);
insert into t3 values (1),(2),(10),(50);
select a from t3 where t3.a in (select a from t1 where a <= 3 union select * from t2 where a <= 30);
drop table t1,t2,t3;
CREATE TABLE t1 (
processor_id INTEGER NOT NULL,
PRIMARY KEY (processor_id)
) ENGINE=InnoDB;
CREATE TABLE t3 (
yod_id BIGINT UNSIGNED AUTO_INCREMENT NOT NULL,
login_processor INTEGER UNSIGNED ,
PRIMARY KEY (yod_id)
) ENGINE=InnoDB;
CREATE TABLE t2 (
processor_id INTEGER NOT NULL,
yod_id BIGINT UNSIGNED NOT NULL,
PRIMARY KEY (processor_id, yod_id),
INDEX (processor_id),
INDEX (yod_id),
FOREIGN KEY (processor_id) REFERENCES t1(processor_id),
FOREIGN KEY (yod_id) REFERENCES t3(yod_id)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1),(2),(3);
INSERT INTO t3 VALUES (1,1),(2,2),(3,3);
INSERT INTO t2 VALUES (1,1),(2,2),(3,3);
SELECT distinct p1.processor_id, (SELECT y.yod_id FROM t1 p2, t2 y WHERE p2.processor_id = p1.processor_id and p2.processor_id = y.processor_id) FROM t1 p1;
drop table t2,t1,t3;
#
# innodb locking
#
CREATE TABLE t1 (
id int(11) NOT NULL default '0',
b int(11) default NULL,
c char(3) default NULL,
PRIMARY KEY (id),
KEY t2i1 (b)
) ENGINE=innodb DEFAULT CHARSET=latin1;
INSERT INTO t1 VALUES (0,0,'GPL'),(1,0,'GPL'),(2,1,'GPL'),(3,2,'GPL');
CREATE TABLE t2 (
id int(11) NOT NULL default '0',
b int(11) default NULL,
c char(3) default NULL,
PRIMARY KEY (id),
KEY t2i (b)
) ENGINE=innodb DEFAULT CHARSET=latin1;
INSERT INTO t2 VALUES (0,0,'GPL'),(1,0,'GPL'),(2,1,'GPL'),(3,2,'GPL');
select (select max(id) from t2 where b=1 group by b) as x,b from t1 where b=1;
drop table t1,t2;
#
# reiniting innodb tables
#
create table t1 (id int not null, value char(255), primary key(id)) engine=innodb;
create table t2 (id int not null, value char(255)) engine=innodb;
insert into t1 values (1,'a'),(2,'b');
insert into t2 values (1,'z'),(2,'x');
select t2.id,t2.value,(select t1.value from t1 where t1.id=t2.id) from t2;
select t2.id,t2.value,(select t1.value from t1 where t1.id=t2.id) from t2;
drop table t1,t2;
#
# unlocking tables with subqueries in HAVING
#
create table t1 (a int, b int) engine=innodb;
insert into t1 values (1,2), (1,3), (2,3), (2,4), (2,5), (3,4), (4,5), (4,100);
create table t2 (a int) engine=innodb;
insert into t2 values (1),(2),(3),(4);
select a, sum(b) as b from t1 group by a having b > (select max(a) from t2);
drop table t1, t2;
#
# bug #5220 test suite
#
CREATE TABLE `t1` ( `unit` varchar(50) NOT NULL default '', `ingredient` varchar(50) NOT NULL default '') ENGINE=InnoDB DEFAULT CHARSET=latin1;
CREATE TABLE `t2` ( `ingredient` varchar(50) NOT NULL default '', `unit` varchar(50) NOT NULL default '', PRIMARY KEY (ingredient, unit)) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO `t1` VALUES ('xx','yy');
INSERT INTO `t2` VALUES ('yy','xx');
SELECT R.unit, R.ingredient FROM t1 R WHERE R.ingredient IN (SELECT N.ingredient FROM t2 N WHERE N.unit = R.unit);
drop table t1, t2;
#
# possible early unlock
#
CREATE TABLE t1 (
id INT NOT NULL auto_increment,
date1 DATE, coworkerid INT,
description VARCHAR(255),
sum_used DOUBLE,
sum_remaining DOUBLE,
comments VARCHAR(255),
PRIMARY KEY(id)
) engine=innodb;
insert into t1 values (NULL, '1999-01-01', 1,'test', 22, 33, 'comment'), (NULL, '1999-01-01', 1,'test', 22, 33, 'comment'), (NULL, '1999-01-01', 1,'test', 22, 33, 'comment'), (NULL, '1998-01-01', 1,'test', 22, 33, 'comment'), (NULL, '1998-01-01', 1,'test', 22, 33, 'comment'), (NULL, '2004-01-01', 1,'test', 22, 33, 'comment'), (NULL, '2004-01-01', 1,'test', 22, 33, 'comment');
SELECT DISTINCT
(SELECT sum(sum_used) FROM t1 WHERE sum_used > 0 AND year(date1) <= '2004') as somallontvangsten,
(SELECT sum(sum_used) FROM t1 WHERE sum_used < 0 AND year(date1) <= '2004') as somalluitgaven
FROM t1;
select * from t1;
drop table t1;
#
# cleaning up of results of subselects (BUG#8125)
#
CREATE TABLE `t1` ( `a` char(3) NOT NULL default '', `b` char(3) NOT NULL default '', `c` char(3) NOT NULL default '', PRIMARY KEY (`a`,`b`,`c`)) ENGINE=InnoDB;
CREATE TABLE t2 LIKE t1;
INSERT INTO t1 VALUES (1,1,1);
INSERT INTO t2 VALUES (1,1,1);
PREPARE my_stmt FROM "SELECT t1.b, count(*) FROM t1 group by t1.b having
count(*) > ALL (SELECT COUNT(*) FROM t2 WHERE t2.a=1 GROUP By t2.b)";
EXECUTE my_stmt;
EXECUTE my_stmt;
deallocate prepare my_stmt;
drop table t1,t2;
# End of 4.1 tests
CREATE TABLE t1 (
school_name varchar(45) NOT NULL,
country varchar(45) NOT NULL,
funds_requested float NOT NULL,
schooltype varchar(45) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
insert into t1 values ("the school", "USA", 1200, "Human");
select count(country) as countrycount, sum(funds_requested) as smcnt,
country, (select sum(funds_requested) from t1) as total_funds
from t1
group by country;
select count(country) as countrycount, sum(funds_requested) as smcnt,
country, (select sum(funds_requested) from t1) as total_funds
from t1
group by country;
drop table t1;
#
# BUG#14342: wrong placement of subquery internals in complex queries
#
CREATE TABLE `t1` (
`t3_id` int NOT NULL,
`t1_id` int NOT NULL,
PRIMARY KEY (`t1_id`)
);
CREATE TABLE `t2` (
`t2_id` int NOT NULL,
`t1_id` int NOT NULL,
`b` int NOT NULL,
PRIMARY KEY (`t2_id`),
UNIQUE KEY `idx_t2_t1_b` (`t1_id`,`b`)
) ENGINE=InnoDB;
CREATE TABLE `t3` (
`t3_id` int NOT NULL
);
INSERT INTO `t3` VALUES (3);
select
(SELECT rs.t2_id
FROM t2 rs
WHERE rs.t1_id=
(SELECT lt.t1_id
FROM t1 lt
WHERE lt.t3_id=a.t3_id)
ORDER BY b DESC LIMIT 1)
from t3 AS a;
# repeat above query in SP
--disable_warnings
DROP PROCEDURE IF EXISTS p1;
--enable_warnings
delimiter //;
create procedure p1()
begin
declare done int default 3;
repeat
select
(SELECT rs.t2_id
FROM t2 rs
WHERE rs.t1_id=
(SELECT lt.t1_id
FROM t1 lt
WHERE lt.t3_id=a.t3_id)
ORDER BY b DESC LIMIT 1) as x
from t3 AS a;
set done= done-1;
until done <= 0 end repeat;
end//
delimiter ;//
call p1();
call p1();
call p1();
drop procedure p1;
drop tables t1,t2,t3;
--echo #
--echo # Bug #58756
--echo # Crash in heap_rrnd on query with HAVING ... IN (subquery) + LIMIT
--echo #
CREATE TABLE t1 (
col_time_key time DEFAULT NULL,
col_datetime_key datetime DEFAULT NULL,
col_varchar_nokey varchar(1) DEFAULT NULL,
KEY col_time_key (col_time_key),
KEY col_datetime_key (col_datetime_key)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO t1 VALUES ('17:53:30','2005-11-10 12:40:29','h');
INSERT INTO t1 VALUES ('11:35:49','2009-04-25 00:00:00','b');
INSERT INTO t1 VALUES (NULL,'2002-11-27 00:00:00','s');
INSERT INTO t1 VALUES ('06:01:40','2004-01-26 20:32:32','e');
INSERT INTO t1 VALUES ('05:45:11','2007-10-26 11:41:40','j');
INSERT INTO t1 VALUES ('00:00:00','2005-10-07 00:00:00','e');
INSERT INTO t1 VALUES ('00:00:00','2000-07-15 05:00:34','f');
INSERT INTO t1 VALUES ('06:11:01','2000-04-03 16:33:32','v');
INSERT INTO t1 VALUES ('13:02:46',NULL,'x');
INSERT INTO t1 VALUES ('21:44:25','2001-04-25 01:26:12','m');
INSERT INTO t1 VALUES ('22:43:58','2000-12-27 00:00:00','c');
CREATE TABLE t2 (
col_time_key time DEFAULT NULL,
col_datetime_key datetime DEFAULT NULL,
col_varchar_nokey varchar(1) DEFAULT NULL,
KEY col_time_key (col_time_key),
KEY col_datetime_key (col_datetime_key)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO t2 VALUES ('11:28:45','2004-10-11 18:13:16','w');
SELECT col_time_key, col_datetime_key
FROM
( SELECT * FROM t1 ) AS table1
HAVING ( 'r' , 'e' ) IN
( SELECT col_varchar_nokey , col_varchar_nokey FROM t2 )
ORDER BY col_datetime_key
LIMIT 10;
DROP TABLE t1;
DROP TABLE t2;
--echo # End of Bug #58756
--echo #
--echo # Bug#60085 crash in Item::save_in_field() with time data type
--echo #
CREATE TABLE t1(a date, b int, unique(b), unique(a), key(b)) engine=innodb;
INSERT INTO t1 VALUES ('2011-05-13', 0);
SELECT * FROM t1 WHERE b < (SELECT CAST(a as date) FROM t1 GROUP BY a);
DROP TABLE t1;
--echo #
--echo # Bug #11766300 59387: FAILING ASSERTION: CURSOR->POS_STATE == 1997660512 (BTR_PCUR_IS_POSITIONE
--echo #
CREATE TABLE t1 (a INT) ENGINE=INNODB;
INSERT INTO t1 VALUES (0);
CREATE TABLE t2 (d BINARY(2), PRIMARY KEY (d(1)), UNIQUE KEY (d)) ENGINE=INNODB;
SELECT 1 FROM t1 WHERE NOT EXISTS
(SELECT 1 FROM t2 WHERE d = (SELECT d FROM t2 WHERE a >= 1) ORDER BY d);
EXPLAIN SELECT 1 FROM t1 WHERE NOT EXISTS
(SELECT 1 FROM t2 WHERE d = (SELECT d FROM t2 WHERE a >= 1) ORDER BY d);
DROP TABLE t2;
CREATE TABLE t2 (b INT, c INT, UNIQUE KEY (b), UNIQUE KEY (b, c )) ENGINE=INNODB;
INSERT INTO t2 VALUES (1, 1);
SELECT 1 FROM t1
WHERE a != (SELECT 1 FROM t2 WHERE a <=> b OR a > '' AND 6 = 7 ORDER BY b, c);
DROP TABLE t1, t2;
--echo #
--echo # Bug #13639204 64111: CRASH ON SELECT SUBQUERY WITH NON UNIQUE
--echo # INDEX
--echo #
CREATE TABLE t1 (
id int
) ENGINE=InnoDB;
INSERT INTO t1 (id) VALUES (11);
CREATE TABLE t2 (
t1_id int,
position int,
KEY t1_id (t1_id),
KEY t1_id_position (t1_id,position)
) ENGINE=InnoDB;
let $query=SELECT
(SELECT position FROM t2
WHERE t2.t1_id = t1.id
ORDER BY t2.t1_id , t2.position
LIMIT 10,1
) AS maxkey
FROM t1
LIMIT 1;
eval EXPLAIN $query;
eval $query;
DROP TABLE t1,t2;
--echo End of 5.1 tests
--echo #
--echo # lp:827416 Crash in select_describe() on EXPLAIN with DISTINCT in nested subqueries
--echo #
CREATE TABLE t3 ( b int) ENGINE=InnoDB;
CREATE TABLE t2 ( c int) ENGINE=InnoDB;
CREATE TABLE t1 ( a int NOT NULL , PRIMARY KEY (a)) ENGINE=InnoDB;
EXPLAIN SELECT *
FROM t1
WHERE t1.a = (
SELECT SUM( c )
FROM t2
WHERE (SELECT DISTINCT b FROM t3) > 0);
SELECT *
FROM t1
WHERE t1.a = (
SELECT SUM( c )
FROM t2
WHERE (SELECT DISTINCT b FROM t3) > 0);
DROP TABLE t1, t2, t3;
--echo #
--echo # lp:858148 Fourth crash in select_describe() with nested subqueries
--echo #
CREATE TABLE t1 ( f1 int(11)) ENGINE=InnoDB;
CREATE TABLE t2 ( f1 int(11), f2 int(11), PRIMARY KEY (f1)) ;
CREATE TABLE t3 ( f3 int(11)) ENGINE=InnoDB;
EXPLAIN
SELECT MAX( f1 ) FROM t2
WHERE f2 >= (
SELECT SUM( f1 )
FROM t1
WHERE EXISTS (
SELECT f3
FROM t3
GROUP BY 1
)
);
SELECT MAX( f1 ) FROM t2
WHERE f2 >= (
SELECT SUM( f1 )
FROM t1
WHERE EXISTS (
SELECT f3
FROM t3
GROUP BY 1
)
);
drop table t1, t2, t3;
--echo #
--echo # LP BUG#1006231 crash in select_describe
--echo #
create table t1(a1 int) ENGINE=InnoDB;
insert into t1 values (1);
explain
select 1 from t1 where 1 like (select 1 from t1 where 1 <=> (select 1 from t1 group by a1));
select 1 from t1 where 1 like (select 1 from t1 where 1 <=> (select 1 from t1 group by a1));
drop table t1;
--echo #
--echo # MDEV-3988 crash in create_tmp_table
--echo #
drop table if exists `t1`,`t2`;
create table `t1`(`a` char(1) character set utf8)engine=innodb;
create table `t2`(`b` char(1) character set utf8)engine=memory;
select distinct (select 1 from `t2` where `a`) `d2` from `t1`;
select distinct (select 1 from `t2` where `a`) `d2`, a from `t1`;
select distinct a, (select 1 from `t2` where `a`) `d2` from `t1`;
select distinct (1 + (select 1 from `t2` where `a`)) `d2` from `t1`;
drop table t1,t2;
--echo #
--echo # MDEV-4042: Assertion `table->key_read == 0' fails in close_thread_table on EXPLAIN with GROUP BY and HAVING in EXISTS SQ,
--echo # MDEV-4536: ...sql/sql_base.cc:1598: bool close_thread_table(THD*, TABLE**): Assertion `table->key_read == 0' failed.
CREATE TABLE t1 (a INT) ENGINE=InnoDB;
CREATE TABLE t2 (b INT PRIMARY KEY, c INT) ENGINE=InnoDB;
CREATE TABLE t3 (d INT) ENGINE=InnoDB;
EXPLAIN
SELECT * FROM t1 WHERE EXISTS ( SELECT b FROM t2, t3 GROUP BY b HAVING b != 3 );
SELECT * FROM t1 WHERE EXISTS ( SELECT b FROM t2, t3 GROUP BY b HAVING b != 3 );
DROP TABLE t1,t2,t3;
CREATE TABLE t1 (
pk int auto_increment primary key,
col_int_key int(11),
key col_int_key (col_int_key),col_varchar_key varchar(128),
key (col_varchar_key)
) engine=innodb;
EXPLAIN
SELECT 1 FROM t1 AS alias1
WHERE EXISTS ( SELECT SQ2_alias1 . col_int_key AS SQ2_field1
FROM ( t1 AS SQ2_alias1 RIGHT OUTER JOIN
t1 AS SQ2_alias2 ON (SQ2_alias2 . col_int_key = SQ2_alias1 . col_int_key )
)
GROUP BY SQ2_field1
HAVING SQ2_alias1 . col_int_key >= 7
);
SELECT 1 FROM t1 AS alias1
WHERE EXISTS ( SELECT SQ2_alias1 . col_int_key AS SQ2_field1
FROM ( t1 AS SQ2_alias1 RIGHT OUTER JOIN
t1 AS SQ2_alias2 ON (SQ2_alias2 . col_int_key = SQ2_alias1 . col_int_key )
)
GROUP BY SQ2_field1
HAVING SQ2_alias1 . col_int_key >= 7
);
drop table t1;
set optimizer_switch=@subselect_innodb_tmp;
--echo #
--echo # MDEV-9635:Server crashes in part_of_refkey or assertion
--echo # `!created && key_to_save < (int)s->keys' failed in
--echo # TABLE::use_index(int) or with join_cache_level>2
--echo #
SET join_cache_level=3;
CREATE TABLE t1 (f1 VARCHAR(1024)) ENGINE=InnoDB;
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
CREATE TABLE t2 (f2 VARCHAR(4)) ENGINE=InnoDB;
INSERT INTO t2 VALUES ('foo'),('bar');
SELECT * FROM v1, t2 WHERE ( f1, f2 ) IN ( SELECT f1, f1 FROM t1 );
set join_cache_level = default;
drop view v1;
drop table t1,t2;
--echo #
--echo # MDEV-10693: cost-based choice between materialization and in-to-exists
--echo # for a subquery from the expression used in ref access
--echo #
--source include/have_innodb.inc
CREATE TABLE t1 (i1 INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1),(2);
CREATE TABLE t2 (i2 INT) ENGINE=InnoDB;
CREATE TABLE t3 (i3 INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t3 VALUES (3);
SELECT * FROM t1
WHERE NULL IN ( SELECT i2 FROM t2
WHERE i1 IN ( i2 IN ( SELECT i3 FROM t3 ) ) AND i2 = 2 );
DROP TABLE t1,t2,t3;
--echo #
--echo # MDEV-6041: ORDER BY+subqueries: subquery_table.key=outer_table.col is not recongized as binding
--echo #
create table t1(a int) engine=innodb;
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2(
id int primary key,
key1 int,
col1 int,
key(key1)
) engine=innodb;
insert into t2
select
A.a + B.a*10 + C.a*100 + D.a* 1000,
A.a + 10*B.a,
123456
from t1 A, t1 B, t1 C, t1 D;
--echo # Table tsubq:
--echo # - must use 'ref' (not 'index'), and must not use 'Using filesort'
--echo # - shows a bad estimate for 'rows' (but I'm not sure if one can do better w/o histograms)
explain select
(SELECT
concat(id, '-', key1, '-', col1)
FROM t2
WHERE t2.key1 = t1.a
ORDER BY t2.id ASC LIMIT 1)
from
t1;
--echo #
--echo # MDEV-6081: ORDER BY+ref(const): selectivity is very incorrect (MySQL Bug#14338686)
--echo #
alter table t2 add key2 int;
update t2 set key2=key1;
alter table t2 add key(key2);
analyze table t2;
flush tables;
--echo # Table tsubq must use 'ref' + Using filesort (not 'index' w/o filesort)
--replace_column 9 #
explain select
(SELECT
concat(id, '-', key1, '-', col1)
FROM t2
WHERE t2.key1 = t1.a
ORDER BY t2.key2 ASC LIMIT 1)
from
t1;
drop table t1,t2;
--echo #
--echo # mdev-12931: semi-join in ON expression of STRAIGHT_JOIN
--echo # joining a base table and a mergeable derived table
--echo #
CREATE TABLE t1 (f1 int) ENGINE=InnoDB;
INSERT INTO t1 VALUES (3),(2);
CREATE TABLE t2 (f2 int) ENGINE=InnoDB;
INSERT INTO t2 VALUES (1),(4);
CREATE TABLE t3 (f3 int) ENGINE=InnoDB;
INSERT INTO t3 VALUES (5),(6);
CREATE TABLE t4 (f4 int) ENGINE=InnoDB;
INSERT INTO t4 VALUES (1),(8);
SELECT *
FROM t1
INNER JOIN
( t2 STRAIGHT_JOIN ( SELECT * FROM t3 ) AS sq
ON ( 1 IN ( SELECT f4 FROM t4 ) ) )
ON ( f1 >= f2 );
EXPLAIN EXTENDED
SELECT *
FROM t1
INNER JOIN
( t2 STRAIGHT_JOIN ( SELECT * FROM t3 ) AS sq
ON ( 1 IN ( SELECT f4 FROM t4 ) ) )
ON ( f1 >= f2 );
DROP TABLE t1,t2,t3,t4;
--echo #
--echo # MDEV-23535: SIGSEGV, SIGABRT and SIGILL in typeinfo for Item_func_set_collation (on optimized builds)
--echo #
set @save_character_set_connection=@@character_set_connection;
set character_set_connection='utf8';
CREATE TABLE t1(a DATETIME, b VARCHAR(50)) ENGINE=INNODB;
INSERT INTO t1 VALUES ('2019-03-10 02:55:05', '2019-03-10 02:55:05');
CREATE TABLE t2(a VARCHAR(50)) ENGINE=INNODB;
INSERT INTO t2 VALUES ('2019-03-10 02:55:05');
SELECT * FROM t1 WHERE (SELECT 1,CONCAT(a) FROM t1) = (SELECT 1,CONCAT(a) FROM t2);
DROP TABLE t1,t2;
set character_set_connection=@save_character_set_connection;