mariadb/mysql-test/t/func_like.test

#
# Test of like
#

--disable_warnings
drop table if exists t1;
--enable_warnings

create table t1 (a varchar(10), key(a));
insert into t1 values ("a"),("abc"),("abcd"),("hello"),("test");
explain extended select * from t1 where a like 'abc%';
explain extended select * from t1 where a like concat('abc','%');
select * from t1 where a like "abc%";
select * from t1 where a like concat("abc","%");
select * from t1 where a like "ABC%";
select * from t1 where a like "test%";
select * from t1 where a like "te_t";

#
# The following will test the Turbo Boyer-Moore code
#
select * from t1 where a like "%a%";
select * from t1 where a like "%abcd%";
select * from t1 where a like "%abc\d%";

drop table t1;

create table t1 (a varchar(10), key(a));

#
# Bug #2231
#
insert into t1 values ('a'), ('a\\b');
select * from t1 where a like 'a\\%' escape '#';
select * from t1 where a like 'a\\%' escape '#' and a like 'a\\\\b';

#
# Bug #4200: Prepared statement parameter as argument to ESCAPE
#
prepare stmt1 from 'select * from t1 where a like \'a\\%\' escape ?';
set @esc='#';
execute stmt1 using @esc;  
deallocate prepare stmt1;

drop table t1;

#
# Bug #2885: like and datetime
#

create table t1 (a datetime);
insert into t1 values ('2004-03-11 12:00:21');
select * from t1 where a like '2004-03-11 12:00:21';
drop table t1;

#
# Test like with non-default character set
#

SET NAMES koi8r;

CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET koi8r);

INSERT INTO t1 VALUES ('<27><><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD>');
INSERT INTO t1 VALUES ('<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>');
INSERT INTO t1 VALUES ('<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>');
INSERT INTO t1 VALUES ('<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>'),('<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>');

SELECT * FROM t1 WHERE a LIKE '%<25><><EFBFBD><EFBFBD>%';
SELECT * FROM t1 WHERE a LIKE '%<25><><EFBFBD>%';
SELECT * FROM t1 WHERE a LIKE '<27><><EFBFBD><EFBFBD>%';

DROP TABLE t1;

# Bug #2547 Strange "like" behaviour in tables with default charset=cp1250
# Test like with non-default character set using TurboBM
#
SET NAMES cp1250;
CREATE TABLE t1 (a varchar(250) NOT NULL) DEFAULT CHARACTER SET=cp1250;
INSERT INTO t1 VALUES
('Techni Tapes Sp. z o.o.'),
('Pojazdy Szynowe PESA Bydgoszcz SA Holding'),
('AKAPESTER 1 P.P.H.U.'),
('Pojazdy Szynowe PESA Bydgoszcz S A Holding'),
('PPUH PESKA-I Maria Struniarska');

select * from t1 where a like '%PESA%';
select * from t1 where a like '%PESA %';
select * from t1 where a like '%PES%';
select * from t1 where a like '%PESKA%';
select * from t1 where a like '%ESKA%';
DROP TABLE t1;

#
# LIKE crashed for binary collations in some cases
#
select _cp866'aaaaaaaaa' like _cp866'%aaaa%' collate cp866_bin;

#
# Check 8bit escape character
#
set names koi8r;
select 'andre%' like 'andre<72>%' escape '<27>';

# Check 8bit escape character with charset conversion:
# For "a LIKE b ESCAPE c" expressions,
# escape character is converted into the operation character set,
# which is result of aggregation  of character sets of "a" and "b".
# "c" itself doesn't take part in aggregation, because its collation
# doesn't matter, escape character is always compared binary.
# In the example below, escape character is converted from koi8r into cp1251:
#
select _cp1251'andre%' like convert('andre<72>%' using cp1251)  escape '<27>';


--echo End of 4.1 tests


--echo #
--echo # Bug #54575: crash when joining tables with unique set column
--echo #
CREATE TABLE t1(a SET('a') NOT NULL, UNIQUE KEY(a));
CREATE TABLE t2(b INT PRIMARY KEY);
INSERT INTO t1 VALUES ();
INSERT INTO t2 VALUES (1), (2), (3);
SELECT 1 FROM t2 JOIN t1 ON 1 LIKE a GROUP BY a;
DROP TABLE t1, t2;

--echo #
--echo # Bug#59149 valgrind warnings with "like .. escape .." function
--echo #
--error ER_WRONG_ARGUMENTS
SELECT '' LIKE '1' ESCAPE COUNT(1);

--echo End of 5.1 tests

--echo #
--echo # Start of 10.0 tests
--echo #

--echo #
--echo # MDEV-5445 Server crashes in Item_func_like::fix_fields on LIKE ExtractValue(..)
--echo #
SELECT 'a' LIKE REPEAT('',0);
SELECT 'a' LIKE EXTRACTVALUE('bar','qux');