{"id":3412,"date":"2019-06-06T15:15:01","date_gmt":"2019-06-06T07:15:01","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=3412"},"modified":"2019-06-06T15:15:01","modified_gmt":"2019-06-06T07:15:01","slug":"mysql-information_schema-%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/3412","title":{"rendered":"MySQL information_schema \u8be6\u89e3"},"content":{"rendered":"
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\u5927\u5bb6\u5728\u5b89\u88c5\u6216\u4f7f\u7528MYSQL\u65f6\uff0c\u4f1a\u53d1\u73b0\u9664\u4e86\u81ea\u5df1\u5b89\u88c5\u7684\u6570\u636e\u5e93\u4ee5\u5916\uff0c\u8fd8\u6709\u4e00\u4e2ainformation_schema\u6570\u636e\u5e93\u3002information_schema\u6570\u636e\u5e93\u662f\u505a\u4ec0\u4e48\u7528\u7684\u5462\uff0c\u4f7f\u7528WordPress\u535a\u5ba2\u7684\u670b\u53cb\u53ef\u80fd\u4f1a\u60f3\uff0c\u662f\u4e0d\u662f\u5b89\u88c5\u6a21\u677f\u6dfb\u52a0\u7684\u6570\u636e\u5e93\u5440\uff1f\u770b\u5b8c\u672c\u7247\u6587\u7ae0\u540e\uff0c\u4f60\u5c31\u4f1a\u5bf9information_schema\u6570\u636e\u5e93\u6709\u6240\u4e86\u89e3\u3002<\/p>\n

information_schema\u6570\u636e\u5e93\u662fMySQL\u81ea\u5e26\u7684\uff0c\u5b83\u63d0\u4f9b\u4e86\u8bbf\u95ee\u6570\u636e\u5e93\u5143\u6570\u636e\u7684\u65b9\u5f0f\u3002\u4ec0\u4e48\u662f\u5143\u6570\u636e\u5462\uff1f\u5143\u6570\u636e\u662f\u5173\u4e8e\u6570\u636e\u7684\u6570\u636e\uff0c\u5982\u6570\u636e\u5e93\u540d\u6216\u8868\u540d\uff0c\u5217\u7684\u6570\u636e\u7c7b\u578b\uff0c\u6216\u8bbf\u95ee\u6743\u9650\u7b49\u3002\u6709\u4e9b\u65f6\u5019\u7528\u4e8e\u8868\u8ff0\u8be5\u4fe1\u606f\u7684\u5176\u4ed6\u672f\u8bed\u5305\u62ec\u201c\u6570\u636e\u8bcd\u5178\u201d\u548c\u201c\u7cfb\u7edf\u76ee\u5f55\u201d\u3002
\n\u5728MySQL\u4e2d\uff0c\u628a information_schema \u770b\u4f5c\u662f\u4e00\u4e2a\u6570\u636e\u5e93\uff0c\u786e\u5207\u8bf4\u662f\u4fe1\u606f\u6570\u636e\u5e93\u3002\u5176\u4e2d\u4fdd\u5b58\u7740\u5173\u4e8eMySQL\u670d\u52a1\u5668\u6240\u7ef4\u62a4\u7684\u6240\u6709\u5176\u4ed6\u6570\u636e\u5e93\u7684\u4fe1\u606f\u3002\u5982\u6570\u636e\u5e93\u540d\uff0c\u6570\u636e\u5e93\u7684\u8868\uff0c\u8868\u680f\u7684\u6570\u636e\u7c7b\u578b\u4e0e\u8bbf\u95ee\u6743\u9650\u7b49\u3002\u5728INFORMATION_SCHEMA\u4e2d\uff0c\u6709\u6570\u4e2a\u53ea\u8bfb\u8868\u3002\u5b83\u4eec\u5b9e\u9645\u4e0a\u662f\u89c6\u56fe\uff0c\u800c\u4e0d\u662f\u57fa\u672c\u8868\uff0c\u56e0\u6b64\uff0c\u4f60\u5c06\u65e0\u6cd5\u770b\u5230\u4e0e\u4e4b\u76f8\u5173\u7684\u4efb\u4f55\u6587\u4ef6\u3002<\/p>\n

information_schema\u6570\u636e\u5e93\u8868\u8bf4\u660e:<\/p>\n

SCHEMATA\u8868\uff1a\u63d0\u4f9b\u4e86\u5f53\u524dmysql\u5b9e\u4f8b\u4e2d\u6240\u6709\u6570\u636e\u5e93\u7684\u4fe1\u606f\u3002\u662fshow databases\u7684\u7ed3\u679c\u53d6\u4e4b\u6b64\u8868\u3002<\/p>\n

TABLES\u8868\uff1a\u63d0\u4f9b\u4e86\u5173\u4e8e\u6570\u636e\u5e93\u4e2d\u7684\u8868\u7684\u4fe1\u606f\uff08\u5305\u62ec\u89c6\u56fe\uff09\u3002\u8be6\u7ec6\u8868\u8ff0\u4e86\u67d0\u4e2a\u8868\u5c5e\u4e8e\u54ea\u4e2aschema\uff0c\u8868\u7c7b\u578b\uff0c\u8868\u5f15\u64ce\uff0c\u521b\u5efa\u65f6\u95f4\u7b49\u4fe1\u606f\u3002\u662fshow tables from schemaname\u7684\u7ed3\u679c\u53d6\u4e4b\u6b64\u8868\u3002<\/p>\n

COLUMNS\u8868\uff1a\u63d0\u4f9b\u4e86\u8868\u4e2d\u7684\u5217\u4fe1\u606f\u3002\u8be6\u7ec6\u8868\u8ff0\u4e86\u67d0\u5f20\u8868\u7684\u6240\u6709\u5217\u4ee5\u53ca\u6bcf\u4e2a\u5217\u7684\u4fe1\u606f\u3002\u662fshow columns from schemaname.tablename\u7684\u7ed3\u679c\u53d6\u4e4b\u6b64\u8868\u3002<\/p>\n

STATISTICS\u8868\uff1a\u63d0\u4f9b\u4e86\u5173\u4e8e\u8868\u7d22\u5f15\u7684\u4fe1\u606f\u3002\u662fshow index from schemaname.tablename\u7684\u7ed3\u679c\u53d6\u4e4b\u6b64\u8868\u3002<\/p>\n

USER_PRIVILEGES\uff08\u7528\u6237\u6743\u9650\uff09\u8868\uff1a\u7ed9\u51fa\u4e86\u5173\u4e8e\u5168\u7a0b\u6743\u9650\u7684\u4fe1\u606f\u3002\u8be5\u4fe1\u606f\u6e90\u81eamysql.user\u6388\u6743\u8868\u3002\u662f\u975e\u6807\u51c6\u8868\u3002<\/p>\n

SCHEMA_PRIVILEGES\uff08\u65b9\u6848\u6743\u9650\uff09\u8868\uff1a\u7ed9\u51fa\u4e86\u5173\u4e8e\u65b9\u6848\uff08\u6570\u636e\u5e93\uff09\u6743\u9650\u7684\u4fe1\u606f\u3002\u8be5\u4fe1\u606f\u6765\u81eamysql.db\u6388\u6743\u8868\u3002\u662f\u975e\u6807\u51c6\u8868\u3002<\/p>\n

TABLE_PRIVILEGES\uff08\u8868\u6743\u9650\uff09\u8868\uff1a\u7ed9\u51fa\u4e86\u5173\u4e8e\u8868\u6743\u9650\u7684\u4fe1\u606f\u3002\u8be5\u4fe1\u606f\u6e90\u81eamysql.tables_priv\u6388\u6743\u8868\u3002\u662f\u975e\u6807\u51c6\u8868\u3002<\/p>\n

COLUMN_PRIVILEGES\uff08\u5217\u6743\u9650\uff09\u8868\uff1a\u7ed9\u51fa\u4e86\u5173\u4e8e\u5217\u6743\u9650\u7684\u4fe1\u606f\u3002\u8be5\u4fe1\u606f\u6e90\u81eamysql.columns_priv\u6388\u6743\u8868\u3002\u662f\u975e\u6807\u51c6\u8868\u3002<\/p>\n

CHARACTER_SETS\uff08\u5b57\u7b26\u96c6\uff09\u8868\uff1a\u63d0\u4f9b\u4e86mysql\u5b9e\u4f8b\u53ef\u7528\u5b57\u7b26\u96c6\u7684\u4fe1\u606f\u3002\u662fSHOW CHARACTER SET\u7ed3\u679c\u96c6\u53d6\u4e4b\u6b64\u8868\u3002<\/p>\n

COLLATIONS\u8868\uff1a\u63d0\u4f9b\u4e86\u5173\u4e8e\u5404\u5b57\u7b26\u96c6\u7684\u5bf9\u7167\u4fe1\u606f\u3002<\/p>\n

COLLATION_CHARACTER_SET_APPLICABILITY\u8868\uff1a\u6307\u660e\u4e86\u53ef\u7528\u4e8e\u6821\u5bf9\u7684\u5b57\u7b26\u96c6\u3002\u8fd9\u4e9b\u5217\u7b49\u6548\u4e8eSHOW COLLATION\u7684\u524d\u4e24\u4e2a\u663e\u793a\u5b57\u6bb5\u3002<\/p>\n

TABLE_CONSTRAINTS\u8868\uff1a\u63cf\u8ff0\u4e86\u5b58\u5728\u7ea6\u675f\u7684\u8868\u3002\u4ee5\u53ca\u8868\u7684\u7ea6\u675f\u7c7b\u578b\u3002<\/p>\n

KEY_COLUMN_USAGE\u8868\uff1a\u63cf\u8ff0\u4e86\u5177\u6709\u7ea6\u675f\u7684\u952e\u5217\u3002<\/p>\n

ROUTINES\u8868\uff1a\u63d0\u4f9b\u4e86\u5173\u4e8e\u5b58\u50a8\u5b50\u7a0b\u5e8f\uff08\u5b58\u50a8\u7a0b\u5e8f\u548c\u51fd\u6570\uff09\u7684\u4fe1\u606f\u3002\u6b64\u65f6\uff0cROUTINES\u8868\u4e0d\u5305\u542b\u81ea\u5b9a\u4e49\u51fd\u6570\uff08UDF\uff09\u3002\u540d\u4e3a\u201cmysql.proc name\u201d\u7684\u5217\u6307\u660e\u4e86\u5bf9\u5e94\u4e8eINFORMATION_SCHEMA.ROUTINES\u8868\u7684mysql.proc\u8868\u5217\u3002<\/p>\n

VIEWS\u8868\uff1a\u7ed9\u51fa\u4e86\u5173\u4e8e\u6570\u636e\u5e93\u4e2d\u7684\u89c6\u56fe\u7684\u4fe1\u606f\u3002\u9700\u8981\u6709show views\u6743\u9650\uff0c\u5426\u5219\u65e0\u6cd5\u67e5\u770b\u89c6\u56fe\u4fe1\u606f\u3002<\/p>\n

TRIGGERS\u8868\uff1a\u63d0\u4f9b\u4e86\u5173\u4e8e\u89e6\u53d1\u7a0b\u5e8f\u7684\u4fe1\u606f\u3002\u5fc5\u987b\u6709super\u6743\u9650\u624d\u80fd\u67e5\u770b\u8be5\u8868\u3002<\/p>\n

======================================================<\/p>\n

information_schema\u6570\u636e\u5e93\u662fMySQL\u7cfb\u7edf\u81ea\u5e26\u7684\u6570\u636e\u5e93\uff0c\u5b83\u63d0\u4f9b\u4e86\u6570\u636e\u5e93\u5143\u6570\u636e\u7684\u8bbf\u95ee\u65b9\u5f0f\u3002\u611f\u89c9information_schema\u5c31\u50cf\u662fMySQL\u5b9e\u4f8b\u7684\u4e00\u4e2a\u767e\u79d1\u5168\u4e66\uff0c\u8bb0\u5f55\u4e86\u6570\u636e\u5e93\u5f53\u4e2d\u5927\u90e8\u5206\u6211\u4eec\u9700\u8981\u4e86\u7ed3\u7684\u4fe1\u606f\uff0c\u6bd4\u5982\u5b57\u7b26\u96c6\uff0c\u6743\u9650\u76f8\u5173\uff0c\u6570\u636e\u5e93\u5b9e\u4f53\u5bf9\u8c61\u4fe1\u606f\uff0c\u5916\u68c0\u7ea6\u675f\uff0c\u5206\u533a\uff0c\u538b\u7f29\u8868\uff0c\u8868\u4fe1\u606f\uff0c\u7d22\u5f15\u4fe1\u606f\uff0c\u53c2\u6570\uff0c\u4f18\u5316\uff0c\u9501\u548c\u4e8b\u7269\u7b49\u7b49\u3002\u901a\u8fc7information_schema\u6211\u4eec\u53ef\u4ee5\u7aa5\u900f\u6574\u4e2aMySQL\u5b9e\u4f8b\u7684\u8fd0\u884c\u60c5\u51b5\uff0c\u53ef\u4ee5\u4e86\u7ed3MySQL\u5b9e\u4f8b\u7684\u57fa\u672c\u4fe1\u606f\uff0c\u751a\u81f3\u4f18\u5316\u8c03\u4f18\uff0c\u7ef4\u62a4\u6570\u636e\u5e93\u7b49\uff0c\u53ef\u4ee5\u8bf4\u662f\u771f\u6b63\u7684\u4e00\u90e8\u767e\u79d1\u5168\u4e66\u554a\u54c8\u54c8\u3002<\/div>\n
\u4e0b\u9762\u5c31\u662f\u6839\u636e\u81ea\u5df1\u5b66\u4e60\u7684\u4e00\u4e9b\u5c0f\u5c0f\u7ecf\u9a8c\u5c06\u8fd9\u4e9b\u8868\u8fdb\u884c\u4e00\u4e2a\u5927\u4f53\u7684\u5206\u7c7b\uff0c\u65b9\u4fbf\u5927\u5bb6\u4e86\u7ed3\uff0c\u8981\u662f\u6709\u4e0d\u8db3\u7684\u5730\u65b9\u8bf7\u6307\u51fa\uff0c\u6211\u4f1a\u5c3d\u5feb\u4fee\u6539\u3002<\/div>\n
1\uff1a\u5173\u4e8e\u5b57\u7b26\u96c6\u548c\u6392\u5e8f\u89c4\u5219\u76f8\u5173\u7684\u7cfb\u7edf\u8868<\/strong><\/div>\n
CHARACTER_SETS \uff1a\u5b58\u50a8\u6570\u636e\u5e93\u76f8\u5173\u5b57\u7b26\u96c6\u4fe1\u606f\uff08memory\u5b58\u50a8\u5f15\u64ce\uff09<\/div>\n
COLLATIONS \uff1a\u5b57\u7b26\u96c6\u5bf9\u5e94\u7684\u6392\u5e8f\u89c4\u5219<\/div>\n
COLLATION_CHARACTER_SET_APPLICABILITY\uff1a\u5c31\u662f\u4e00\u4e2a\u5b57\u7b26\u96c6\u548c\u8fde\u7ebf\u6821\u5bf9\u7684\u4e00\u4e2a\u5bf9\u5e94\u5173\u7cfb\u800c\u5df2<\/div>\n
\u4e0b\u9762\u6211\u4eec\u8bf4\u4e00\u4e0bcharacter sets\u548ccollations\u7684\u533a\u522b\uff1a<\/div>\n
\u5b57\u7b26\u96c6\uff08character sets\uff09\u5b58\u50a8\u5b57\u7b26\u4e32\uff0c\u662f\u6307\u4eba\u7c7b\u8bed\u8a00\u4e2d\u6700\u5c0f\u7684\u8868\u4e49\u7b26\u53f7\u3002\u4f8b\u5982\u2019A’\u3001\u2019B’\u7b49\uff1b<\/div>\n
\u6392\u5e8f\u89c4\u5219\uff08collations\uff09\u89c4\u5219\u6bd4\u8f83\u5b57\u7b26\u4e32\uff0ccollations\u662f\u6307\u5728\u540c\u4e00\u5b57\u7b26\u96c6\u5185\u5b57\u7b26\u4e4b\u95f4\u7684\u6bd4\u8f83\u89c4\u5219<\/div>\n
\u6bcf\u4e2a\u5b57\u7b26\u5e8f\u552f\u4e00\u5bf9\u5e94\u4e00\u79cd\u5b57\u7b26\u96c6\uff0c\u4f46\u4e00\u4e2a\u5b57\u7b26\u96c6\u53ef\u4ee5\u5bf9\u5e94\u591a\u79cd\u5b57\u7b26\u5e8f\uff0c\u5176\u4e2d\u6709\u4e00\u4e2a\u662f\u9ed8\u8ba4\u5b57\u7b26\u5e8f(Default Collation)<\/div>\n
\u00a0MySQL\u4e2d\u7684\u5b57\u7b26\u5e8f\u540d\u79f0\u9075\u4ece\u547d\u540d\u60ef\u4f8b\uff1a\u4ee5\u5b57\u7b26\u5e8f\u5bf9\u5e94\u7684\u5b57\u7b26\u96c6\u540d\u79f0\u5f00\u5934\uff1b\u4ee5_ci(\u8868\u793a\u5927\u5c0f\u5199\u4e0d\u654f\u611f)\u3001_cs(\u8868\u793a\u5927\u5c0f\u5199\u654f\u611f)\u6216_bin(\u8868\u793a\u6309\u7f16\u7801\u503c\u6bd4\u8f83)\u7ed3\u5c3e\u3002\u4f8b\u5982\uff1a\u5728\u5b57\u7b26\u5e8f\u201cutf8_general_ci\u201d\u4e0b\uff0c\u5b57\u7b26\u201ca\u201d\u548c\u201cA\u201d\u662f\u7b49\u4ef7\u7684<\/div>\n
\u770b\u4e00\u4e0b\u6709\u5173\u4e8e\u5b57\u7b26\u96c6\u548c\u6821\u5bf9\u76f8\u5173\u7684MySQL\u53d8\u91cf\uff1a<\/div>\n
character_set_server\uff1a\u9ed8\u8ba4\u7684\u5185\u90e8\u64cd\u4f5c\u5b57\u7b26\u96c6<\/div>\n
character_set_client\uff1a\u5ba2\u6237\u7aef\u6765\u6e90\u6570\u636e\u4f7f\u7528\u7684\u5b57\u7b26\u96c6<\/div>\n
character_set_connection\uff1a\u8fde\u63a5\u5c42\u5b57\u7b26\u96c6<\/div>\n
character_set_results\uff1a\u67e5\u8be2\u7ed3\u679c\u5b57\u7b26\u96c6<\/div>\n
character_set_database\uff1a\u5f53\u524d\u9009\u4e2d\u6570\u636e\u5e93\u7684\u9ed8\u8ba4\u5b57\u7b26\u96c6<\/div>\n
character_set_system\uff1a\u7cfb\u7edf\u5143\u6570\u636e(\u5b57\u6bb5\u540d\u7b49)\u5b57\u7b26\u96c6<\/div>\n
\u518d\u770b\u4e00\u4e0bMySQL\u4e2d\u7684\u5b57\u7b26\u96c6\u8f6c\u6362\u8fc7\u7a0b\uff1a<\/div>\n
\uff081\uff09. MySQL Server\u6536\u5230\u8bf7\u6c42\u65f6\u5c06\u8bf7\u6c42\u6570\u636e\u4ececharacter_set_client\u8f6c\u6362\u4e3acharacter_set_connection\uff1b<\/div>\n
\uff082\uff09. \u8fdb\u884c\u5185\u90e8\u64cd\u4f5c\u524d\u5c06\u8bf7\u6c42\u6570\u636e\u4ececharacter_set_connection\u8f6c\u6362\u4e3a\u5185\u90e8\u64cd\u4f5c\u5b57\u7b26\u96c6\uff0c\u5176\u786e\u5b9a\u65b9\u6cd5\u5982\u4e0b\uff1a<\/div>\n
\u4f7f\u7528\u6bcf\u4e2a\u6570\u636e\u5b57\u6bb5\u7684CHARACTER SET\u8bbe\u5b9a\u503c\uff1b<\/div>\n
\u82e5\u4e0a\u8ff0\u503c\u4e0d\u5b58\u5728\uff0c\u5219\u4f7f\u7528\u5bf9\u5e94\u6570\u636e\u8868\u7684DEFAULT CHARACTER SET\u8bbe\u5b9a\u503c(MySQL\u6269\u5c55\uff0c\u975eSQL\u6807\u51c6)\uff1b<\/div>\n
\u82e5\u4e0a\u8ff0\u503c\u4e0d\u5b58\u5728\uff0c\u5219\u4f7f\u7528\u5bf9\u5e94\u6570\u636e\u5e93\u7684DEFAULT CHARACTER SET\u8bbe\u5b9a\u503c\uff1b<\/div>\n
\u82e5\u4e0a\u8ff0\u503c\u4e0d\u5b58\u5728\uff0c\u5219\u4f7f\u7528character_set_server\u8bbe\u5b9a\u503c\u3002<\/div>\n
\uff083\uff09. \u5c06\u64cd\u4f5c\u7ed3\u679c\u4ece\u5185\u90e8\u64cd\u4f5c\u5b57\u7b26\u96c6\u8f6c\u6362\u4e3acharacter_set_results\u3002<\/div>\n
2\uff1a\u6743\u9650\u76f8\u5173\u7684\u4e00\u4e9b\u8868\uff1a<\/strong><\/div>\n
SCHEMA_PRIVILEGES\uff1a\u63d0\u4f9b\u4e86\u6570\u636e\u5e93\u7684\u76f8\u5173\u6743\u9650\uff0c\u8fd9\u4e2a\u8868\u662f\u5185\u5b58\u8868\u662f\u4ecemysql.db\u4e2d\u62c9\u53bb\u51fa\u6765\u7684\u3002<\/div>\n
TABLE_PRIVILEGES:\u63d0\u4f9b\u7684\u662f\u8868\u6743\u9650\u76f8\u5173\u4fe1\u606f\uff0c\u4fe1\u606f\u662f\u4ece\u00a0mysql.tables_priv\u00a0\u8868\u4e2d\u52a0\u8f7d\u7684<\/div>\n
COLUMN_PRIVILEGES\u00a0\uff1a\u8fd9\u4e2a\u8868\u53ef\u4ee5\u6e05\u695a\u5c31\u80fd\u770b\u5230\u8868\u6388\u6743\u7684\u7528\u6237\u7684\u5bf9\u8c61\uff0c\u90a3\u5f20\u8868\u90a3\u4e2a\u5e93\u4ee5\u53ca\u6388\u4e88\u7684\u662f\u4ec0\u4e48\u6743\u9650\uff0c\u5982\u679c\u6388\u6743\u7684\u65f6\u5019\u52a0\u4e0awith grant option\u7684\u8bdd\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5f97\u5230PRIVILEGE_TYPE\u8fd9\u4e2a\u503c\u5fc5\u987b\u662fYES\u3002<\/div>\n
USER_PRIVILEGES:\u63d0\u4f9b\u7684\u662f\u8868\u6743\u9650\u76f8\u5173\u4fe1\u606f\uff0c\u4fe1\u606f\u662f\u4ece\u00a0mysql.user\u00a0\u8868\u4e2d\u52a0\u8f7d\u7684<\/div>\n
\u901a\u8fc7\u8868\u6211\u4eec\u53ef\u4ee5\u5f88\u6e05\u6670\u770b\u5f97\u5230MySQL\u6388\u6743\u7684\u5c42\u6b21\uff0cSCHEMA\uff0cTABLE\uff0cCOLUMN\u7ea7\u522b\uff0c\u5f53\u7136\u8fd9\u4e9b\u90fd\u662f\u57fa\u4e8e\u7528\u6237\u6765\u6388\u4e88\u7684\u3002\u53ef\u4ee5\u770b\u5f97\u5230MySQL\u7684\u6388\u6743\u4e5f\u662f\u76f8\u5f53\u7684\u7ec6\u5bc6\u7684\uff0c\u53ef\u4ee5\u5177\u4f53\u5230\u5217\uff0c\u8fd9\u5728\u67d0\u4e00\u4e9b\u5e94\u7528\u573a\u666f\u4e0b\u8fd8\u662f\u5f88\u6709\u7528\u7684\uff0c\u6bd4\u5982\u5ba1\u8ba1\u7b49\u3002<\/div>\n
3\uff1a\u5b58\u50a8\u6570\u636e\u5e93\u7cfb\u7edf\u7684\u5b9e\u4f53\u5bf9\u8c61\u7684\u4e00\u4e9b\u8868\uff1a<\/strong><\/div>\n
COLUMNS\uff1a\u5b58\u50a8\u8868\u7684\u5b57\u6bb5\u4fe1\u606f\uff0c\u6240\u6709\u7684\u5b58\u50a8\u5f15\u64ce<\/div>\n
INNODB_SYS_COLUMNS\u00a0\uff1a\u5b58\u653e\u7684\u662fINNODB\u7684\u5143\u6570\u636e\uff0c \u4ed6\u662f\u4f9d\u8d56\u4e8eSYS_COLUMNS\u8fd9\u4e2a\u7edf\u8ba1\u8868\u800c\u5b58\u5728\u7684\u3002<\/div>\n
ENGINES\u00a0\uff1a\u5f15\u64ce\u7c7b\u578b\uff0c\u662f\u5426\u652f\u6301\u8fd9\u4e2a\u5f15\u64ce\uff0c\u63cf\u8ff0\uff0c\u662f\u5426\u652f\u6301\u4e8b\u7269\uff0c\u662f\u5426\u652f\u6301\u5206\u5e03\u5f0f\u4e8b\u52a1\uff0c\u662f\u5426\u80fd\u591f\u652f\u6301\u4e8b\u7269\u7684\u56de\u6eda\u70b9<\/div>\n
EVENTS\u00a0\uff1a\u8bb0\u5f55MySQL\u4e2d\u7684\u4e8b\u4ef6\uff0c\u7c7b\u4f3c\u4e8e\u5b9a\u65f6\u4f5c\u4e1a<\/div>\n
FILES\u00a0\uff1a\u8fd9\u5f20\u8868\u63d0\u4f9b\u4e86\u6709\u5173\u5728MySQL\u7684\u8868\u7a7a\u95f4\u4e2d\u7684\u6570\u636e\u5b58\u50a8\u7684\u6587\u4ef6\u7684\u4fe1\u606f\uff0c\u6587\u4ef6\u5b58\u50a8\u7684\u4f4d\u7f6e\uff0c\u8fd9\u4e2a\u8868\u7684\u6570\u636e\u662f\u4eceInnoDB\u00a0in-memory\u4e2d\u62c9\u53d6\u51fa\u6765\u7684\uff0c\u6240\u4ee5\u8bf4\u8fd9\u5f20\u8868\u672c\u8eab\u4e5f\u662f\u4e00\u4e2a\u5185\u5b58\u8868\uff0c\u6bcf\u6b21\u91cd\u542f\u91cd\u65b0\u8fdb\u884c\u62c9\u53d6\u3002\u4e5f\u5c31\u662f\u6211\u4eec\u4e0b\u9762\u8981\u8bf4\u7684INNODB_SYS_DATAFILES\u8fd9\u5f20\u8868\u3002\u8fd8\u8981\u6ce8\u610f\u4e00\u70b9\u7684\u662f\u8fd9\u5f20\u8868\u5305\u542b\u6709\u4e34\u65f6\u8868\u7684\u4fe1\u606f\uff0c\u6240\u4ee5\u8bf4\u548cSYS_DATAFILES\u00a0\u8fd9\u5f20\u8868\u662f\u4e0d\u80fd\u591f\u5bf9\u7b49\u7684\uff0c\u8fd8\u662f\u8981\u4eceINNODB_SYS_DATAFILES\u770b\u3002\u5982\u679cundo\u8868\u7a7a\u95f4\u4e5f\u914d\u7f6e\u662fInnoDB\u00a0\u7684\u8bdd\uff0c\u90a3\u4e48\u4e5f\u662f\u4f1a\u88ab\u8bb0\u5f55\u4e0b\u6765\u7684\u3002<\/div>\n
PARAMETERS\u00a0\uff1a\u53c2\u6570\u8868\u5b58\u50a8\u4e86\u4e00\u4e9b\u5b58\u50a8\u8fc7\u7a0b\u548c\u65b9\u6cd5\u7684\u53c2\u6570\uff0c\u4ee5\u53ca\u5b58\u50a8\u8fc7\u7a0b\u7684\u8fd4\u56de\u503c\u4fe1\u606f\u3002\u5b58\u50a8\u548c\u65b9\u6cd5\u5728ROUTINES\u91cc\u9762\u5b58\u50a8\u3002<\/div>\n
PLUGINS\u00a0\uff1a\u57fa\u672c\u4e0a\u662fMySQL\u7684\u63d2\u4ef6\u4fe1\u606f\uff0c\u662f\u5426\u662f\u6d3b\u52a8\u72b6\u6001\u7b49\u4fe1\u606f\u3002\u5176\u5b9eSHOW PLUGINS\u672c\u8eab\u5c31\u662f\u901a\u8fc7\u8fd9\u5f20\u8868\u6765\u62c9\u53d6\u9053\u5fb7\u6570\u636e<\/div>\n
ROUTINES\uff1a\u5173\u4e8e\u5b58\u50a8\u8fc7\u7a0b\u548c\u65b9\u6cd5function\u7684\u4e00\u4e9b\u4fe1\u606f\uff0c\u4e0d\u8fc7\u8fd9\u4e2a\u4fe1\u606f\u662f\u4e0d\u5305\u62ec\u7528\u6237\u81ea\u5b9a\u4e49\u7684\uff0c\u53ea\u662f\u7cfb\u7edf\u7684\u4e00\u4e9b\u4fe1\u606f\u3002<\/div>\n
SCHEMATA\uff1a\u8fd9\u4e2a\u8868\u63d0\u4f9b\u4e86\u5b9e\u4f8b\u4e0b\u6709\u591a\u5c11\u4e2a\u6570\u636e\u5e93\uff0c\u800c\u4e14\u8fd8\u6709\u6570\u636e\u5e93\u9ed8\u8ba4\u7684\u5b57\u7b26\u96c6<\/div>\n
TRIGGERS\u00a0:\u8fd9\u4e2a\u8868\u8bb0\u5f55\u7684\u5c31\u662f\u89e6\u53d1\u5668\u7684\u4fe1\u606f\uff0c\u5305\u62ec\u6240\u6709\u7684\u76f8\u5173\u7684\u4fe1\u606f\u3002\u7cfb\u7edf\u7684\u548c\u81ea\u5df1\u7528\u6237\u521b\u5efa\u7684\u89e6\u53d1\u5668\u3002<\/div>\n
VIEWS\u00a0:\u89c6\u56fe\u7684\u4fe1\u606f\uff0c\u4e5f\u662f\u7cfb\u7edf\u7684\u548c\u7528\u6237\u7684\u57fa\u672c\u89c6\u56fe\u4fe1\u606f\u3002<\/div>\n
\u8fd9\u4e9b\u8868\u5b58\u50a8\u7684\u90fd\u662f\u4e00\u4e9b\u6570\u636e\u5e93\u7684\u5b9e\u4f53\u5bf9\u8c61\uff0c\u65b9\u4fbf\u6211\u4eec\u8fdb\u884c\u67e5\u8be2\u548c\u7ba1\u7406\uff0c\u5bf9\u4e8e\u4e00\u4e2aDBA\u6765\u8bf4\uff0c\u8fd9\u4e9b\u8868\u80fd\u591f\u5927\u5927\u65b9\u4fbf\u6211\u4eec\u7684\u5de5\u4f5c\uff0c\u66f4\u5feb\u66f4\u65b9\u4fbf\u7684\u4e86\u7ed3\u548c\u67e5\u8be2\u6570\u636e\u5e93\u7684\u76f8\u5173\u4fe1\u606f\u3002<\/div>\n
4\uff1a\u7ea6\u675f\u5916\u952e\u7b49\u76f8\u5173\u7684\u4e00\u4e9b\u8868\uff1a<\/strong><\/div>\n
REFERENTIAL_CONSTRAINTS\uff1a\u8fd9\u4e2a\u8868\u63d0\u4f9b\u7684\u5916\u952e\u76f8\u5173\u7684\u4fe1\u606f\uff0c\u800c\u4e14\u53ea\u63d0\u4f9b\u5916\u952e\u76f8\u5173\u4fe1\u606f<\/div>\n
TABLE_CONSTRAINTS\u00a0\uff1a\u8fd9\u4e2a\u8868\u63d0\u4f9b\u7684\u662f \u76f8\u5173\u7684\u7ea6\u675f\u4fe1\u606f<\/div>\n
INNODB_SYS_FOREIGN_COLS\u00a0\uff1a\u8fd9\u4e2a\u8868\u4e5f\u662f\u5b58\u50a8\u7684INNODB\u5173\u4e8e\u5916\u952e\u7684\u5143\u6570\u636e\u4fe1\u606f\u548cSYS_FOREIGN_COLS\u00a0\u5b58\u50a8\u7684\u4fe1\u606f\u662f\u4e00\u81f4\u7684<\/div>\n
INNODB_SYS_FOREIGN\u00a0\uff1a\u5b58\u50a8\u7684INNODB\u5173\u4e8e\u5916\u952e\u7684\u5143\u6570\u636e\u4fe1\u606f\u548cSYS_FOREIGN_COLS\u00a0\u5b58\u50a8\u7684\u4fe1\u606f\u662f\u4e00\u81f4\u7684\uff0c\u53ea\u4e0d\u8fc7\u662f\u5355\u72ec\u5bf9\u4e8eINNODB\u6765\u8bf4\u7684<\/div>\n
KEY_COLUMN_USAGE\uff1a\u6570\u636e\u5e93\u4e2d\u6240\u6709\u6709\u7ea6\u675f\u7684\u5217\u90fd\u4f1a\u5b58\u4e0b\u4e0b\u6765\uff0c\u4e5f\u4f1a\u8bb0\u5f55\u4e0b\u7ea6\u675f\u7684\u540d\u5b57\u548c\u7c7b\u522b<\/div>\n
\u4e3a\u4ec0\u4e48\u8981\u628a\u5916\u952e\u548c\u7ea6\u675f\u5355\u5217\u51fa\u6765\u5462\uff0c\u56e0\u4e3a\u611f\u89c9\u8fd9\u662f\u4e00\u5757\u72ec\u7acb\u7684\u4e1c\u897f\uff0c\u867d\u7136\u6211\u4eec\u7684\u751f\u4ea7\u73af\u5883\u5927\u90e8\u5206\u90fd\u4e0d\u4f1a\u4f7f\u7528\u5916\u952e\uff0c\u56e0\u4e3a\u8fd9\u4f1a\u964d\u4f4e\u6027\u80fd\uff0c\u4f46\u662f\u5408\u7406\u7684\u5229\u7528\u7ea6\u675f\u8fd8\u662f\u4e00\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\uff0c\u6bd4\u5982\u552f\u4e00\u7ea6\u675f\u3002<\/div>\n
5\uff1a\u5173\u4e8e\u7ba1\u7406\u7684\u4e00\u4e9b\u7684\u4e00\u4e9b\u8868\uff1a<\/strong><\/div>\n
GLOBAL_STATUS \uff0cGLOBAL_VARIABLES\uff0cSESSION_STATUS\uff0cSESSION_VARIABLES\uff1a\u8fd9\u56db\u5f20\u8868\u5206\u522b\u8bb0\u5f55\u4e86\u7cfb\u7edf\u7684\u53d8\u91cf\uff0c\u72b6\u6001\uff08\u5168\u5c40\u548c\u4f1a\u8bdd\u7684\u4fe1\u606f\uff09\uff0c\u4f5c\u4e3aDBA\u76f8\u4fe1\u5927\u5bb6\u4e5f\u90fd\u6bd4\u8f83\u719f\u6089\u4e86\uff0c\u800c\u4e14\u8fd9\u51e0\u5f20\u8868\u4e5f\u662f\u5728\u7cfb\u7edf\u91cd\u542f\u7684\u65f6\u5019\u56de\u91cd\u65b0\u52a0\u8f7d\u7684\u3002\u4e5f\u5c31\u662f\u5185\u5b58\u8868\u3002<\/div>\n
PARTITIONS\u00a0\uff1aMySQL\u5206\u533a\u8868\u76f8\u5173\u7684\u4fe1\u606f\uff0c\u901a\u8fc7\u8fd9\u5f20\u8868\u6211\u4eec\u53ef\u4ee5\u67e5\u8be2\u5230\u5206\u533a\u7684\u76f8\u5173\u4fe1\u606f\uff08\u6570\u636e\u5e93\u4e2d\u5df2\u5206\u533a\u7684\u8868\uff0c\u4ee5\u53ca\u5206\u533a\u8868\u7684\u5206\u533a\u548c\u6bcf\u4e2a\u5206\u533a\u7684\u6570\u636e\u4fe1\u606f\uff09\uff0c\u5206\u533a\u76f8\u5173\u8be6\u7ec6\u4fe1\u606f\u53c2\u89c1MySQL\u5206\u533a\u7ba1\u7406<\/a><\/div>\n
PROCESSLIST\uff1ashow processlist\u5176\u5b9e\u5c31\u662f\u4ece\u8fd9\u4e2a\u8868\u62c9\u53d6\u6570\u636e\uff0cPROCESSLIST\u7684\u6570\u636e\u662f\u4ed6\u7684\u57fa\u7840\u3002\u7531\u4e8e\u662f\u4e00\u4e2a\u5185\u5b58\u8868\uff0c\u6240\u4ee5\u6211\u4eec\u76f8\u5f53\u4e8e\u5728\u5185\u5b58\u4e2d\u67e5\u8be2\u4e00\u6837\uff0c\u8fd9\u4e9b\u64cd\u4f5c\u90fd\u662f\u5f88\u5feb\u7684\u3002<\/div>\n
INNODB_CMP_PER_INDEX\uff0cINNODB_CMP_PER_INDEX_RESET\uff1a\u8fd9\u4e24\u4e2a\u8868\u5b58\u50a8\u7684\u662f\u5173\u4e8e\u538b\u7f29INNODB\u4fe1\u606f\u8868\u7684\u65f6\u5019\u7684\u76f8\u5173\u4fe1\u606f,\u6709\u5173\u6574\u4e2a\u8868\u548c\u7d22\u5f15\u4fe1\u606f\u90fd\u6709.\u6211\u4eec\u77e5\u9053\u5bf9\u4e8e\u4e00\u4e2aINNODB\u538b\u7f29\u8868\u6765\u8bf4,\u4e0d\u7ba1\u662f\u6570\u636e\u8fd8\u662f\u4e8c\u7ea7\u7d22\u5f15\u90fd\u662f\u4f1a\u88ab\u538b\u7f29\u7684,\u56e0\u4e3a\u6570\u636e\u672c\u8eab\u4e5f\u53ef\u4ee5\u770b\u4f5c\u662f\u4e00\u4e2a\u805a\u96c6\u7d22\u5f15\u3002\u5173\u4e8e\u538b\u7f29\u8868\u5728information_schema\u7cfb\u5217\u5341\u4e00<\/a>\u6709\u4e9b\u8bb8\u7b80\u5355\u7684\u4ecb\u7ecd\u3002<\/div>\n
INNODB_CMPMEM \uff0cINNODB_CMPMEM_RESET\uff1a\u8fd9\u4e24\u4e2a\u8868\u662f\u5b58\u653e\u5173\u4e8eMySQL INNODB\u7684\u538b\u7f29\u9875\u7684buffer pool\u4fe1\u606f\uff0c\u4f46\u662f\u8981\u6ce8\u610f\u4e00\u70b9\u7684\u5c31\u662f,\u7528\u8fd9\u4e24\u4e2a\u8868\u6765\u6536\u96c6\u6240\u6709\u4fe1\u606f\u7684\u8868\u7684\u65f6\u5019,\u662f\u4f1a\u5bf9\u6027\u80fd\u9020\u6210\u4e25\u91cd\u7684\u5f71\u54cd\u7684,\u6240\u4ee5\u8bf4\u9ed8\u8ba4\u662f\u5173\u95ed\u72b6\u6001\u7684\u3002\u5982\u679c\u8981\u6253\u5f00\u8fd9\u4e2a\u529f\u80fd\u7684\u8bdd\u6211\u4eec\u8981\u8bbe\u7f6einnodb_cmp_per_index_enabled\u53c2\u6570\u4e3aON\u72b6\u6001\u3002<\/div>\n
INNODB_BUFFER_POOL_STATS\u00a0\uff1a\u8868\u63d0\u4f9b\u6709\u5173INNODB \u7684buffer pool\u76f8\u5173\u4fe1\u606f\uff0c\u548cshow engine innodb status\u63d0\u4f9b\u7684\u4fe1\u606f\u662f\u76f8\u540c\u7684\u3002\u4e5f\u662fshow engine innodb status\u7684\u4fe1\u606f\u6765\u6e90\u3002<\/div>\n
INNODB_BUFFER_PAGE_LRU\uff0cINNODB_BUFFER_PAGE\u00a0:\u7ef4\u62a4\u4e86INNODB LRU LIST\u7684\u76f8\u5173\u4fe1\u606f\uff0c\u8be6\u7ec6\u8bf7\u89c1\u5c0f\u7f16\u7b14\u8bb0innodb buffer pool\u5c0f\u89e3<\/a><\/div>\n
INNODB_BUFFER_PAGE\u00a0\uff1a\u8fd9\u4e2a\u8868\u5c31\u6bd4\u8f83\u5c4c\u4e86\uff0c\u5b58\u7684\u662fbuffer\u91cc\u9762\u7f13\u51b2\u7684\u9875\u6570\u636e\u3002\u67e5\u8be2\u8fd9\u4e2a\u8868\u4f1a\u5bf9\u6027\u80fd\u4ea7\u751f\u5f88\u4e25\u91cd\u7684\u5f71\u54cd\uff0c\u5343\u4e07\u4e0d\u8981\u518d\u6211\u4eec\u81ea\u5df1\u7684\u751f\u4ea7\u5e93\u4e0a\u9762\u6267\u884c\u8fd9\u4e2a\u8bed\u53e5\uff0c\u9664\u975e\u4f60\u80fd\u63a5\u53d7\u670d\u52a1\u77ed\u6682\u7684\u505c\u987f\uff0c\u8be6\u7ec6\u8bf7\u89c1\u5c0f\u7f16\u7b14\u8bb0innodb buffer pool\u5c0f\u89e3<\/a><\/div>\n
INNODB_SYS_DATAFILES\u00a0\uff1a\u8fd9\u5f20\u8868\u5c31\u662f\u8bb0\u5f55\u7684\u8868\u7684\u6587\u4ef6\u5b58\u50a8\u7684\u4f4d\u7f6e\u548c\u8868\u7a7a\u95f4\u7684\u4e00\u4e2a\u5bf9\u5e94\u5173\u7cfb(INNODB)<\/div>\n
INNODB_TEMP_TABLE_INFO\u00a0\uff1a\u8fd9\u4e2a\u8868\u60e0\u8bb0\u5f55\u6240\u6709\u7684INNODB\u7684\u6240\u6709\u7528\u6237\u4f7f\u7528\u5230\u7684\u4fe1\u606f\uff0c\u4f46\u662f\u53ea\u80fd\u8bb0\u5f55\u5728\u5185\u5b58\u4e2d\u548c\u6ca1\u6709\u6301\u4e45\u5316\u7684\u4fe1\u606f\u3002<\/div>\n
INNODB_METRICS\u00a0\uff1a\u63d0\u4f9bINNODB\u7684\u5404\u79cd\u7684\u6027\u80fd\u6307\u6570\uff0c\u662f\u5bf9INFORMATION_SCHEMA\u7684\u8865\u5145\uff0c\u6536\u96c6\u7684\u662fMySQL\u7684\u7cfb\u7edf\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u4e9b\u7edf\u8ba1\u4fe1\u606f\u90fd\u662f\u53ef\u4ee5\u624b\u52a8\u914d\u7f6e\u6253\u5f00\u8fd8\u662f\u5173\u95ed\u7684\u3002\u6709\u4ee5\u4e0b\u53c2\u6570\u90fd\u662f\u53ef\u4ee5\u63a7\u5236\u7684\uff1ainnodb_monitor_enable, innodb_monitor_disable, innodb_monitor_reset, innodb_monitor_reset_all\u3002<\/div>\n
INNODB_SYS_VIRTUAL\u00a0:\u8868\u5b58\u50a8\u7684\u662fINNODB\u8868\u7684\u865a\u62df\u5217\u7684\u4fe1\u606f\uff0c\u5f53\u7136\u8fd9\u4e2a\u8fd8\u662f\u6bd4\u8f83\u7b80\u5355\u7684\uff0c\u5728MySQL 5.7\u4e2d\uff0c\u652f\u6301\u4e24\u79cdGenerated Column\uff0c\u5373Virtual Generated Column\u548cStored Generated Column\uff0c\u524d\u8005\u53ea\u5c06Generated Column\u4fdd\u5b58\u5728\u6570\u636e\u5b57\u5178\u4e2d\uff08\u8868\u7684\u5143\u6570\u636e\uff09\uff0c\u5e76\u4e0d\u4f1a\u5c06\u8fd9\u4e00\u5217\u6570\u636e\u6301\u4e45\u5316\u5230\u78c1\u76d8\u4e0a\uff1b\u540e\u8005\u4f1a\u5c06Generated Column\u6301\u4e45\u5316\u5230\u78c1\u76d8\u4e0a\uff0c\u800c\u4e0d\u662f\u6bcf\u6b21\u8bfb\u53d6\u7684\u65f6\u5019\u8ba1\u7b97\u6240\u5f97\u3002\u5f88\u660e\u663e\uff0c\u540e\u8005\u5b58\u653e\u4e86\u53ef\u4ee5\u901a\u8fc7\u5df2\u6709\u6570\u636e\u8ba1\u7b97\u800c\u5f97\u7684\u6570\u636e\uff0c\u9700\u8981\u66f4\u591a\u7684\u78c1\u76d8\u7a7a\u95f4\uff0c\u4e0e\u5b9e\u9645\u5b58\u50a8\u4e00\u5217\u6570\u636e\u76f8\u6bd4\u5e76\u6ca1\u6709\u4f18\u52bf\uff0c\u56e0\u6b64\uff0cMySQL 5.7\u4e2d\uff0c\u4e0d\u6307\u5b9aGenerated Column\u7684\u7c7b\u578b\uff0c\u9ed8\u8ba4\u662fVirtual Column\u3002<\/div>\n
INNODB_CMP\uff0cINNODB_CMP_RESET\uff1a\u5b58\u50a8\u7684\u662f\u5173\u4e8e\u538b\u7f29INNODB\u4fe1\u606f\u8868\u7684\u65f6\u5019\u7684\u76f8\u5173\u4fe1\u606f\uff0c\u8be6\u7ec6\u8bf7\u89c1\u63a8\u8350\u7b14\u8bb0\u3002<\/div>\n
\u4e3a\u4ec0\u4e48\u628a\u8fd9\u4e9b\u8868\u5217\u4e3a\u7ba1\u7406\u76f8\u5173\u7684\u8868\u5462\uff0c\u56e0\u4e3a\u6211\u611f\u89c9\u50cf\u8fde\u63a5\uff0c\u5206\u533a\uff0c\u538b\u7f29\u8868\uff0cinnodb buffer pool\u7b49\u8868\uff0c\u6211\u4eec\u901a\u8fc7\u8fd9\u4e9b\u8868\u90fd\u80fd\u5f88\u6e05\u6670\u7684\u770b\u5230\u81ea\u5df1\u6570\u636e\u5e93\u7684\u76f8\u5173\u529f\u80fd\u7684\u72b6\u6001\uff0c\u7279\u522b\u662f\u6211\u4eec\u901a\u8fc7\u4e00\u4e9b\u53d8\u91cf\u66f4\u5bb9\u6613\u7aa5\u900fMySQL\u7684\u8fd0\u884c\u72b6\u6001\uff0c\u65b9\u4fbf\u6211\u4eec\u8fdb\u884c\u7ba1\u7406\u3002\u76f8\u5173\u7b14\u8bb0\u6709\u63a8\u8350innodb buffer pool\u5c0f\u89e3<\/a>\uff0cMySQL\u5206\u533a\u7ba1\u7406<\/a>\uff0cinformation_schema\u7cfb\u5217\u5341\u4e00<\/a>\u3002\u90fd\u662f\u5c0f\u7f16\u81ea\u5df1\u7684\u7b14\u8bb0\u3002<\/div>\n
6\uff1a\u5173\u4e8e\u8868\u4fe1\u606f\u548c\u7d22\u5f15\u4fe1\u606f\u7684\u4e00\u4e9b\u8868<\/strong><\/div>\n
TABLES\uff0cTABLESPACES\uff0cINNODB_SYS_TABLES \uff0cINNODB_SYS_TABLESPACES \uff1a<\/div>\n
TABLES\u8fd9\u5f20\u8868\u6beb\u65e0\u7591\u95ee\u4e86\uff0c\u5c31\u662f\u8bb0\u5f55\u7684\u6570\u636e\u5e93\u4e2d\u8868\u7684\u4fe1\u606f\uff0c\u5176\u4e2d\u5305\u62ec\u7cfb\u7edf\u6570\u636e\u5e93\u548c\u7528\u6237\u521b\u5efa\u7684\u6570\u636e\u5e93\u3002show table status like ‘test1’\\G\u7684\u6765\u6e90\u5c31\u662f\u8fd9\u4e2a\u8868\uff1b<\/div>\n
TABLESPACES \u5374\u662f\u6807\u6ce8\u7684\u6d3b\u8dc3\u8868\u7a7a\u95f4\u3002 \u8fd9\u4e2a\u8868\u662f\u4e0d\u63d0\u4f9b\u5173\u4e8einnodb\u7684\u8868\u7a7a\u95f4\u4fe1\u606f\u7684\uff0c\u5bf9\u4e8e\u6211\u4eec\u6765\u8bf4\u5e76\u6ca1\u6709\u592a\u5927\u4f5c\u7528\uff0c\u56e0\u4e3a\u6211\u4eec\u751f\u4ea7\u5e93\u662f\u5f3a\u5236INNODB\u7684\uff1b<\/div>\n
INNODB_SYS_TABLES \u8fd9\u5f20\u8868\u4f9d\u8d56\u7684\u662fSYS_TABLES\u6570\u636e\u5b57\u5178\u4e2d\u62c9\u53d6\u51fa\u6765\u7684\u3002\u6b64\u8868\u63d0\u4f9b\u4e86\u6709\u5173\u8868\u683c\u7684\u683c\u5f0f\u548c\u5b58\u50a8\u7279\u6027\uff0c\u5305\u62ec\u884c\u683c\u5f0f\uff0c\u538b\u7f29\u9875\u9762\u5927\u5c0f\u4f4d\u7ea7\u522b\u7684\u4fe1\u606f\uff08\u5982\u9002\u7528\uff09<\/div>\n
\u63d0\u4f9b\u7684\u662f\u5173\u4e8eINNODB\u7684\u8868\u7a7a\u95f4\u4fe1\u606f\uff0c\u5176\u5b9e\u548cSYS_TABLESPACES\u00a0\u4e2d\u7684INNODB\u4fe1\u606f\u662f\u4e00\u81f4\u7684\u3002<\/div>\n
STATISTICS\uff1a\u8fd9\u4e2a\u8868\u63d0\u4f9b\u7684\u662f\u5173\u4e8e\u8868\u7684\u7d22\u5f15\u4fe1\u606f\uff0c\u6240\u6709\u7d22\u5f15\u7684\u76f8\u5173\u4fe1\u606f\u3002<\/div>\n
INNODB_SYS_INDEXES\uff1a\u63d0\u4f9b\u76f8\u5173INNODB\u8868\u7684\u7d22\u5f15\u7684\u76f8\u5173\u4fe1\u606f\uff0c\u548cSYS_INDEXES \u8fd9\u4e2a\u8868\u5b58\u50a8\u7684\u4fe1\u606f\u57fa\u672c\u662f\u4e00\u6837\u7684\uff0c\u53ea\u4e0d\u8fc7\u540e\u8005\u63d0\u4f9b\u7684\u662f\u6240\u6709\u5b58\u50a8\u5f15\u64ce\u7684\u7d22\u5f15\u4fe1\u606f\uff0c\u540e\u8005\u53ea\u63d0\u4f9bINNODB\u8868\u7684\u7d22\u5f15\u4fe1\u606f\u3002<\/div>\n
INNODB_SYS_TABLESTATS\uff1a<\/div>\n
\u8fd9\u4e2a\u8868\u5c31\u6bd4\u8f83\u91cd\u8981\u4e86\uff0c\u8bb0\u5f55\u7684\u662fMySQL\u7684INNODB\u8868\u4fe1\u606f\u4ee5\u53caMySQL\u4f18\u5316\u5668\u4f1a\u9884\u4f30SQL\u9009\u62e9\u5408\u9002\u7684\u7d22\u5f15\u4fe1\u606f\uff0c\u5176\u5b9e\u5c31\u662fMySQL\u6570\u636e\u5e93\u7684\u7edf\u8ba1\u4fe1\u606f<\/div>\n
\u8fd9\u4e2a\u8868\u7684\u8bb0\u5f55\u662f\u8bb0\u5f55\u5728\u5185\u5b58\u5f53\u4e2d\u7684\uff0c\u662f\u4e00\u4e2a\u5185\u5b58\u8868\uff0c\u6bcf\u6b21\u91cd\u542f\u540e\u5c31\u4f1a\u91cd\u65b0\u8bb0\u5f55\uff0c\u6240\u4ee5\u53ea\u80fd\u8bb0\u5f55\u4ece\u4e0a\u6b21\u91cd\u542f\u540e\u7684\u6570\u636e\u5e93\u7edf\u8ba1\u4fe1\u606f\u3002\u6709\u4e86\u8fd9\u4e2a\u8868\uff0c\u6211\u4eec\u5bf9\u4e8e\u7d22\u5f15\u7684\u7ef4\u62a4\u5c31\u66f4\u52a0\u65b9\u4fbf\u4e86\uff0c\u6211\u4eec\u53ef\u4ee5\u67e5\u8be2\u7d22\u5f15\u7684\u4f7f\u7528\u6b21\u6570\uff0c\u65b9\u4fbf\u6e05\u7406\u5220\u9664\u4e0d\u5e38\u7528\u7684\u7d22\u5f15\uff0c\u63d0\u9ad8\u8868\u7684\u66f4\u65b0\u63d2\u5165\u7b49\u6548\u7387\uff0c\u8282\u7701\u78c1\u76d8\u7a7a\u95f4\u3002<\/div>\n
INNODB_SYS_FIELDS\u00a0\uff1a\u8fd9\u4e2a\u8868\u8bb0\u5f55\u7684\u662fINNODB\u7684\u8868\u7d22\u5f15\u5b57\u6bb5\u4fe1\u606f\uff0c\u4ee5\u53ca\u5b57\u6bb5\u7684\u6392\u540d<\/div>\n
INNODB_FT_CONFIG\u00a0:\u8fd9\u5f20\u8868\u5b58\u7684\u662f\u5168\u6587\u7d22\u5f15\u7684\u4fe1\u606f<\/div>\n
INNODB_FT_DEFAULT_STOPWORD\uff1a\u8fd9\u4e2a\u8868\u5b58\u653e\u7684\u662fstopword\u00a0\u7684\u4fe1\u606f,\u662f\u548c\u5168\u6587\u7d22\u5f15\u5339\u914d\u8d77\u6765\u4f7f\u7528\u7684\uff0c\u548cinnodb\u7684\u00a0INFORMATION_SCHEMA.INNODB_FT_DEFAULT_STOPWORD\u00a0\u662f\u76f8\u540c\u7684\uff0c\u8fd9\u4e2aSTOPWORD\u5fc5\u987b\u662f\u5728\u521b\u5efa\u7d22\u5f15\u4e4b\u524d\u521b\u5efa\uff0c\u800c\u4e14\u5fc5\u987b\u6307\u5b9a\u5b57\u6bb5\u4e3avarchar\u3002stopword\u00a0\u4e5f\u5c31\u662f\u6211\u4eec\u6240\u8bf4\u7684\u505c\u6b62\u8bcd\uff0c\u5168\u6587\u68c0\u7d22\u65f6\uff0c\u505c\u6b62\u8bcd\u5217\u8868\u5c06\u4f1a\u88ab\u8bfb\u53d6\u548c\u68c0\u7d22\uff0c\u5728\u4e0d\u540c\u7684\u5b57\u7b26\u96c6\u548c\u6392\u5e8f\u65b9\u5f0f\u4e0b\uff0c\u4f1a\u9020\u6210\u547d\u4e2d\u5931\u8d25\u6216\u8005\u627e\u4e0d\u5230\u6b64\u6570\u636e\uff0c\u8fd9\u53d6\u51b3\u4e8e\u505c\u6b62\u8bcd\u7684\u4e0d\u540c\u7684\u6392\u5e8f\u65b9\u5f0f\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u529f\u80fd\u7b5b\u9009\u4e0d\u5fc5\u8981\u5b57\u6bb5\u3002<\/div>\n
INNODB_FT_INDEX_TABLE\uff1a\u8fd9\u4e2a\u8868\u5b58\u50a8\u7684\u662f\u5173\u4e8eINNODB\u8868\u6709\u5168\u6587\u7d22\u5f15\u7684\u7d22\u5f15\u4f7f\u7528\u4fe1\u606f\u7684\uff0c\u540c\u6837\u8fd9\u4e2a\u8868\u4e5f\u662f\u8981\u8bbe\u7f6einnodb_ft_aux_table\u4ee5\u540e\u624d\u80fd\u591f\u4f7f\u7528\u7684\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\u662f\u7a7a\u7684<\/div>\n
INNODB_FT_INDEX_CACHE\u00a0\uff1a\u8fd9\u5f20\u8868\u5b58\u653e\u7684\u662f\u63d2\u5165\u524d\u7684\u8bb0\u5f55\u4fe1\u606f\uff0c\u4e5f\u662f\u4e3a\u4e86\u907f\u514dDML\u65f6\u5019\u6602\u8d35\u7684\u7d22\u5f15\u91cd\u7ec4<\/div>\n
7\uff1a\u5173\u4e8eMySQL\u4f18\u5316\u76f8\u5173\u7684\u4e00\u4e9b\u8868<\/strong><\/div>\n
OPTIMIZER_TRACE\u00a0\uff1a\u63d0\u4f9b\u7684\u662f\u4f18\u5316\u8ddf\u8e2a\u529f\u80fd\u4ea7\u751f\u7684\u4fe1\u606f.\u5173\u4e8e\u8fd9\u4e2a\u6211\u4e5f\u8c22\u4e86\u505a\u4e86\u4e00\u4e2a\u5c0f\u6d4b\u8bd5\uff0cMySQL\u8ffd\u8e2a\u4f18\u5316\u5668\u5c0f\u8bd5<\/a><\/div>\n
PROFILING\uff1aSHOW PROFILE\u53ef\u4ee5\u6df1\u5165\u7684\u67e5\u770b\u670d\u52a1\u5668\u6267\u884c\u8bed\u53e5\u7684\u5de5\u4f5c\u60c5\u51b5\u3002\u4ee5\u53ca\u4e5f\u80fd\u5e2e\u52a9\u4f60\u7406\u89e3\u6267\u884c\u8bed\u53e5\u6d88\u8017\u65f6\u95f4\u7684\u60c5\u51b5\u3002\u4e00\u4e9b\u9650\u5236\u662f\u5b83\u6ca1\u6709\u5b9e\u73b0\u7684\u529f\u80fd\uff0c\u4e0d\u80fd\u67e5\u770b\u548c\u5256\u6790\u5176\u4ed6\u8fde\u63a5\u7684\u8bed\u53e5\uff0c\u4ee5\u53ca\u5256\u6790\u65f6\u6240\u5f15\u8d77\u7684\u6d88\u8017\u3002<\/div>\n
SHOW PROFILES\u663e\u793a\u6700\u8fd1\u53d1\u7ed9\u670d\u52a1\u5668\u7684\u591a\u6761\u8bed\u53e5\uff0c\u6761\u6570\u6839\u636e\u4f1a\u8bdd\u53d8\u91cfprofiling_history_size\u5b9a\u4e49\uff0c\u9ed8\u8ba4\u662f15\uff0c\u6700\u5927\u503c\u4e3a100\u3002\u8bbe\u4e3a0\u7b49\u4ef7\u4e8e\u5173\u95ed\u5206\u6790\u529f\u80fd\u3002\u8be6\u7ec6\u4fe1\u606f\u8bf7\u89c1MySQL profile<\/div>\n
INNODB_FT_BEING_DELETED,INNODB_FT_DELETED:\u00a0INNODB_FT_BEING_DELETED\u00a0\u8fd9\u5f20\u8868\u662fINNODB_FT_DELETED\u7684\u4e00\u4e2a\u5feb\u7167,\u53ea\u5728OPTIMIZE TABLE\u00a0\u7684\u65f6\u5019\u624d\u4f1a\u4f7f\u7528\u3002\u8be6\u7ec6\u4fe1\u606f\u8be6\u89c1\u6211\u7684OPTIMIZE TABLE \u5c0f\u89e3<\/a><\/div>\n
8\uff1a\u5173\u4e8eMySQL\u4e8b\u7269\u548c\u9501\u7684\u76f8\u5173\u7684\u4e00\u4e9b\u8868<\/strong><\/div>\n
INNODB_LOCKS:\u73b0\u5728\u83b7\u53d6\u7684\u9501\uff0c\u4f46\u662f\u4e0d\u542b\u6ca1\u6709\u83b7\u53d6\u7684\u9501\uff0c\u800c\u4e14\u53ea\u662f\u9488\u5bf9INNODB\u7684\u3002<\/div>\n
INNODB_LOCK_WAITS\uff1a\u7cfb\u7edf\u9501\u7b49\u5f85\u76f8\u5173\u4fe1\u606f\uff0c\u5305\u542b\u4e86\u963b\u585e\u7684\u4e00\u884c\u6216\u8005\u591a\u884c\u7684\u8bb0\u5f55\uff0c\u800c\u4e14\u8fd8\u6709\u9501\u8bf7\u6c42\u548c\u88ab\u963b\u585e\u6539\u8bf7\u6c42\u7684\u9501\u4fe1\u606f\u7b49\u3002<\/div>\n
INNODB_TRX\uff1a\u5305\u542b\u4e86\u6240\u6709\u6b63\u5728\u6267\u884c\u7684\u7684\u4e8b\u7269\u76f8\u5173\u4fe1\u606f\uff08INNODB\uff09\uff0c\u800c\u4e14\u5305\u542b\u4e86\u4e8b\u7269\u662f\u5426\u88ab\u963b\u585e\u6216\u8005\u8bf7\u6c42\u9501\u3002<\/div>\n
\u6211\u4eec\u901a\u8fc7\u8fd9\u4e9b\u8868\u5c31\u80fd\u591f\u5f88\u65b9\u4fbf\u7684\u67e5\u8be2\u51fa\u6765\u672a\u7ed3\u675f\u7684\u4e8b\u7269\u548c\u88ab\u963b\u585e\u7684\u8fdb\u7a0b\uff0c\u8fd9\u662f\u4e0d\u662f\u66f4\u65b9\u4fbf\u4e86\uff0c\u8be6\u7ec6\u53ef\u89c1information_schema\u7cfb\u5217\u516b(\u4e8b\u7269\uff0c\u9501)<\/a><\/div>\n<\/div>\n<\/div>\n<\/article>\n","protected":false},"excerpt":{"rendered":"

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