MDEV-13335 UTF8 escape wildcard LIKE match has different behavior in different collations

The fix for MDEV-17064 addressed this problem. Adding tests only.

mysql-test/include/ctype_like_escape.inc

@@ -16,3 +16,9 @@ select c1 as c1u from t1 where c1 like 'ab\_def';
 # should return ab_def
 select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 drop table t1;
+
+#
+# MDEV-13335 UTF8 escape wildcard LIKE match has different behavior in different collations
+#
+SELECT @@collation_connection;
+SELECT '\%b' LIKE '%\%';

mysql-test/r/ctype_big5.result

@@ -220,6 +220,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+big5_chinese_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);
@@ -447,6 +453,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+big5_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);

mysql-test/r/ctype_euckr.result

@@ -220,6 +220,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+euckr_korean_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);
@@ -367,6 +373,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+euckr_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);

mysql-test/r/ctype_gb2312.result

@@ -220,6 +220,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+gb2312_chinese_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);
@@ -448,6 +454,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+gb2312_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);

mysql-test/r/ctype_gbk.result

@@ -220,6 +220,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+gbk_chinese_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);
@@ -448,6 +454,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+gbk_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);

mysql-test/r/ctype_latin1.result

@@ -506,6 +506,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+latin1_swedish_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 #
 # MDEV-4842 STR_TO_DATE does not work with UCS2/UTF16/UTF32
 #
@@ -621,6 +627,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+latin1_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE „a (a int);
 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 '„a (a int)' at line 1
 SELECT '„a' as str;

mysql-test/r/ctype_sjis.result

@@ -189,6 +189,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+sjis_japanese_ci
+SELECT '\%b' LIKE '%\%';
+'<27>_%b' LIKE '%<25>_%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);
@@ -355,6 +361,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+sjis_bin
+SELECT '\%b' LIKE '%\%';
+'<27>_%b' LIKE '%<25>_%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);

mysql-test/r/ctype_tis620.result

@@ -3033,6 +3033,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+tis620_thai_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 drop table if exists t1;
 create table t1 select repeat('a',10) as c1;
 delete from t1;
@@ -3331,6 +3337,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+tis620_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 #
 # MDEV-7149 Constant condition propagation erroneously applied for LIKE
 #

mysql-test/r/ctype_uca.result

@@ -6233,6 +6233,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf8_unicode_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 "BEGIN ctype_german.inc"
 drop table if exists t1;
 create table t1 as select repeat(' ', 64) as s1;

mysql-test/r/ctype_ucs.result

@@ -839,6 +839,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+ucs2_general_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 "BEGIN ctype_german.inc"
 drop table if exists t1;
 create table t1 as select repeat(' ', 64) as s1;
@@ -1100,6 +1106,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+ucs2_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);

mysql-test/r/ctype_ujis.result

@@ -2327,6 +2327,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+ujis_japanese_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);
@@ -2474,6 +2480,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+ujis_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 AS
 SELECT 10 AS a, REPEAT('a',20) AS b, REPEAT('a',8) AS c, REPEAT('a',8) AS d;
 ALTER TABLE t1 ADD PRIMARY KEY(a), ADD KEY(b);

mysql-test/r/ctype_utf16.result

@@ -669,6 +669,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf16_general_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 SET NAMES latin1;
 SET collation_connection='utf16_bin';
 create table t1 select repeat('a',4000) a;
@@ -806,6 +812,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf16_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 select hex(substr(_utf16 0x00e400e50068,1));
 hex(substr(_utf16 0x00e400e50068,1))
 00E400E50068

mysql-test/r/ctype_utf16_uca.result

@@ -2952,6 +2952,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf16_unicode_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 "BEGIN ctype_german.inc"
 drop table if exists t1;
 create table t1 as select repeat(' ', 64) as s1;

mysql-test/r/ctype_utf16le.result

@@ -713,6 +713,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf16le_general_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 SET NAMES utf8, collation_connection='utf16le_bin';
 create table t1 select repeat('a',4000) a;
 delete from t1;
@@ -849,6 +855,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf16le_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 #
 # Bug#10344 Some string functions fail for UCS2
 #

mysql-test/r/ctype_utf32.result

@@ -668,6 +668,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf32_general_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 SET NAMES latin1;
 SET collation_connection='utf32_bin';
 create table t1 select repeat('a',4000) a;
@@ -805,6 +811,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf32_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 select hex(substr(_utf32 0x000000e4000000e500000068,1));
 hex(substr(_utf32 0x000000e4000000e500000068,1))
 000000E4000000E500000068

mysql-test/r/ctype_utf32_uca.result

@@ -2952,6 +2952,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf32_unicode_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 "BEGIN ctype_german.inc"
 drop table if exists t1;
 create table t1 as select repeat(' ', 64) as s1;

mysql-test/r/ctype_utf8.result

@@ -1032,6 +1032,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf8_general_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 "BEGIN ctype_german.inc"
 drop table if exists t1;
 create table t1 as select repeat(' ', 64) as s1;
@@ -1263,6 +1269,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf8_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 (
 user varchar(255) NOT NULL default ''
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1;

mysql-test/r/ctype_utf8mb4.result

@@ -1032,6 +1032,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_general_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 "BEGIN ctype_german.inc"
 drop table if exists t1;
 create table t1 as select repeat(' ', 64) as s1;
@@ -1284,6 +1290,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 (
 user varchar(255) NOT NULL default ''
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1;

mysql-test/r/ctype_utf8mb4_heap.result

@@ -971,6 +971,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_general_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 "BEGIN ctype_german.inc"
 drop table if exists t1;
 create table t1 as select repeat(' ', 64) as s1;
@@ -1183,6 +1189,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 (
 user varchar(255) NOT NULL default ''
 ) ENGINE=heap DEFAULT CHARSET=latin1;

mysql-test/r/ctype_utf8mb4_innodb.result

@@ -1032,6 +1032,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_general_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 "BEGIN ctype_german.inc"
 drop table if exists t1;
 create table t1 as select repeat(' ', 64) as s1;
@@ -1244,6 +1250,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 (
 user varchar(255) NOT NULL default ''
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1;

mysql-test/r/ctype_utf8mb4_myisam.result

@@ -1032,6 +1032,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_general_ci
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 "BEGIN ctype_german.inc"
 drop table if exists t1;
 create table t1 as select repeat(' ', 64) as s1;
@@ -1244,6 +1250,12 @@ select c1 as c2h from t1 where c1 like 'ab#_def' escape '#';
 c2h
 ab_def
 drop table t1;
+SELECT @@collation_connection;
+@@collation_connection
+utf8mb4_bin
+SELECT '\%b' LIKE '%\%';
+'\%b' LIKE '%\%'
+0
 CREATE TABLE t1 (
 user varchar(255) NOT NULL default ''
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1;