M. *_* S. 7 sql-server collation sql-server-2012
有人可以向我解释 collationsql_slovak_cp1250_ci_as与collation 之间的区别Slovak_CI_AS吗？
我有一个 db 设置为sql_slovak_cp1250_ci_as并且共享主机仅支持Slovak_CI_AS. 应该不会有问题吧？
非常感谢。
Mar*_*ith 13
整理决定了两件事。
（注：SQL Server 2012中还引入_SC，补充性质，归类为UTF-16编码，而不是UCS-2，但这些都是不相关的问题在这里）
SELECT *
FROM sys.fn_helpcollations()
WHERE name LIKE '%Slovak%CI%AS'
返回以下信息
name description
------------------------- -------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Slovak_CI_AS Slovak, case-insensitive, accent-sensitive, kanatype-insensitive, width-insensitive
Slovak_100_CI_AS Slovak-100, case-insensitive, accent-sensitive, kanatype-insensitive, width-insensitive
SQL_Slovak_CP1250_CI_AS Slovak, case-insensitive, accent-sensitive, kanatype-insensitive, width-insensitive for Unicode Data, SQL Server Sort Order 94 on Code Page 1250 for non-Unicode Data
所以在 2012 年有两个窗口排序规则和一个 SQL 排序规则。描述没有指出 Windows 版本的代码页，但从下面可以看出它们都是相同的。
CREATE TABLE #Collations
(
code TINYINT PRIMARY KEY,
SQL_Slovak_CP1250_CI_AS CHAR(1) COLLATE SQL_Slovak_CP1250_CI_AS,
Slovak_CI_AS CHAR(1) COLLATE Slovak_CI_AS,
Slovak_100_CI_AS CHAR(1) COLLATE Slovak_100_CI_AS,
/*Included just to show an example of a different code page*/
Latin1_General_CI_AS CHAR(1) COLLATE Latin1_General_CI_AS
);
WITH E00(N) AS (SELECT 1 UNION ALL SELECT 1), --2
E02(N) AS (SELECT 1 FROM E00 a, E00 b), --4
E04(N) AS (SELECT 1 FROM E02 a, E02 b), --16
E08(N) AS (SELECT 1 FROM E04 a, E04 b) --256
INSERT INTO #Collations
(code)
SELECT ROW_NUMBER() OVER (ORDER BY (SELECT 0)) - 1
FROM E08
UPDATE #Collations
SET SQL_Slovak_CP1250_CI_AS = CAST(code AS BINARY(1)),
Slovak_CI_AS = CAST(code AS BINARY(1)),
Slovak_100_CI_AS = CAST(code AS BINARY(1)),
Latin1_General_CI_AS = CAST(code AS BINARY(1))
SELECT *
FROM #Collations
或者，或者，使用该COLLATIONPROPERTY功能
SELECT COLLATIONPROPERTY('SQL_Slovak_CP1250_CI_AS', 'CodePage') AS SQL_Slovak_CP1250_CI_AS,
COLLATIONPROPERTY('Slovak_CI_AS', 'CodePage') AS Slovak_CI_AS,
COLLATIONPROPERTY('Slovak_100_CI_AS', 'CodePage') AS Slovak_100_CI_AS,
COLLATIONPROPERTY('Latin1_General_CI_AS', 'CodePage') AS Latin1_General_CI_AS
退货
+-------------------------+--------------+------------------+----------------------+
| SQL_Slovak_CP1250_CI_AS | Slovak_CI_AS | Slovak_100_CI_AS | Latin1_General_CI_AS |
+-------------------------+--------------+------------------+----------------------+
| 1250 | 1250 | 1250 | 1252 |
+-------------------------+--------------+------------------+----------------------+
因此，就第 1 点而言，整理对SQL_Slovak_CP1250_CI_ASvs没有影响Slovak_CI_AS。
对于第 2 点，请参阅将 SQL 排序规则与 Windows 排序规则进行比较。该排序规则语义部分有关于这两个有什么不同，但直接跳到了一些讨论的建议
提供 SQL 排序规则是为了与早期版本的 SQL Server 向后兼容。Windows 排序规则为 SQL Server 中的 Unicode 和非 Unicode 文本提供一致的字符串比较，这也与 Windows 操作系统中的字符串比较一致。由于所有这些原因，除非存在向后兼容性问题或需要 SQL 排序规则的特定性能问题，否则首选 Windows 排序规则。
因此，除非您有某些特定的向后兼容性需求，否则无论如何您都应该使用 Windows 排序规则。此外，我会使用它，Slovak_100_CI_AS因为这是更新的并避免了这样的问题。
要查看三个排序规则之间比较语义如何不同的细节示例，您可以使用之前创建的临时表并尝试
SELECT code,
/*Exclude some characters that will mess up the formatting*/
CASE WHEN code IN (9,10,12,13) THEN '' ELSE SQL_Slovak_CP1250_CI_AS END AS [Char],
DENSE_RANK() OVER (ORDER BY SQL_Slovak_CP1250_CI_AS) AS SQL_Slovak_CP1250_CI_AS,
DENSE_RANK() OVER (ORDER BY Slovak_CI_AS) AS Slovak_CI_AS,
DENSE_RANK() OVER (ORDER BY Slovak_100_CI_AS) AS Slovak_100_CI_AS
FROM #Collations
ORDER BY SQL_Slovak_CP1250_CI_AS
这产生以下结果
+------+------+-------------------------+--------------+------------------+
| code | Char | SQL_Slovak_CP1250_CI_AS | Slovak_CI_AS | Slovak_100_CI_AS |
+------+------+-------------------------+--------------+------------------+
| 0 | | 1 | 1 | 1 |
| 1 | | 2 | 2 | 2 |
| 2 | | 3 | 3 | 3 |
| 3 | | 4 | 4 | 4 |
| 4 | | 5 | 5 | 5 |
| 5 | | 6 | 6 | 6 |
| 6 | | 7 | 7 | 7 |
| 7 | | 8 | 8 | 8 |
| 8 | | 9 | 9 | 9 |
| 14 | | 10 | 10 | 10 |
| 15 | | 11 | 11 | 11 |
| 16 | | 12 | 12 | 12 |
| 17 | | 13 | 13 | 13 |
| 18 | | 14 | 14 | 14 |
| 19 | | 15 | 15 | 15 |
| 20 | | 16 | 16 | 16 |
| 21 | | 17 | 17 | 17 |
| 22 | | 18 | 18 | 18 |
| 23 | | 19 | 19 | 19 |
| 24 | | 20 | 20 | 20 |
| 25 | | 21 | 21 | 21 |
| 26 | | 22 | 22 | 22 |
| 27 | | 23 | 23 | 23 |
| 28 | | 24 | 24 | 24 |
| 29 | | 25 | 25 | 25 |
| 30 | | 26 | 26 | 26 |
| 31 | | 27 | 27 | 27 |
| 127 | | 28 | 28 | 28 |
| 129 | | 29 | 29 | 106 |
| 131 | | 30 | 30 | 107 |
| 136 | | 31 | 31 | 108 |
| 144 | | 32 | 32 | 109 |
| 152 | | 33 | 33 | 110 |
| 39 | ' | 34 | 34 | 29 |
| 45 | - | 35 | 35 | 30 |
| 173 | | 36 | 36 | 1 |
| 150 | – | 37 | 37 | 31 |
| 151 | — | 38 | 38 | 32 |
| 32 | | 39 | 1 | 1 |
| 160 | | 40 | 39 | 33 |
| 9 | | 41 | 40 | 34 |
| 10 | | 42 | 41 | 35 |
| 11 | | 43 | 42 | 36 |
| 12 | | 44 | 43 | 37 |
| 13 | | 45 | 44 | 38 |
| 33 | ! | 46 | 45 | 39 |
| 34 | " | 47 | 46 | 40 |
| 35 | # | 48 | 47 | 41 |
| 36 | $ | 49 | 48 | 42 |
| 37 | % | 50 | 49 | 43 |
| 38 | & | 51 | 50 | 44 |
| 40 | ( | 52 | 51 | 45 |
| 41 | ) | 53 | 52 | 46 |
| 42 | * | 54 | 53 | 47 |
| 44 | , | 55 | 54 | 48 |
| 46 | . | 56 | 55 | 49 |
| 47 | / | 57 | 56 | 50 |
| 58 | : | 58 | 57 | 51 |
| 59 | ; | 59 | 58 | 52 |
| 63 | ? | 60 | 59 | 53 |
| 64 | @ | 61 | 60 | 54 |
| 91 | [ | 62 | 61 | 55 |
| 92 | \ | 63 | 62 | 56 |
| 93 | ] | 64 | 63 | 57 |
| 94 | ^ | 65 | 64 | 58 |
| 95 | _ | 66 | 65 | 59 |
| 96 | ` | 67 | 66 | 60 |
| 123 | { | 68 | 67 | 61 |
| 124 | | | 69 | 68 | 62 |
| 125 | } | 70 | 69 | 63 |
| 126 | ~ | 71 | 70 | 64 |
| 166 | ¦ | 72 | 71 | 65 |
| 168 | ¨ | 73 | 72 | 66 |
| 180 | ´ | 74 | 73 | 67 |
| 184 | ¸ | 75 | 74 | 68 |
| 161 | ? | 76 | 75 | 69 |
| 162 | ? | 77 | 76 | 70 |
| 255 | ? | 78 | 77 | 71 |
| 178 | ? | 79 | 78 | 72 |
| 189 | ? | 80 | 79 | 73 |
| 145 | ‘ | 81 | 80 | 74 |
| 146 | ’ | 82 | 81 | 75 |
| 130 | ‚ | 83 | 82 | 76 |
| 147 | “ | 84 | 83 | 77 |
| 148 | ” | 85 | 84 | 78 |
| 132 | „ | 86 | 85 | 79 |
| 139 | ‹ | 87 | 86 | 80 |
| 155 | › | 88 | 87 | 81 |
| 43 | + | 89 | 88 | 84 |
| 60 | < | 90 | 89 | 85 |
| 61 | = | 91 | 90 | 86 |
| 62 | > | 92 | 91 | 87 |
| 177 | ± | 93 | 92 | 88 |
| 171 | « | 94 | 93 | 89 |
| 187 | » | 95 | 94 | 90 |
| 215 | × | 96 | 95 | 91 |
| 247 | ÷ | 97 | 96 | 92 |
| 164 | ¤ | 98 | 97 | 82 |
| 167 | § | 99 | 98 | 93 |
| 169 | © | 100 | 99 | 94 |
| 172 | ¬ | 101 | 100 | 95 |
| 174 | ® | 102 | 101 | 96 |
| 176 | ° | 103 | 102 | 97 |
| 181 | µ | 104 | 103 | 98 |
| 182 | ¶ | 105 | 104 | 99 |
| 183 | · | 106 | 105 | 100 |
| 134 | † | 107 | 106 | 102 |
| 135 | ‡ | 108 | 107 | 103 |
| 149 | • | 109 | 108 | 104 |
| 133 | … | 110 | 109 | 101 |
| 137 | ‰ | 111 | 110 | 105 |
| 128 | € | 112 | 111 | 83 |
| 48 | 0 | 113 | 112 | 111 |
| 49 | 1 | 114 | 113 | 112 |
| 50 | 2 | 115 | 114 | 113 |
| 51 | 3 | 116 | 115 | 114 |
| 52 | 4 | 117 | 116 | 115 |
| 53 | 5 | 118 | 117 | 116 |
| 54 | 6 | 119 | 118 | 117 |
| 55 | 7 | 120 | 119 | 118 |
| 56 | 8 | 121 | 120 | 119 |
| 57 | 9 | 122 | 121 | 120 |
| 97 | a | 123 | 122 | 121 |
| 65 | A | 123 | 122 | 121 |
| 193 | Á | 124 | 123 | 122 |
| 225 | á | 124 | 123 | 122 |
| 226 | â | 125 | 124 | 123 |
| 194 | Â | 125 | 124 | 123 |
| 195 | ? | 126 | 125 | 124 |
| 227 | ? | 126 | 125 | 124 |
| 185 | ? | 127 | 126 | 125 |
| 165 | ? | 127 | 126 | 125 |
| 196 | Ä | 128 | 127 | 126 |
| 228 | ä | 128 | 127 | 126 |
| 66 | B | 129 | 128 | 127 |
| 98 | b | 129 | 128 | 127 |
| 99 | c | 130 | 129 | 128 |
| 67 | C | 130 | 129 | 128 |
| 230 | ? | 131 | 130 | 129 |
| 198 | ? | 131 | 130 | 129 |
| 199 | Ç | 132 | 131 | 130 |
| 231 | ç | 132 | 131 | 130 |
| 232 | ? | 133 | 132 | 131 |
| 200 | ? | 133 | 132 | 131 |
| 68 | D | 134 | 133 | 132 |
| 100 | d | 134 | 133 | 132 |
| 239 | ? | 135 | 134 | 133 |
| 207 | ? | 135 | 134 | 133 |
| 208 | ? | 136 | 135 | 134 |
| 240 | ? | 136 | 135 | 134 |
| 101 | e | 137 | 136 | 135 |
| 69 | E | 137 | 136 | 135 |
| 235 | ë | 138 | 137 | 136 |
| 203 | Ë | 138 | 137 | 136 |
| 201 | É | 139 | 138 | 137 |
| 233 | é | 139 | 138 | 137 |
| 236 | ? | 140 | 139 | 138 |
| 204 | ? | 140 | 139 | 138 |
| 202 | ? | 141 | 140 | 139 |
| 234 | ? | 141 | 140 | 139 |
| 70 | F | 142 | 141 | 140 |
| 102 | f | 142 | 141 | 140 |
| 103 | g | 143 | 142 | 141 |
| 71 | G | 143 | 142 | 141 |
| 72 | H | 144 | 143 | 142 |
| 104 | h | 144 | 143 | 142 |
| 105 | i | 145 | 144 | 143 |
| 73 | I | 145 | 144 | 143 |
| 237 | í | 146 | 145 | 144 |
| 205 | Í | 146 | 145 | 144 |
| 206 | Î | 147 | 146 | 145 |
| 238 | î | 147 | 146 | 145 |
| 74 | J | 148 | 147 | 146 |
| 106 | j | 148 | 147 | 146 |
| 107 | k | 149 | 148 | 147 |
| 75 | K | 149 | 148 | 147 |
| 76 | L | 150 | 149 | 148 |
| 108 | l | 150 | 149 | 148 |
| 229 | ? | 151 | 150 | 149 |
| 197 | ? | 151 | 150 | 149 |
| 188 | ? | 152 | 151 | 150 |
| 190 | ? | 152 | 151 | 150 |
| 179 | ? | 153 | 152 | 151 |
| 163 | ? | 153 | 152 | 151 |
| 77 | M | 154 | 153 | 152 |
| 109 | m | 154 | 153 | 152 |
| 110 | n | 155 | 154 | 153 |
| 78 | N | 155 | 154 | 153 |
| 209 | ? | 156 | 155 | 154 |
| 241 | ? | 156 | 155 | 154 |
| 242 | ? | 157 | 156 | 155 |
| 210 | ? | 157 | 156 | 155 |
| 79 | O | 158 | 157 | 156 |
| 111 | o | 158 | 157 | 156 |
| 214 | Ö | 159 | 158 | 157 |
| 246 | ö | 159 | 158 | 157 |
| 211 | Ó | 160 | 159 | 158 |
| 243 | ó | 160 | 159 | 158 |
| 213 | ? | 161 | 160 | 159 |
| 245 | ? | 161 | 160 | 159 |
| 212 | Ô | 162 | 161 | 160 |
| 244 | ô | 162 | 161 | 160 |
| 112 | p | 163 | 162 | 161 |
| 80 | P | 163 | 162 | 161 |
| 81