mysql的utf8mb4編碼的collation應(yīng)該怎么選擇?下面這么多,分別是什么意思?
mysql> SHOW COLLATION WHERE Charset = 'utf8mb4'; | ||||||
---|---|---|---|---|---|---|
Collation | Charset | Id | Default | Compiled | Sortlen | Pad_attribute |
utf8mb4_0900_ai_ci | utf8mb4 | 255 | Yes | Yes | 0 | NO PAD |
utf8mb4_0900_as_ci | utf8mb4 | 305 | Yes | 0 | NO PAD | |
utf8mb4_0900_as_cs | utf8mb4 | 278 | Yes | 0 | NO PAD | |
utf8mb4_bin | utf8mb4 | 46 | Yes | 1 | PAD SPACE | |
utf8mb4_croatian_ci | utf8mb4 | 245 | Yes | 8 | PAD SPACE | |
utf8mb4_cs_0900_ai_ci | utf8mb4 | 266 | Yes | 0 | NO PAD | |
utf8mb4_cs_0900_as_cs | utf8mb4 | 289 | Yes | 0 | NO PAD | |
utf8mb4_czech_ci | utf8mb4 | 234 | Yes | 8 | PAD SPACE | |
utf8mb4_danish_ci | utf8mb4 | 235 | Yes | 8 | PAD SPACE | |
utf8mb4_da_0900_ai_ci | utf8mb4 | 267 | Yes | 0 | NO PAD | |
utf8mb4_da_0900_as_cs | utf8mb4 | 290 | Yes | 0 | NO PAD | |
utf8mb4_de_pb_0900_ai_ci | utf8mb4 | 256 | Yes | 0 | NO PAD | |
utf8mb4_de_pb_0900_as_cs | utf8mb4 | 279 | Yes | 0 | NO PAD | |
utf8mb4_eo_0900_ai_ci | utf8mb4 | 273 | Yes | 0 | NO PAD | |
utf8mb4_eo_0900_as_cs | utf8mb4 | 296 | Yes | 0 | NO PAD | |
utf8mb4_esperanto_ci | utf8mb4 | 241 | Yes | 8 | PAD SPACE | |
utf8mb4_estonian_ci | utf8mb4 | 230 | Yes | 8 | PAD SPACE | |
utf8mb4_es_0900_ai_ci | utf8mb4 | 263 | Yes | 0 | NO PAD | |
utf8mb4_es_0900_as_cs | utf8mb4 | 286 | Yes | 0 | NO PAD | |
utf8mb4_es_trad_0900_ai_ci | utf8mb4 | 270 | Yes | 0 | NO PAD | |
utf8mb4_es_trad_0900_as_cs | utf8mb4 | 293 | Yes | 0 | NO PAD | |
utf8mb4_et_0900_ai_ci | utf8mb4 | 262 | Yes | 0 | NO PAD | |
utf8mb4_et_0900_as_cs | utf8mb4 | 285 | Yes | 0 | NO PAD | |
utf8mb4_general_ci | utf8mb4 | 45 | Yes | 1 | PAD SPACE | |
utf8mb4_german2_ci | utf8mb4 | 244 | Yes | 8 | PAD SPACE | |
utf8mb4_hr_0900_ai_ci | utf8mb4 | 275 | Yes | 0 | NO PAD | |
utf8mb4_hr_0900_as_cs | utf8mb4 | 298 | Yes | 0 | NO PAD | |
utf8mb4_hungarian_ci | utf8mb4 | 242 | Yes | 8 | PAD SPACE | |
utf8mb4_hu_0900_ai_ci | utf8mb4 | 274 | Yes | 0 | NO PAD | |
utf8mb4_hu_0900_as_cs | utf8mb4 | 297 | Yes | 0 | NO PAD | |
utf8mb4_icelandic_ci | utf8mb4 | 225 | Yes | 8 | PAD SPACE | |
utf8mb4_is_0900_ai_ci | utf8mb4 | 257 | Yes | 0 | NO PAD | |
utf8mb4_is_0900_as_cs | utf8mb4 | 280 | Yes | 0 | NO PAD | |
utf8mb4_ja_0900_as_cs | utf8mb4 | 303 | Yes | 0 | NO PAD | |
utf8mb4_ja_0900_as_cs_ks | utf8mb4 | 304 | Yes | 24 | NO PAD | |
utf8mb4_latvian_ci | utf8mb4 | 226 | Yes | 8 | PAD SPACE | |
utf8mb4_la_0900_ai_ci | utf8mb4 | 271 | Yes | 0 | NO PAD | |
utf8mb4_la_0900_as_cs | utf8mb4 | 294 | Yes | 0 | NO PAD | |
utf8mb4_lithuanian_ci | utf8mb4 | 236 | Yes | 8 | PAD SPACE | |
utf8mb4_lt_0900_ai_ci | utf8mb4 | 268 | Yes | 0 | NO PAD | |
utf8mb4_lt_0900_as_cs | utf8mb4 | 291 | Yes | 0 | NO PAD | |
utf8mb4_lv_0900_ai_ci | utf8mb4 | 258 | Yes | 0 | NO PAD | |
utf8mb4_lv_0900_as_cs | utf8mb4 | 281 | Yes | 0 | NO PAD | |
utf8mb4_persian_ci | utf8mb4 | 240 | Yes | 8 | PAD SPACE | |
utf8mb4_pl_0900_ai_ci | utf8mb4 | 261 | Yes | 0 | NO PAD | |
utf8mb4_pl_0900_as_cs | utf8mb4 | 284 | Yes | 0 | NO PAD | |
utf8mb4_polish_ci | utf8mb4 | 229 | Yes | 8 | PAD SPACE | |
utf8mb4_romanian_ci | utf8mb4 | 227 | Yes | 8 | PAD SPACE | |
utf8mb4_roman_ci | utf8mb4 | 239 | Yes | 8 | PAD SPACE | |
utf8mb4_ro_0900_ai_ci | utf8mb4 | 259 | Yes | 0 | NO PAD | |
utf8mb4_ro_0900_as_cs | utf8mb4 | 282 | Yes | 0 | NO PAD | |
utf8mb4_ru_0900_ai_ci | utf8mb4 | 306 | Yes | 0 | NO PAD | |
utf8mb4_ru_0900_as_cs | utf8mb4 | 307 | Yes | 0 | NO PAD | |
utf8mb4_sinhala_ci | utf8mb4 | 243 | Yes | 8 | PAD SPACE | |
utf8mb4_sk_0900_ai_ci | utf8mb4 | 269 | Yes | 0 | NO PAD | |
utf8mb4_sk_0900_as_cs | utf8mb4 | 292 | Yes | 0 | NO PAD | |
utf8mb4_slovak_ci | utf8mb4 | 237 | Yes | 8 | PAD SPACE | |
utf8mb4_slovenian_ci | utf8mb4 | 228 | Yes | 8 | PAD SPACE | |
utf8mb4_sl_0900_ai_ci | utf8mb4 | 260 | Yes | 0 | NO PAD | |
utf8mb4_sl_0900_as_cs | utf8mb4 | 283 | Yes | 0 | NO PAD | |
utf8mb4_spanish2_ci | utf8mb4 | 238 | Yes | 8 | PAD SPACE | |
utf8mb4_spanish_ci | utf8mb4 | 231 | Yes | 8 | PAD SPACE | |
utf8mb4_sv_0900_ai_ci | utf8mb4 | 264 | Yes | 0 | NO PAD | |
utf8mb4_sv_0900_as_cs | utf8mb4 | 287 | Yes | 0 | NO PAD | |
utf8mb4_swedish_ci | utf8mb4 | 232 | Yes | 8 | PAD SPACE | |
utf8mb4_tr_0900_ai_ci | utf8mb4 | 265 | Yes | 0 | NO PAD | |
utf8mb4_tr_0900_as_cs | utf8mb4 | 288 | Yes | 0 | NO PAD | |
utf8mb4_turkish_ci | utf8mb4 | 233 | Yes | 8 | PAD SPACE | |
utf8mb4_unicode_520_ci | utf8mb4 | 246 | Yes | 8 | PAD SPACE | |
utf8mb4_unicode_ci | utf8mb4 | 224 | Yes | 8 | PAD SPACE | |
utf8mb4_vietnamese_ci | utf8mb4 | 247 | Yes | 8 | PAD SPACE | |
utf8mb4_vi_0900_ai_ci | utf8mb4 | 277 | Yes | 0 | NO PAD | |
utf8mb4_vi_0900_as_cs | utf8mb4 | 300 | Yes | 0 | NO PAD |
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