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|
#
# MDEV-30164 System variable for default collations
#
SET @@character_set_collations= ' utf8mb3 = utf8mb3_bin , LATIN1 = LATIN1_BIN ';
SELECT @@character_set_collations;
@@character_set_collations
latin1=latin1_bin,utf8mb3=utf8mb3_bin
SET @@character_set_collations='';
SELECT @@character_set_collations;
@@character_set_collations
SET @@character_set_collations= ',,, utf8mb3 = utf8mb3_bin , , LATIN1 = LATIN1_BIN ,,';
SELECT @@character_set_collations;
@@character_set_collations
latin1=latin1_bin,utf8mb3=utf8mb3_bin
SET @@character_set_collations='';
SELECT @@character_set_collations;
@@character_set_collations
SET @@character_set_collations= 'utf8mb3 = utf8mb3_bin LATIN1 = LATIN1_BIN ';
ERROR 42000: Variable 'character_set_collations' can't be set to the value of 'utf8mb3 = utf8mb3_bin LATIN1 = LATIN1_BIN '
SELECT @@character_set_collations;
@@character_set_collations
SET @@character_set_collations= ' 123 ';
ERROR 42000: Variable 'character_set_collations' can't be set to the value of ' 123 '
SELECT @@character_set_collations;
@@character_set_collations
SET @@character_set_collations= ' utf8mb3 ';
ERROR 42000: Variable 'character_set_collations' can't be set to the value of ' utf8mb3 '
SELECT @@character_set_collations;
@@character_set_collations
SET @@character_set_collations= ' utf8mb3 = ';
ERROR 42000: Variable 'character_set_collations' can't be set to the value of ' utf8mb3 = '
SELECT @@character_set_collations;
@@character_set_collations
SET @@character_set_collations= ' utf8mb3 = 123 ';
ERROR 42000: Variable 'character_set_collations' can't be set to the value of ' utf8mb3 = 123 '
SELECT @@character_set_collations;
@@character_set_collations
SET @@character_set_collations='utf8mb3=utf8mb3_bin';
SELECT @@character_set_collations;
@@character_set_collations
utf8mb3=utf8mb3_bin
SET @@character_set_collations='';
SET @@character_set_collations='utf8mb3=utf8mb4_general_ci';
ERROR 42000: COLLATION 'utf8mb4_general_ci' is not valid for CHARACTER SET 'utf8mb3'
SELECT @@character_set_collations;
@@character_set_collations
SET @@character_set_collations='utf8mb4=utf8mb3_general_ci';
ERROR 42000: COLLATION 'utf8mb3_general_ci' is not valid for CHARACTER SET 'utf8mb4'
SELECT @@character_set_collations;
@@character_set_collations
SET @@character_set_collations='utf8mb3=utf8mb3_general_ci';
SELECT @@character_set_collations;
@@character_set_collations
utf8mb3=utf8mb3_general_ci
SET @@character_set_collations='utf8mb4=utf8mb4_general_ci,latin1=latin1_bin';
SELECT @@character_set_collations;
@@character_set_collations
latin1=latin1_bin,utf8mb4=utf8mb4_general_ci
SET @@character_set_collations='utf8mb4=uca1400_ai_ci,latin1=uca1400_ai_ci';
ERROR 42000: COLLATION 'uca1400_ai_ci' is not valid for CHARACTER SET 'latin1'
SELECT @@character_set_collations;
@@character_set_collations
latin1=latin1_bin,utf8mb4=utf8mb4_general_ci
SELECT @@character_set_collations RLIKE 'utf8mb4=utf8mb4_general_ci' AS expect_true;
expect_true
1
SET @@character_set_collations='utf8mb4=uca1400_ai_ci';
SELECT @@character_set_collations;
@@character_set_collations
utf8mb4=utf8mb4_uca1400_ai_ci
SET NAMES utf8mb4;
SELECT @@collation_connection;
@@collation_connection
utf8mb4_uca1400_ai_ci
SELECT collation('literal');
collation('literal')
utf8mb4_uca1400_ai_ci
EXECUTE IMMEDIATE 'SELECT COLLATION(?)' USING 'literal';
COLLATION(?)
utf8mb4_uca1400_ai_ci
CREATE VIEW v1 AS SELECT 'literal', collation('literal') as cl;
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 'literal' AS `literal`,collation('literal') AS `cl` utf8mb4 utf8mb4_uca1400_ai_ci
SELECT * FROM v1;
literal cl
literal utf8mb4_uca1400_ai_ci
DROP VIEW v1;
SET NAMES utf8mb4 COLLATE utf8mb4_general_ci;
CREATE TABLE t1 (a TEXT CHARACTER SET utf8mb4);
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` text DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
DROP TABLE t1;
CREATE TABLE t1 (a TEXT CHARACTER SET utf8mb4 COLLATE DEFAULT);
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` text DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
DROP TABLE t1;
CREATE TABLE t1 (a TEXT COLLATE DEFAULT) CHARACTER SET utf8mb4;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` text DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
DROP TABLE t1;
CREATE TABLE t1 (a TEXT) CHARACTER SET utf8mb4;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` text DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
DROP TABLE t1;
CREATE DATABASE db1 CHARACTER SET utf8mb4;
SHOW CREATE DATABASE db1;
Database Create Database
db1 CREATE DATABASE `db1` /*!40100 DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_uca1400_ai_ci */
DROP DATABASE db1;
SET NAMES utf8mb4 COLLATE utf8mb4_general_ci;
SELECT
@@collation_connection AS conn,
COLLATION('a') AS lit,
COLLATION(CONCAT(1)) AS num,
COLLATION(CAST(123 AS CHAR)) AS casti,
COLLATION(_utf8mb4'a') AS litu,
COLLATION(_utf8mb4 0x62) AS lituh,
COLLATION(_utf8mb4 X'63') AS lituhs,
COLLATION(CAST(123 AS CHAR CHARACTER SET utf8mb4)) AS castic,
COLLATION(CHAR(0x61 USING utf8mb4)) AS chr,
COLLATION(CONVERT('a' USING utf8mb4)) AS conv;;
conn utf8mb4_general_ci
lit utf8mb4_general_ci
num utf8mb4_general_ci
casti utf8mb4_general_ci
litu utf8mb4_uca1400_ai_ci
lituh utf8mb4_uca1400_ai_ci
lituhs utf8mb4_uca1400_ai_ci
castic utf8mb4_uca1400_ai_ci
chr utf8mb4_uca1400_ai_ci
conv utf8mb4_uca1400_ai_ci
SET NAMES utf8mb4;
SELECT
@@collation_connection AS conn,
COLLATION('a') AS lit,
COLLATION(CONCAT(1)) AS num,
COLLATION(CAST(123 AS CHAR)) AS casti,
COLLATION(_utf8mb4'a') AS litu,
COLLATION(_utf8mb4 0x62) AS lituh,
COLLATION(_utf8mb4 X'63') AS lituhs,
COLLATION(CAST(123 AS CHAR CHARACTER SET utf8mb4)) AS castic,
COLLATION(CHAR(0x61 USING utf8mb4)) AS chr,
COLLATION(CONVERT('a' USING utf8mb4)) AS conv;;
conn utf8mb4_uca1400_ai_ci
lit utf8mb4_uca1400_ai_ci
num utf8mb4_uca1400_ai_ci
casti utf8mb4_uca1400_ai_ci
litu utf8mb4_uca1400_ai_ci
lituh utf8mb4_uca1400_ai_ci
lituhs utf8mb4_uca1400_ai_ci
castic utf8mb4_uca1400_ai_ci
chr utf8mb4_uca1400_ai_ci
conv utf8mb4_uca1400_ai_ci
SET character_set_collations='latin1=latin1_bin,utf8mb4=uca1400_ai_ci';
SHOW CHARACTER SET LIKE 'latin1';
Charset Description Default collation Maxlen
latin1 cp1252 West European latin1_bin 1
SELECT * FROM INFORMATION_SCHEMA.CHARACTER_SETS
WHERE CHARACTER_SET_NAME='latin1';
CHARACTER_SET_NAME DEFAULT_COLLATE_NAME DESCRIPTION MAXLEN
latin1 latin1_bin cp1252 West European 1
SHOW COLLATION LIKE 'latin1%';
Collation Charset Id Default Compiled Sortlen
latin1_german1_ci latin1 5 Yes 1
latin1_swedish_ci latin1 8 Yes 1
latin1_danish_ci latin1 15 Yes 1
latin1_german2_ci latin1 31 Yes 2
latin1_bin latin1 47 Yes Yes 1
latin1_general_ci latin1 48 Yes 1
latin1_general_cs latin1 49 Yes 1
latin1_spanish_ci latin1 94 Yes 1
latin1_swedish_nopad_ci latin1 1032 Yes 1
latin1_nopad_bin latin1 1071 Yes 1
SELECT COLLATION_NAME, IS_DEFAULT
FROM INFORMATION_SCHEMA.COLLATIONS
WHERE CHARACTER_SET_NAME LIKE 'latin1%';
COLLATION_NAME IS_DEFAULT
latin1_german1_ci
latin1_swedish_ci
latin1_danish_ci
latin1_german2_ci
latin1_bin Yes
latin1_general_ci
latin1_general_cs
latin1_spanish_ci
latin1_swedish_nopad_ci
latin1_nopad_bin
SELECT COLLATION_NAME, FULL_COLLATION_NAME, IS_DEFAULT
FROM INFORMATION_SCHEMA.COLLATION_CHARACTER_SET_APPLICABILITY
WHERE COLLATION_NAME LIKE 'latin1%';
COLLATION_NAME FULL_COLLATION_NAME IS_DEFAULT
latin1_german1_ci latin1_german1_ci
latin1_swedish_ci latin1_swedish_ci
latin1_danish_ci latin1_danish_ci
latin1_german2_ci latin1_german2_ci
latin1_bin latin1_bin Yes
latin1_general_ci latin1_general_ci
latin1_general_cs latin1_general_cs
latin1_spanish_ci latin1_spanish_ci
latin1_swedish_nopad_ci latin1_swedish_nopad_ci
latin1_nopad_bin latin1_nopad_bin
SHOW CHARACTER SET LIKE 'utf8mb4';
Charset Description Default collation Maxlen
utf8mb4 UTF-8 Unicode utf8mb4_uca1400_ai_ci 4
SELECT * FROM INFORMATION_SCHEMA.CHARACTER_SETS
WHERE CHARACTER_SET_NAME='utf8mb4';
CHARACTER_SET_NAME DEFAULT_COLLATE_NAME DESCRIPTION MAXLEN
utf8mb4 utf8mb4_uca1400_ai_ci UTF-8 Unicode 4
SHOW COLLATION LIKE '%uca1400_ai_ci%';
Collation Charset Id Default Compiled Sortlen
uca1400_ai_ci NULL NULL NULL Yes 8
SELECT COLLATION_NAME, IS_DEFAULT
FROM INFORMATION_SCHEMA.COLLATIONS
WHERE COLLATION_NAME LIKE '%uca1400_ai_ci%';
COLLATION_NAME IS_DEFAULT
uca1400_ai_ci NULL
SELECT COLLATION_NAME, FULL_COLLATION_NAME, IS_DEFAULT
FROM INFORMATION_SCHEMA.COLLATION_CHARACTER_SET_APPLICABILITY
WHERE COLLATION_NAME LIKE '%uca1400_ai_ci%';
COLLATION_NAME FULL_COLLATION_NAME IS_DEFAULT
uca1400_ai_ci utf8mb3_uca1400_ai_ci
uca1400_ai_ci ucs2_uca1400_ai_ci
uca1400_ai_ci utf8mb4_uca1400_ai_ci Yes
uca1400_ai_ci utf16_uca1400_ai_ci
uca1400_ai_ci utf32_uca1400_ai_ci
SET @@character_set_collations='';
PREPARE stmt FROM 'SELECT '
'COLLATION(CAST("x" AS CHAR CHARACTER SET utf8mb3)) AS a, '
'COLLATION(_utf8mb3"x") AS b';
EXECUTE stmt;
a b
utf8mb3_general_ci utf8mb3_general_ci
SET @@character_set_collations='utf8mb3=utf8mb3_bin';
EXECUTE stmt;
a b
utf8mb3_bin utf8mb3_bin
SET @@character_set_collations='utf8mb3=utf8mb3_bin';
PREPARE stmt FROM 'SELECT '
'COLLATION(CAST("x" AS CHAR CHARACTER SET utf8mb3)) AS a, '
'COLLATION(_utf8mb3"x") AS b';
EXECUTE stmt;
a b
utf8mb3_bin utf8mb3_bin
SET @@character_set_collations=DEFAULT;
EXECUTE stmt;
a b
utf8mb3_uca1400_ai_ci utf8mb3_uca1400_ai_ci
SET NAMES utf8mb3;
SET @@character_set_collations='';
PREPARE stmt FROM 'CREATE TABLE t1 '
'(a TEXT CHARACTER SET utf8mb3 COLLATE DEFAULT COLLATE utf8mb3_general_ci)';
EXECUTE stmt;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` text CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
DROP TABLE t1;
SET @@character_set_collations='utf8mb3=utf8mb3_bin';
EXECUTE stmt;
ERROR HY000: Conflicting declarations: 'COLLATE utf8mb3_bin' and 'COLLATE utf8mb3_general_ci'
SET @@character_set_collations='';
EXECUTE stmt;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` text CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
DROP TABLE t1;
|
