- 关于 TiDB
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- SQL
- 与 MySQL 兼容性对比
- SQL 语言结构
- 数据类型
- 函数与操作符
- SQL 语句
ADD COLUMN
ADD INDEX
ADMIN
ADMIN CANCEL DDL
ADMIN CHECKSUM TABLE
ADMIN CHECK [TABLE|INDEX]
ADMIN SHOW DDL [JOBS|QUERIES]
ALTER DATABASE
ALTER TABLE
ALTER USER
ANALYZE TABLE
BEGIN
CHANGE COLUMN
COMMIT
CREATE DATABASE
CREATE INDEX
CREATE TABLE LIKE
CREATE TABLE
CREATE USER
DEALLOCATE
DELETE
DESC
DESCRIBE
DO
DROP COLUMN
DROP DATABASE
DROP INDEX
DROP TABLE
DROP USER
EXECUTE
EXPLAIN ANALYZE
EXPLAIN
FLUSH PRIVILEGES
FLUSH STATUS
FLUSH TABLES
GRANT <privileges>
INSERT
KILL [TIDB]
LOAD DATA
LOAD STATS
MODIFY COLUMN
PREPARE
RENAME INDEX
RENAME TABLE
REPLACE
REVOKE <privileges>
ROLLBACK
SELECT
SET [NAMES|CHARACTER SET]
SET PASSWORD
SET TRANSACTION
SET [GLOBAL|SESSION] <variable>
SHOW CHARACTER SET
SHOW COLLATION
SHOW [FULL] COLUMNS FROM
SHOW CREATE TABLE
SHOW DATABASES
SHOW ENGINES
SHOW ERRORS
SHOW [FULL] FIELDS FROM
SHOW GRANTS
SHOW INDEXES [FROM|IN]
SHOW INDEX [FROM|IN]
SHOW KEYS [FROM|IN]
SHOW PRIVILEGES
SHOW [FULL] PROCESSSLIST
SHOW SCHEMAS
SHOW STATUS
SHOW [FULL] TABLES
SHOW TABLE STATUS
SHOW [GLOBAL|SESSION] VARIABLES
SHOW WARNINGS
START TRANSACTION
TRACE
TRUNCATE
UPDATE
USE
- 约束
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重要
你正在查看 TiDB 数据库的较旧版本 (TiDB v2.1) 的文档。
如无特殊需求,建议使用 TiDB 数据库的最新 LTS 版本。
SHOW COLLATION
SHOW COLLATION
语句用于提供一个静态的排序规则列表,确保与 MySQL 客户端库的兼容性。
注意: TiDB 目前仅支持二进制排序规则。
语法图
ShowStmt:
ShowTargetFilterable:
示例
mysql> SHOW COLLATION;
+--------------------------+----------+------+---------+----------+---------+
| Collation | Charset | Id | Default | Compiled | Sortlen |
+--------------------------+----------+------+---------+----------+---------+
| big5_chinese_ci | big5 | 1 | Yes | Yes | 1 |
| latin2_czech_cs | latin2 | 2 | | Yes | 1 |
| dec8_swedish_ci | dec8 | 3 | Yes | Yes | 1 |
| cp850_general_ci | cp850 | 4 | Yes | Yes | 1 |
| latin1_german1_ci | latin1 | 5 | | Yes | 1 |
| hp8_english_ci | hp8 | 6 | Yes | Yes | 1 |
| koi8r_general_ci | koi8r | 7 | Yes | Yes | 1 |
| latin1_swedish_ci | latin1 | 8 | Yes | Yes | 1 |
| latin2_general_ci | latin2 | 9 | Yes | Yes | 1 |
| swe7_swedish_ci | swe7 | 10 | Yes | Yes | 1 |
| ascii_general_ci | ascii | 11 | Yes | Yes | 1 |
| ujis_japanese_ci | ujis | 12 | Yes | Yes | 1 |
| sjis_japanese_ci | sjis | 13 | Yes | Yes | 1 |
| cp1251_bulgarian_ci | cp1251 | 14 | | Yes | 1 |
| latin1_danish_ci | latin1 | 15 | | Yes | 1 |
| hebrew_general_ci | hebrew | 16 | Yes | Yes | 1 |
| tis620_thai_ci | tis620 | 18 | Yes | Yes | 1 |
| euckr_korean_ci | euckr | 19 | Yes | Yes | 1 |
| latin7_estonian_cs | latin7 | 20 | | Yes | 1 |
| latin2_hungarian_ci | latin2 | 21 | | Yes | 1 |
| koi8u_general_ci | koi8u | 22 | Yes | Yes | 1 |
| cp1251_ukrainian_ci | cp1251 | 23 | | Yes | 1 |
| gb2312_chinese_ci | gb2312 | 24 | Yes | Yes | 1 |
| greek_general_ci | greek | 25 | Yes | Yes | 1 |
| cp1250_general_ci | cp1250 | 26 | Yes | Yes | 1 |
| latin2_croatian_ci | latin2 | 27 | | Yes | 1 |
| gbk_chinese_ci | gbk | 28 | Yes | Yes | 1 |
| cp1257_lithuanian_ci | cp1257 | 29 | | Yes | 1 |
| latin5_turkish_ci | latin5 | 30 | Yes | Yes | 1 |
| latin1_german2_ci | latin1 | 31 | | Yes | 1 |
| armscii8_general_ci | armscii8 | 32 | Yes | Yes | 1 |
| utf8_general_ci | utf8 | 33 | Yes | Yes | 1 |
| cp1250_czech_cs | cp1250 | 34 | | Yes | 1 |
| ucs2_general_ci | ucs2 | 35 | Yes | Yes | 1 |
| cp866_general_ci | cp866 | 36 | Yes | Yes | 1 |
| keybcs2_general_ci | keybcs2 | 37 | Yes | Yes | 1 |
| macce_general_ci | macce | 38 | Yes | Yes | 1 |
| macroman_general_ci | macroman | 39 | Yes | Yes | 1 |
| cp852_general_ci | cp852 | 40 | Yes | Yes | 1 |
| latin7_general_ci | latin7 | 41 | Yes | Yes | 1 |
| latin7_general_cs | latin7 | 42 | | Yes | 1 |
| macce_bin | macce | 43 | | Yes | 1 |
| cp1250_croatian_ci | cp1250 | 44 | | Yes | 1 |
| utf8mb4_general_ci | utf8mb4 | 45 | Yes | Yes | 1 |
| utf8mb4_bin | utf8mb4 | 46 | | Yes | 1 |
| latin1_bin | latin1 | 47 | | Yes | 1 |
| latin1_general_ci | latin1 | 48 | | Yes | 1 |
| latin1_general_cs | latin1 | 49 | | Yes | 1 |
| cp1251_bin | cp1251 | 50 | | Yes | 1 |
| cp1251_general_ci | cp1251 | 51 | Yes | Yes | 1 |
| cp1251_general_cs | cp1251 | 52 | | Yes | 1 |
| macroman_bin | macroman | 53 | | Yes | 1 |
| utf16_general_ci | utf16 | 54 | Yes | Yes | 1 |
| utf16_bin | utf16 | 55 | | Yes | 1 |
| utf16le_general_ci | utf16le | 56 | Yes | Yes | 1 |
| cp1256_general_ci | cp1256 | 57 | Yes | Yes | 1 |
| cp1257_bin | cp1257 | 58 | | Yes | 1 |
| cp1257_general_ci | cp1257 | 59 | Yes | Yes | 1 |
| utf32_general_ci | utf32 | 60 | Yes | Yes | 1 |
| utf32_bin | utf32 | 61 | | Yes | 1 |
| utf16le_bin | utf16le | 62 | | Yes | 1 |
| binary | binary | 63 | Yes | Yes | 1 |
| armscii8_bin | armscii8 | 64 | | Yes | 1 |
| ascii_bin | ascii | 65 | | Yes | 1 |
| cp1250_bin | cp1250 | 66 | | Yes | 1 |
| cp1256_bin | cp1256 | 67 | | Yes | 1 |
| cp866_bin | cp866 | 68 | | Yes | 1 |
| dec8_bin | dec8 | 69 | | Yes | 1 |
| greek_bin | greek | 70 | | Yes | 1 |
| hebrew_bin | hebrew | 71 | | Yes | 1 |
| hp8_bin | hp8 | 72 | | Yes | 1 |
| keybcs2_bin | keybcs2 | 73 | | Yes | 1 |
| koi8r_bin | koi8r | 74 | | Yes | 1 |
| koi8u_bin | koi8u | 75 | | Yes | 1 |
| latin2_bin | latin2 | 77 | | Yes | 1 |
| latin5_bin | latin5 | 78 | | Yes | 1 |
| latin7_bin | latin7 | 79 | | Yes | 1 |
| cp850_bin | cp850 | 80 | | Yes | 1 |
| cp852_bin | cp852 | 81 | | Yes | 1 |
| swe7_bin | swe7 | 82 | | Yes | 1 |
| utf8_bin | utf8 | 83 | | Yes | 1 |
| big5_bin | big5 | 84 | | Yes | 1 |
| euckr_bin | euckr | 85 | | Yes | 1 |
| gb2312_bin | gb2312 | 86 | | Yes | 1 |
| gbk_bin | gbk | 87 | | Yes | 1 |
| sjis_bin | sjis | 88 | | Yes | 1 |
| tis620_bin | tis620 | 89 | | Yes | 1 |
| ucs2_bin | ucs2 | 90 | | Yes | 1 |
| ujis_bin | ujis | 91 | | Yes | 1 |
| geostd8_general_ci | geostd8 | 92 | Yes | Yes | 1 |
| geostd8_bin | geostd8 | 93 | | Yes | 1 |
| latin1_spanish_ci | latin1 | 94 | | Yes | 1 |
| cp932_japanese_ci | cp932 | 95 | Yes | Yes | 1 |
| cp932_bin | cp932 | 96 | | Yes | 1 |
| eucjpms_japanese_ci | eucjpms | 97 | Yes | Yes | 1 |
| eucjpms_bin | eucjpms | 98 | | Yes | 1 |
| cp1250_polish_ci | cp1250 | 99 | | Yes | 1 |
| utf16_unicode_ci | utf16 | 101 | | Yes | 1 |
| utf16_icelandic_ci | utf16 | 102 | | Yes | 1 |
| utf16_latvian_ci | utf16 | 103 | | Yes | 1 |
| utf16_romanian_ci | utf16 | 104 | | Yes | 1 |
| utf16_slovenian_ci | utf16 | 105 | | Yes | 1 |
| utf16_polish_ci | utf16 | 106 | | Yes | 1 |
| utf16_estonian_ci | utf16 | 107 | | Yes | 1 |
| utf16_spanish_ci | utf16 | 108 | | Yes | 1 |
| utf16_swedish_ci | utf16 | 109 | | Yes | 1 |
| utf16_turkish_ci | utf16 | 110 | | Yes | 1 |
| utf16_czech_ci | utf16 | 111 | | Yes | 1 |
| utf16_danish_ci | utf16 | 112 | | Yes | 1 |
| utf16_lithuanian_ci | utf16 | 113 | | Yes | 1 |
| utf16_slovak_ci | utf16 | 114 | | Yes | 1 |
| utf16_spanish2_ci | utf16 | 115 | | Yes | 1 |
| utf16_roman_ci | utf16 | 116 | | Yes | 1 |
| utf16_persian_ci | utf16 | 117 | | Yes | 1 |
| utf16_esperanto_ci | utf16 | 118 | | Yes | 1 |
| utf16_hungarian_ci | utf16 | 119 | | Yes | 1 |
| utf16_sinhala_ci | utf16 | 120 | | Yes | 1 |
| utf16_german2_ci | utf16 | 121 | | Yes | 1 |
| utf16_croatian_ci | utf16 | 122 | | Yes | 1 |
| utf16_unicode_520_ci | utf16 | 123 | | Yes | 1 |
| utf16_vietnamese_ci | utf16 | 124 | | Yes | 1 |
| ucs2_unicode_ci | ucs2 | 128 | | Yes | 1 |
| ucs2_icelandic_ci | ucs2 | 129 | | Yes | 1 |
| ucs2_latvian_ci | ucs2 | 130 | | Yes | 1 |
| ucs2_romanian_ci | ucs2 | 131 | | Yes | 1 |
| ucs2_slovenian_ci | ucs2 | 132 | | Yes | 1 |
| ucs2_polish_ci | ucs2 | 133 | | Yes | 1 |
| ucs2_estonian_ci | ucs2 | 134 | | Yes | 1 |
| ucs2_spanish_ci | ucs2 | 135 | | Yes | 1 |
| ucs2_swedish_ci | ucs2 | 136 | | Yes | 1 |
| ucs2_turkish_ci | ucs2 | 137 | | Yes | 1 |
| ucs2_czech_ci | ucs2 | 138 | | Yes | 1 |
| ucs2_danish_ci | ucs2 | 139 | | Yes | 1 |
| ucs2_lithuanian_ci | ucs2 | 140 | | Yes | 1 |
| ucs2_slovak_ci | ucs2 | 141 | | Yes | 1 |
| ucs2_spanish2_ci | ucs2 | 142 | | Yes | 1 |
| ucs2_roman_ci | ucs2 | 143 | | Yes | 1 |
| ucs2_persian_ci | ucs2 | 144 | | Yes | 1 |
| ucs2_esperanto_ci | ucs2 | 145 | | Yes | 1 |
| ucs2_hungarian_ci | ucs2 | 146 | | Yes | 1 |
| ucs2_sinhala_ci | ucs2 | 147 | | Yes | 1 |
| ucs2_german2_ci | ucs2 | 148 | | Yes | 1 |
| ucs2_croatian_ci | ucs2 | 149 | | Yes | 1 |
| ucs2_unicode_520_ci | ucs2 | 150 | | Yes | 1 |
| ucs2_vietnamese_ci | ucs2 | 151 | | Yes | 1 |
| ucs2_general_mysql500_ci | ucs2 | 159 | | Yes | 1 |
| utf32_unicode_ci | utf32 | 160 | | Yes | 1 |
| utf32_icelandic_ci | utf32 | 161 | | Yes | 1 |
| utf32_latvian_ci | utf32 | 162 | | Yes | 1 |
| utf32_romanian_ci | utf32 | 163 | | Yes | 1 |
| utf32_slovenian_ci | utf32 | 164 | | Yes | 1 |
| utf32_polish_ci | utf32 | 165 | | Yes | 1 |
| utf32_estonian_ci | utf32 | 166 | | Yes | 1 |
| utf32_spanish_ci | utf32 | 167 | | Yes | 1 |
| utf32_swedish_ci | utf32 | 168 | | Yes | 1 |
| utf32_turkish_ci | utf32 | 169 | | Yes | 1 |
| utf32_czech_ci | utf32 | 170 | | Yes | 1 |
| utf32_danish_ci | utf32 | 171 | | Yes | 1 |
| utf32_lithuanian_ci | utf32 | 172 | | Yes | 1 |
| utf32_slovak_ci | utf32 | 173 | | Yes | 1 |
| utf32_spanish2_ci | utf32 | 174 | | Yes | 1 |
| utf32_roman_ci | utf32 | 175 | | Yes | 1 |
| utf32_persian_ci | utf32 | 176 | | Yes | 1 |
| utf32_esperanto_ci | utf32 | 177 | | Yes | 1 |
| utf32_hungarian_ci | utf32 | 178 | | Yes | 1 |
| utf32_sinhala_ci | utf32 | 179 | | Yes | 1 |
| utf32_german2_ci | utf32 | 180 | | Yes | 1 |
| utf32_croatian_ci | utf32 | 181 | | Yes | 1 |
| utf32_unicode_520_ci | utf32 | 182 | | Yes | 1 |
| utf32_vietnamese_ci | utf32 | 183 | | Yes | 1 |
| utf8_unicode_ci | utf8 | 192 | | Yes | 1 |
| utf8_icelandic_ci | utf8 | 193 | | Yes | 1 |
| utf8_latvian_ci | utf8 | 194 | | Yes | 1 |
| utf8_romanian_ci | utf8 | 195 | | Yes | 1 |
| utf8_slovenian_ci | utf8 | 196 | | Yes | 1 |
| utf8_polish_ci | utf8 | 197 | | Yes | 1 |
| utf8_estonian_ci | utf8 | 198 | | Yes | 1 |
| utf8_spanish_ci | utf8 | 199 | | Yes | 1 |
| utf8_swedish_ci | utf8 | 200 | | Yes | 1 |
| utf8_turkish_ci | utf8 | 201 | | Yes | 1 |
| utf8_czech_ci | utf8 | 202 | | Yes | 1 |
| utf8_danish_ci | utf8 | 203 | | Yes | 1 |
| utf8_lithuanian_ci | utf8 | 204 | | Yes | 1 |
| utf8_slovak_ci | utf8 | 205 | | Yes | 1 |
| utf8_spanish2_ci | utf8 | 206 | | Yes | 1 |
| utf8_roman_ci | utf8 | 207 | | Yes | 1 |
| utf8_persian_ci | utf8 | 208 | | Yes | 1 |
| utf8_esperanto_ci | utf8 | 209 | | Yes | 1 |
| utf8_hungarian_ci | utf8 | 210 | | Yes | 1 |
| utf8_sinhala_ci | utf8 | 211 | | Yes | 1 |
| utf8_german2_ci | utf8 | 212 | | Yes | 1 |
| utf8_croatian_ci | utf8 | 213 | | Yes | 1 |
| utf8_unicode_520_ci | utf8 | 214 | | Yes | 1 |
| utf8_vietnamese_ci | utf8 | 215 | | Yes | 1 |
| utf8_general_mysql500_ci | utf8 | 223 | | Yes | 1 |
| utf8mb4_unicode_ci | utf8mb4 | 224 | | Yes | 1 |
| utf8mb4_icelandic_ci | utf8mb4 | 225 | | Yes | 1 |
| utf8mb4_latvian_ci | utf8mb4 | 226 | | Yes | 1 |
| utf8mb4_romanian_ci | utf8mb4 | 227 | | Yes | 1 |
| utf8mb4_slovenian_ci | utf8mb4 | 228 | | Yes | 1 |
| utf8mb4_polish_ci | utf8mb4 | 229 | | Yes | 1 |
| utf8mb4_estonian_ci | utf8mb4 | 230 | | Yes | 1 |
| utf8mb4_spanish_ci | utf8mb4 | 231 | | Yes | 1 |
| utf8mb4_swedish_ci | utf8mb4 | 232 | | Yes | 1 |
| utf8mb4_turkish_ci | utf8mb4 | 233 | | Yes | 1 |
| utf8mb4_czech_ci | utf8mb4 | 234 | | Yes | 1 |
| utf8mb4_danish_ci | utf8mb4 | 235 | | Yes | 1 |
| utf8mb4_lithuanian_ci | utf8mb4 | 236 | | Yes | 1 |
| utf8mb4_slovak_ci | utf8mb4 | 237 | | Yes | 1 |
| utf8mb4_spanish2_ci | utf8mb4 | 238 | | Yes | 1 |
| utf8mb4_roman_ci | utf8mb4 | 239 | | Yes | 1 |
| utf8mb4_persian_ci | utf8mb4 | 240 | | Yes | 1 |
| utf8mb4_esperanto_ci | utf8mb4 | 241 | | Yes | 1 |
| utf8mb4_hungarian_ci | utf8mb4 | 242 | | Yes | 1 |
| utf8mb4_sinhala_ci | utf8mb4 | 243 | | Yes | 1 |
| utf8mb4_german2_ci | utf8mb4 | 244 | | Yes | 1 |
| utf8mb4_croatian_ci | utf8mb4 | 245 | | Yes | 1 |
| utf8mb4_unicode_520_ci | utf8mb4 | 246 | | Yes | 1 |
| utf8mb4_vietnamese_ci | utf8mb4 | 247 | | Yes | 1 |
+--------------------------+----------+------+---------+----------+---------+
219 rows in set (0.00 sec)
MySQL 兼容性
SHOW COLLATION
语句与 MySQL 完全兼容。但是 TiDB 中字符集可能有与 MySQL 不同的默认排序规则,详情见与 MySQL 兼容性对比。
如发现任何其他兼容性差异,请在 GitHub 上提交 issue。
另请参阅
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