Antworten:
Die Sortierung bestimmt zwei Dinge.
(NB: SQL Server 2012 auch einleitet _SC, ergänzender Charakter , Sortierungen für UTF-16 - Codierung statt UCS-2 , aber diese sind nicht relevant für Ihre Frage hier)
SELECT *
FROM sys.fn_helpcollations()
WHERE name LIKE '%Slovak%CI%AS'
Gibt die folgenden Informationen zurück
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
2012 gibt es also zwei Windows-Kollatierungen und eine SQL-Kollatierung. Die Beschreibung gibt nicht die Codepage für die Windows-Versionen an, aber dass sie alle gleich sind, können Sie von unten sehen.
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
Oder alternativ mit der COLLATIONPROPERTYFunktion
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
Kehrt zurück
+-------------------------+--------------+------------------+----------------------+
| SQL_Slovak_CP1250_CI_AS | Slovak_CI_AS | Slovak_100_CI_AS | Latin1_General_CI_AS |
+-------------------------+--------------+------------------+----------------------+
| 1250 | 1250 | 1250 | 1252 |
+-------------------------+--------------+------------------+----------------------+
Für Punkt 1 macht die Kollatierung für SQL_Slovak_CP1250_CI_ASvs keinen Unterschied Slovak_CI_AS.
Für Punkt 2 siehe Vergleichen von SQL-Kollatierungen mit Windows-Kollatierungen . Im Abschnitt zur Kollatationssemantik wird erläutert, wie sich die beiden unterscheiden, aber es wird mit den Empfehlungen fortgefahren
SQL-Kollatierungen werden aus Gründen der Abwärtskompatibilität mit früheren Versionen von SQL Server bereitgestellt. Windows-Kollatierungen bieten konsistente Zeichenfolgenvergleiche für Unicode- und Nicht-Unicode-Text in SQL Server, die auch mit Zeichenfolgenvergleichen im Windows-Betriebssystem übereinstimmen. Aus all diesen Gründen werden Windows-Kollatierungen bevorzugt, es sei denn, es gibt Abwärtskompatibilitätsprobleme oder bestimmte Leistungsprobleme, die eine SQL-Kollatierung erfordern.
Daher sollten Sie die Windows-Sortierungen ohnehin verwenden, es sei denn, Sie haben spezielle Anforderungen an die Abwärtskompatibilität. Auch würde ich verwenden, Slovak_100_CI_ASda dies neuer ist und solche Probleme vermeidet .
Um Beispiele für Besonderheiten zu sehen, wie sich die Vergleichssemantik zwischen den drei Kollatierungen unterscheidet, können Sie die zuvor erstellte temporäre Tabelle verwenden und versuchen
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
Das ergibt die folgenden Ergebnisse
+------+------+-------------------------+--------------+------------------+
| 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 | ˇ | 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 | Ă | 126 | 125 | 124 |
| 227 | ă | 126 | 125 | 124 |
| 185 | ą | 127 | 126 | 125 |
| 165 | Ą | 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 | ć | 131 | 130 | 129 |
| 198 | Ć | 131 | 130 | 129 |
| 199 | Ç | 132 | 131 | 130 |
| 231 | ç | 132 | 131 | 130 |
| 232 | č | 133 | 132 | 131 |
| 200 | Č | 133 | 132 | 131 |
| 68 | D | 134 | 133 | 132 |
| 100 | d | 134 | 133 | 132 |
| 239 | ď | 135 | 134 | 133 |
| 207 | Ď | 135 | 134 | 133 |
| 208 | Đ | 136 | 135 | 134 |
| 240 | đ | 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 | ě | 140 | 139 | 138 |
| 204 | Ě | 140 | 139 | 138 |
| 202 | Ę | 141 | 140 | 139 |
| 234 | ę | 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 | ĺ | 151 | 150 | 149 |
| 197 | Ĺ | 151 | 150 | 149 |
| 188 | Ľ | 152 | 151 | 150 |
| 190 | ľ | 152 | 151 | 150 |
| 179 | ł | 153 | 152 | 151 |
| 163 | Ł | 153 | 152 | 151 |
| 77 | M | 154 | 153 | 152 |
| 109 | m | 154 | 153 | 152 |
| 110 | n | 155 | 154 | 153 |
| 78 | N | 155 | 154 | 153 |
| 209 | Ń | 156 | 155 | 154 |
| 241 | ń | 156 | 155 | 154 |
| 242 | ň | 157 | 156 | 155 |
| 210 | Ň | 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 | Ő | 161 | 160 | 159 |
| 245 | ő | 161 | 160 | 159 |
| 212 | Ô | 162 | 161 | 160 |
| 244 | ô | 162 | 161 | 160 |
| 112 | p | 163 | 162 | 161 |
| 80 | P | 163 | 162 | 161 |
| 81 | Q | 164 | 163 | 162 |
| 113 | q | 164 | 163 | 162 |
| 114 | r | 165 | 164 | 163 |
| 82 | R | 165 | 164 | 163 |
| 192 | Ŕ | 166 | 165 | 164 |
| 224 | ŕ | 166 | 165 | 164 |
| 248 | ř | 167 | 166 | 165 |
| 216 | Ř | 167 | 166 | 165 |
| 83 | S | 168 | 167 | 166 |
| 115 | s | 168 | 167 | 166 |
| 156 | ś | 169 | 168 | 167 |
| 140 | Ś | 169 | 168 | 167 |
| 170 | Ş | 170 | 169 | 168 |
| 186 | ş | 170 | 169 | 168 |
| 223 | ß | 171 | 170 | 169 |
| 138 | Š | 172 | 171 | 170 |
| 154 | š | 172 | 171 | 170 |
| 84 | T | 173 | 172 | 171 |
| 116 | t | 173 | 172 | 171 |
| 157 | ť | 174 | 173 | 172 |
| 141 | Ť | 174 | 173 | 172 |
| 254 | ţ | 175 | 174 | 173 |
| 222 | Ţ | 175 | 174 | 173 |
| 153 | ™ | 176 | 175 | 174 |
| 85 | U | 177 | 176 | 175 |
| 117 | u | 177 | 176 | 175 |
| 220 | Ü | 178 | 177 | 176 |
| 252 | ü | 178 | 177 | 176 |
| 250 | ú | 179 | 178 | 177 |
| 218 | Ú | 179 | 178 | 177 |
| 217 | Ů | 180 | 179 | 178 |
| 249 | ů | 180 | 179 | 178 |
| 251 | ű | 181 | 180 | 179 |
| 219 | Ű | 181 | 180 | 179 |
| 118 | v | 182 | 181 | 180 |
| 86 | V | 182 | 181 | 180 |
| 87 | W | 183 | 182 | 181 |
| 119 | w | 183 | 182 | 181 |
| 120 | x | 184 | 183 | 182 |
| 88 | X | 184 | 183 | 182 |
| 89 | Y | 185 | 184 | 183 |
| 121 | y | 185 | 184 | 183 |
| 221 | Ý | 186 | 185 | 184 |
| 253 | ý | 186 | 185 | 184 |
| 122 | z | 187 | 186 | 185 |
| 90 | Z | 187 | 186 | 185 |
| 191 | ż | 188 | 187 | 186 |
| 175 | Ż | 188 | 187 | 186 |
| 159 | ź | 189 | 188 | 187 |
| 143 | Ź | 189 | 188 | 187 |
| 142 | Ž | 190 | 189 | 188 |
| 158 | ž | 190 | 189 | 188 |
+------+------+-------------------------+--------------+------------------+