sqlplus "\/as sysdba"<\/code>\u8fdb\u5165oracle\u6570\u636e\u5e93\uff0c\u8fd9\u662f\u7528sys\u7528\u6237\u901a\u8fc7windows\u7cfb\u7edf\u7684\u63a7\u5236\u53f0\u547d\u4ee4\u7a97\u53e3\u767b\u5f55\u5230oracle\u6570\u636e\u5e93\u7684\u547d\u4ee4\u7a97\u53e3\u3002select status from v$instance;<\/code>\u547d\u4ee4\u53ef\u67e5\u8be2\u6570\u636e\u5e93\u662f\u5426\u6210\u529f\u5b89\u88c5\u3002v$<\/code>\u5f00\u5934\u7684\u662foracle\u7684\u52a8\u6001\u8868\uff0cv$instance<\/code>\u4e3aoracle\u6570\u636e\u5e93\u7684\u52a8\u6001\u8868\u4e4b\u4e00\uff0c\u8be5\u8868\u8bb0\u5f55\u6570\u636e\u5e93\u5b9e\u4f8b\u7684\u5404\u79cd\u4fe1\u606f\u3002\u4e00\u4e2a\u5173\u7cfb\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u7684\u5b9e\u4f8b\u4e2d\u53ef\u4ee5\u5efa\u7acb\u591a\u4e2a\u6570\u636e\u5e93\uff0c\u4e00\u4e2a\u6570\u636e\u5e93\u4e2d\u53ef\u4ee5\u5efa\u7acb\u591a\u4e2a\u6a21\u5f0f\uff0c\u4e00\u4e2a\u6a21\u5f0f\u4e0b\u53ef\u4ee5\u5b9a\u4e49\u591a\u4e2a\u8868\u3001\u89c6\u56fe\u3001\u7d22\u5f15\u7b49\u6570\u636e\u5e93\u5bf9\u8c61<\/strong>\u3002
\n\u6570\u636e\u5e93\u8bed\u53e5\u4ee5;<\/code>\u7ed3\u675f\u3002<\/p>\nshow user;<\/code>\uff1a\u67e5\u8be2\u5f53\u524d\u6570\u636e\u5e93\u7528\u6237\u3002sys\u7528\u6237\u662foracle\u6570\u636e\u5e93\u7684\u8d85\u7ea7\u7528\u6237\uff0c\u76f8\u5f53\u4e8ewindows\u7684administrator\u7528\u6237\u3002sys\u6743\u9650\u7279\u522b\u5927\uff0c\u53ef\u4ee5\u542f\u52a8\u3001\u5173\u95ed\u3001\u6570\u636e\u5e93\uff0c\u751a\u81f3\u53ef\u4ee5\u5220\u9664\u6574\u4e2a\u6570\u636e\u5e93\u3002
\nshow parameter db_name<\/code>\uff1a\u67e5\u770b\u6570\u636e\u5e93\u540d\u79f0\u3002
\nshow parameter<\/code>\uff1a\u67e5\u770b\u6570\u636e\u5e93\u7684\u5404\u79cd\u53c2\u6570\u503c\u3002<\/p>\nCREATE USER xxx IDENTIFIED BY xxx;<\/code>\u65b0\u5efa\u7528\u6237\u3002
\nCREATE SCHEMA <\u6a21\u5f0f\u540d> AUTHORIZATION <\u7528\u6237\u540d>;<\/code>\u6a21\u5f0f\u5b9a\u4e49\u8bed\u53e5\u3002<\u6a21\u5f0f\u540d><\/code>\u7f3a\u7701\u65f6\uff0c\u9690\u542b\u4e3a<\u7528\u6237\u540d><\/code>\uff0c\u8c03\u7528\u8be5\u547d\u4ee4\u7684\u7528\u6237\u5fc5\u987b\u62e5\u6709\u6570\u636e\u5e93\u7ba1\u7406\u5458\u6743\u9650\uff0c\u6216\u8005\u83b7\u5f97\u4e86\u6570\u636e\u5e93\u7ba1\u7406\u5458\u6388\u4e88\u7684CREATE SCHEMA<\/code>\u7684\u6743\u9650\u3002<\/p>\nCREATE SCHEMA <\u6a21\u5f0f\u540d> AUTHORIZATION <\u7528\u6237\u540d>\nCREATE TABLE TAB1(\n\n ); \/\/\u4e3a\u7528\u6237\u521b\u5efa\u4e00\u5f20\u8868\u3002<\/code><\/pre>\nDROP SCHEMA <\u6a21\u5f0f\u540d><CASCADE | RESTRICT><\/code>\u5220\u9664\u6a21\u5f0f\uff0c\u5176\u4e2dCASCADE,RESTRICT<\/code>\u5fc5\u9009\u5176\u4e00\uff0c\u9009\u62e9CASCADE(\u7ea7\u8054)<\/code>\u5c06\u5b8c\u5168\u5220\u9664\u8be5\u6a21\u5f0f\uff0c\u5305\u62ec\u5176\u4e2d\u6240\u6709\u7684\u6570\u636e\u5e93\u5bf9\u8c61\uff1b\u9009\u62e9RESTRICT(\u9650\u5236)<\/code>\u8868\u793a\u53ea\u6709\u5f53\u6a21\u5f0f\u4e3a\u7a7a\u65f6\u624d\u5220\u9664\uff0c\u5982\u679c\u6a21\u5f0f\u4e2d\u5b9a\u4e49\u4e86\u4e0b\u5c5e\u7684\u6570\u636e\u5e93\u5bf9\u8c61(\u8868\uff0c\u89c6\u56fe\u7b49)\uff0c\u5219\u62d2\u7edd\u6267\u884c\u8bed\u53e5\u3002
\n\u521b\u5efa\u4e00\u4e2a\u6a21\u5f0f\u5c31\u5efa\u7acb\u4e86\u4e00\u4e2a\u6570\u636e\u5e93\u7684\u540d\u5b57\u7a7a\u95f4\uff0c\u4e00\u4e2a\u6846\u67b6\uff0c<\/p>\nCREATE TABLE <\u8868\u540d>\n (<\u5217\u540d> <\u6570\u636e\u7c7b\u578b> [\u5217\u7ea7\u5b8c\u6574\u6027\u7ea6\u675f\u6761\u4ef6\uff0c\u53ef\u7701],\n <\u5217\u540d> <\u6570\u636e\u7c7b\u578b> [\u5217\u7ea7\u5b8c\u6574\u6027\u7ea6\u675f\u6761\u4ef6],\n ...\n <\u5217\u540d> <\u6570\u636e\u7c7b\u578b> [\u5217\u7ea7\u5b8c\u6574\u6027\u7ea6\u675f\u6761\u4ef6],\n PRIMARY KEY(), \/\/ \u5b9a\u4e49\u4e3b\u7801\n );<\/code><\/pre>\n\u5b9a\u4e49\u57fa\u672c\u8868\u547d\u4ee4\uff0c\u5efa\u8868\u7684\u540c\u65f6\u53ef\u4ee5\u5b9a\u4e49\u4e0e\u8be5\u8868\u6709\u5173\u7684\u5b8c\u6574\u6027\u7ea6\u675f\u6761\u4ef6\uff0c\u8fd9\u4e9b\u5b8c\u6574\u6027\u7ea6\u675f\u6761\u4ef6\u88ab\u5b58\u4e8e\u7cfb\u7edf\u7684\u6570\u636e\u5b57\u5178\u4e2d\uff0c\u5f53\u7528\u6237\u64cd\u4f5c\u8868\u4e2d\u6570\u636e\u65f6\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u4f1a\u81ea\u52a8\u68c0\u67e5\u8be5\u64cd\u4f5c\u662f\u5426\u8fdd\u80cc\u8fd9\u4e9b\u7ea6\u675f\u6027\u6761\u4ef6\u3002\u5e38\u89c1\u7684\u7ea6\u675f\u6761\u4ef6\u6709PRIMARY KEY<\/code>\u4e3b\u7801\uff0cUNIQUE<\/code>\u53d6\u552f\u4e00\u503c\uff0cNOT NULL<\/code>\u4e0d\u80fd\u53d6\u7a7a\u503c\u3002<\/p>\n\u4fee\u6539\u57fa\u672c\u8868<\/strong><\/p>\nALTER TABLE<\u8868\u540d>\nADD [COLOMN] <\u65b0\u5217\u540d> <\u6570\u636e\u7c7b\u578b> [\u5b8c\u6574\u6027\u7ea6\u675f] \/\/ []\u5185\u8868\u793a\u53ef\u7f3a\u7701\nADD [<\u8868\u7ea7\u5b8c\u6574\u6027\u7ea6\u675f>]\nDROP [COLUMN] <\u5217\u540d> [CASCADE | RESTRICT] \/\/ \u5220\u9664\u67d0\u5217\nDROP CONSTRAINT <\u5b8c\u6574\u6027\u7ea6\u675f> [CASCADE | RESTRICT] \/\/\u5220\u9664\u67d0\u5217\u7684\u5b8c\u6574\u6027\u7ea6\u675f\u6761\u4ef6\nALTER COLUMN <\u5217\u540d> <\u6570\u636e\u7c7b\u578b>; \/\/\u4fee\u6539\u67d0\u5217\u539f\u6709\u7684\u5217\u5b9a\u4e49<\/code><\/pre>\nDROP TABLE <\u8868\u540d> [CASCADE | RESTRICT]<\/code>\uff1a\u5220\u9664\u57fa\u672c\u8868\u3002\u9ed8\u8ba4\u4ee5RESTRICT<\/code>\u65b9\u5f0f\u3002<\/p>\n\u63d2\u5165\u5143\u7ec4<\/strong><\/p>\nINSERT\nINTO <> [(<\u5c5e\u6027\u52171> [,<\u5c5e\u6027\u52172>]... )]\nVALUES (<\u5e38\u91cf1> [,<\u5e38\u91cf2>]...);<\/code><\/pre>\n\u5c06\u65b0\u5143\u7ec4\u63d2\u5165\u6307\u5b9a\u8868\u4e2d\u3002INTO\u5b50\u53e5\u4e2d\u6ca1\u6709\u51fa\u73b0\u7684\u5c5e\u6027\u5217\uff0c\u65b0\u5143\u7ec4\u5728\u8fd9\u4e9b\u5217\u4e0a\u5c06\u53d6\u7a7a\u503c\u3002\u5bf9\u4e8e\u90a3\u4e9b\u8bf4\u660e\u4e86NOT NULL<\/code>\u7684\u5217\u4e0d\u53ef\u4e3a\u7a7a\uff0c\u5426\u5219\u62a5\u9519\u3002
\n\u5f53\u5c5e\u6027\u5217\u4e3a\u7a7a\u65f6\uff0c\u8868\u793a\u8981\u5728\u6240\u6709\u5217\u4e0a\u90fd\u6307\u5b9a\u503c\uff0c\u5c5e\u6027\u5217\u7684\u6b21\u5e8f\u4e0eCREATE TABLE<\/code>\u7684\u6b21\u5e8f\u76f8\u540c\u3002<\/p>\n\u5b9e\u9a8c\u7528\u5230<\/h4>\n
\u5b9e\u9a8c\u4e00<\/strong>
\nCREATE USER zyh IDENTIFIED BY zyh123;<\/code>\uff1a\u521b\u5efa\u65b0\u7528\u6237zyh
\nGRANT DBA TO zyh;<\/code>\uff1a\u6388\u4e88\u5176\u6743\u9650\u3002
\nCONNECT zyh\/zyh123;<\/code>\uff1a\u4ee5\u8be5\u7528\u6237\u8eab\u4efd\u767b\u5f55Oracle\u3002<\/p>\n\u521b\u5efa\u57fa\u8868\u56fe\u4e66\u7ba1\u7406\u7cfb\u7edf<\/p>\n
CREATE TABLE \u56fe\u4e66\n (\u56fe\u4e66\u7f16\u53f7 CHAR(4),\n \u5206\u7c7b\u53f7 CHAR(4) NOT NULL,\n \u4e66\u540d VARCHAR(12),\n \u4f5c\u8005 VARCHAR(5),\n \u51fa\u7248\u5355\u4f4d VARCHAR(10),\n \u5355\u4ef7 DEC(5,2),\n PRIMARY KEY(\u56fe\u4e66\u7f16\u53f7));<\/code><\/pre>\nalter table \u56fe\u4e66 modify \u4e66\u540d varchar(20);<\/code>\u4e2d\u9014\u4fee\u6539\u8868\u56fe\u4e66\u91cc\u4e66\u540d\u5217\u7684\u7c7b\u578b\u957f\u5ea6\u3002
\nALTER TABLE \u56fe\u4e66 MODIFY \u51fa\u7248\u5355\u4f4d VARCHAR(20);<\/code>
\nALTER TABLE \u8bfb\u8005 MODIFY \u5355\u4f4d VARCHAR(20);<\/code><\/p>\n\u6570\u636e\u5e93\u5b89\u5168\u6027\u673a\u5236<\/h4>\n
\u6570\u636e\u5e93\u7684\u5b89\u5168\u6027\u662f\u6307\u4fdd\u62a4\u6570\u636e\u5e93\u4ee5\u9632\u6b62\u4e0d\u5408\u6cd5\u4f7f\u7528\u6240\u9020\u6210\u7684\u6570\u636e\u6cc4\u9732\u3001\u66f4\u6539\u6216\u7834\u574f<\/code>\u3002
\n\u5bf9\u6570\u636e\u5e93\u5b89\u5168\u6027\u4ea7\u751f\u5a01\u80c1\u7684\u56e0\u7d20\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762<\/p>\n\n\u975e\u6388\u6743\u7528\u6237\u5bf9\u6570\u636e\u7684\u6076\u610f\u5b58\u53d6\u548c\u7834\u574f
\n\u6570\u636e\u5e93\u4e2d\u91cd\u8981\u6216\u8005\u654f\u611f\u7684\u6570\u636e\u88ab\u6cc4\u9732
\n\u5b89\u5168\u73af\u5883\u7684\u8106\u5f31\u6027<\/p>\n<\/blockquote>\n
TCSEC\/TDI\u5b89\u5168\u7ea7\u522b\u5212\u5206\uff1aD\u3001C1\u3001C2\u3001B1\u3001B2\u3001B3\u3001A1\uff0c\u5b89\u5168\u7ea7\u522b\u9010\u6e10\u589e\u9ad8\u3002<\/p>\n
\u5728\u4e00\u822c\u7684\u8ba1\u7b97\u673a\u7cfb\u7edf\u4e2d\uff0c\u5b89\u5168\u63aa\u65bd\u662f\u4e00\u7ea7\u4e00\u7ea7\u5c42\u5c42\u8bbe\u7f6e\u7684\u3002<\/p>\n
![\"\"](\"http:\/\/www.zyhcoding.club:80\/wp-content\/uploads\/2021\/05\/\u6570\u636e\u5e93\u5b89\u5168\u6027\u673a\u5236.png\")
<\/p>\n
\u5e38\u7528\u7684\u7528\u6237\u8eab\u4efd\u9274\u522b\u65b9\u6cd5\u6709\uff1a\u9759\u6001\u53e3\u4ee4\u9274\u522b\u3001\u52a8\u6001\u53e3\u4ee4\u9274\u522b\u3001\u751f\u7269\u7279\u5f81\u9274\u522b\u3001\u667a\u80fd\u5361\u9274\u522b<\/code><\/p>\n\u6570\u636e\u5e93\u7684\u5b58\u53d6\u63a7\u5236\u673a\u5236\uff1a\u786e\u4fdd\u53ea\u6388\u6743\u7ed9\u6709\u8d44\u683c\u7684\u7528\u6237\u8bbf\u95ee\u6570\u636e\u5e93\u7684\u6743\u9650\uff0c\u540c\u65f6\u4ee4\u6240\u6709\u672a\u88ab\u6388\u6743\u7684\u4eba\u5458\u65e0\u6cd5\u63a5\u8fd1\u6570\u636e\u3002
\n\u5b58\u53d6\u63a7\u5236\u673a\u5236\u4e3b\u8981\u5305\u62ec\u5b9a\u4e49\u7528\u6237\u6743\u9650<\/code>\u548c\u5408\u6cd5\u6743\u9650\u68c0\u67e5<\/code>\u4e24\u90e8\u5206\u3002<\/p>\n\u6709\u4e24\u79cd\u5b58\u53d6\u63a7\u5236\u65b9\u6cd5\uff1a\u81ea\u4e3b\u5b58\u53d6\u63a7\u5236\u548c\u5f3a\u5236\u5b58\u53d6\u63a7\u5236<\/p>\n
\u81ea\u4e3b\u5b58\u53d6\u63a7\u5236<\/h5>\n
\u7528\u6237\u201c\u81ea\u4e3b\u201d\u5730\u51b3\u5b9a\u5c06\u6570\u636e\u7684\u5b58\u53d6\u6743\u9650\u6388\u4e88\u4f55\u4eba\u3001\u51b3\u5b9a\u662f\u5426\u4e5f\u5c06\u201c\u6388\u6743\u201d\u5730\u6743\u9650\u6388\u4e88\u522b\u4eba\u3002\u56e0\u6b64\u79f0\u8fd9\u6837\u7684\u5b58\u53d6\u63a7\u5236\u662f\u81ea\u4e3b\u5b58\u53d6\u63a7\u5236\u3002<\/p>\n
GRANT <\u6743\u9650>\nON <\u5bf9\u8c61>\nTO <\u7528\u6237>\n[WITH GRANT OPTION];<\/code><\/pre>\n\u5c06\u5bf9\u6307\u5b9a\u64cd\u4f5c\u5bf9\u8c61\u7684\u6307\u5b9a\u64cd\u4f5c\u6743\u9650\u6388\u4e88\u6307\u5b9a\u7684\u7528\u6237\u3002\u5982\u679c\u6307\u5b9a\u4e86WITH GRANT OPTION\u9009\u9879\uff0c\u5219\u83b7\u5f97\u6743\u9650\u7684\u7528\u6237\u8fd8\u53ef\u4ee5\u628a\u6743\u9650\u53ca\u5176\u5b50\u96c6\u8f6c\u6388\u7ed9\u5176\u4ed6\u7528\u6237\u3002<\/p>\n
REVOKE <\u6743\u9650>\nON <\u5bf9\u8c61>\nFROM <> [CASCADE|RESTRICT];<\/code><\/pre>\nREVOKE\u8bed\u53e5\u7528\u6765\u6536\u56de\u6743\u9650\u3002CASCADE<\/code>\u7ea7\u8054\u6536\u56de\u4e86\u7531\u8be5\u5bf9\u8c61\u6388\u4e88\u51fa\u53bb\u7684\u6240\u6709\u7528\u6237\u7684\u6743\u9650\u3002<\/p>\nCREATE USER <username> [WITH DBA|RESOURCE|CONNECT];<\/code><\/pre>\n\u53ea\u7528\u7cfb\u7edf\u7684\u8d85\u7ea7\u7528\u6237\u624d\u6709\u6743\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6570\u636e\u5e93\u7528\u6237\u3002\u65b0\u521b\u5efa\u7684\u7528\u6237\u6709\u4e09\u79cd\u6743\u9650\uff1aDBA RESOURCE CONNECT<\/code>\u3002<\/p>\n\n\u62e5\u6709CONNECT<\/code>\u6743\u9650\u7684\u7528\u6237\u4e0d\u80fd\u521b\u5efa\u65b0\u7528\u6237\u3001\u6a21\u5f0f\u3001\u57fa\u672c\u8868\uff0c\u53ea\u80fd\u767b\u9646\u6570\u636e\u5e93\u3002
\n\u62e5\u6709RESOURCE<\/code>\u6743\u9650\u7684\u7528\u6237\u4e0d\u80fd\u521b\u5efa\u65b0\u7528\u6237\u3001\u6a21\u5f0f\uff0c\u80fd\u521b\u5efa\u57fa\u672c\u8868
\n\u62e5\u6709DBA<\/code>\u6743\u9650\u7684\u7528\u6237\u662f\u7cfb\u7edf\u7684\u8d85\u7ea7\u7528\u6237\uff0c\u62e5\u6709\u6240\u6709\u6743\u9650\u3002<\/p>\n<\/blockquote>\nCREATE ROLE <rolename>\n\nGRANT <\u6743\u9650>\nON <\u5bf9\u8c61>\nTO <\u89d2\u8272>;\n\nGRANT <\u89d2\u8272>\nTO <\u89d2\u8272|\u7528\u6237>\n[WITH ADMIN OPTION];\n\nREVOKE <\u6743\u9650>\nON <\u5bf9\u8c61>\nFROM <\u89d2\u8272>;<\/code><\/pre>\n\u6570\u636e\u5e93\u89d2\u8272\u662f\u88ab\u547d\u540d\u7684\u4e00\u7ec4\u4e0e\u6570\u636e\u5e93\u64cd\u4f5c\u76f8\u5173\u7684\u6743\u9650\uff0c\u89d2\u8272\u662f\u6743\u9650\u7684\u96c6\u5408\u3002
\n\u5982\u679c\u6307\u5b9a\u4e86WITH ADMIN OPTION\u5b50\u53e5\uff0c\u5219\u83b7\u5f97\u67d0\u79cd\u6743\u9650\u7684\u89d2\u8272\u6216\u7528\u6237\u8fd8\u53ef\u4ee5\u8f6c\u6388\u6743\u9650\u3002<\/p>\n
\u6570\u636e\u67e5\u8be2<\/h4>\nSELECT [ALL|DISTINCT] <\u76ee\u6807\u5217\u8868\u8fbe\u5f0f>\nFRPM <\u8868\u540d\u6216\u89c6\u56fe\u540d> [, <\u8868\u540d\u6216\u89c6\u56fe\u540d>] [AS <\u522b\u540d>]\nWHERE <\u6761\u4ef6\u8868\u8fbe\u5f0f>\nGROUP BY <\u5217\u540d1> [HAVING <\u6761\u4ef6\u8868\u8fbe\u5f0f>]\nORDER BY <\u5217\u540d2> [ASC|DESC];\n\n\/\/\u67e5\u8be2\u6761\u4ef6\n= > < <= >= != <> !> !< NOT\nBETWEEN .. AND .., NOT BETWEEN AND\nIN, NOT IN\nLIKE, NOT LIKE\nIS NULL, IS NOT NULL\nAND, OR, NOT\nEXIST<\/code><\/pre>\n\u6839\u636eWHERE\u5b50\u53e5\u7684\u6761\u4ef6\u8868\u8fbe\u5f0f\u4eceFROM\u5b50\u53e5\u6307\u5b9a\u7684\u57fa\u672c\u8868\u3001\u8bd5\u56fe\u6216\u6d3e\u751f\u8868\u4e2d\u627e\u51fa\u6ee1\u8db3\u6761\u4ef6\u7684\u5143\u7ec4\uff0c\u518d\u6309SELECT\u5b50\u53e5\u4e2d\u7684\u76ee\u6807\u5217\u8868\u8fbe\u5f0f\u9009\u51fa\u5143\u7ec4\u4e2d\u7684\u5c5e\u6027\u503c\u5f62\u6210\u7ed3\u679c\u8868\u3002
\nSELECT\u8bed\u53e5\u7684\u6267\u884c\u8fc7\u7a0b\u4e00\u5b9a\u4e0d\u80fd\u4e71\u3002WHERE->GROUP->HAVING->ORDER
\nORDER BY<\/code>\u5b50\u53e5\u5bf9\u67e5\u8be2\u7ed3\u679c\u6309\u7167\u5c5e\u6027\u7684\u5347\u964d\u6765\u6392\u5e8f\u3002
\nGROUP BY<\/code>\u5b50\u53e5\u5c06\u67e5\u8be2\u7ed3\u679c\u6309\u7167\u4e00\u5217\u6216\u591a\u5217\u7684\u503c\u5206\u7ec4\uff0c\u503c\u76f8\u7b49\u7684\u4e3a\u4e00\u7ec4\u3002\u5bf9\u67e5\u8be2\u7ed3\u679c\u5206\u7ec4\u7684\u76ee\u7684\u662f\u7ec6\u5316\u805a\u96c6\u51fd\u6570\u7684\u4f5c\u7528\u5bf9\u8c61\u3002\u805a\u96c6\u51fd\u6570\u7684\u64cd\u4f5c\u5bf9\u8c61\u662f\u4e00\u4e2a\u7ec4\uff0c\u5982\u679c\u6ca1\u6709\u5206\u7ec4\u7684\u8bdd\u5c31\u662f\u5bf9\u6574\u4e2a\u8868\u64cd\u4f5c\u3002HAVING<\/code>\u77ed\u8bed\u4f5c\u7528\u4e8e\u7ec4\uff0c\u53ea\u9009\u62e9\u6ee1\u8db3\u6761\u4ef6\u7684\u7ec4\u8f93\u51fa\u3002<\/p>\n\u5b57\u7b26\u5339\u914d<\/h5>\n
\u8c13\u8bcdLIKE<\/code>\u53ef\u4ee5\u7528\u6765\u8fdb\u884c\u5b57\u7b26\u4e32\u7684\u5339\u914d\u3002<\/p>\n[NOT] LIKE '<\u5339\u914d\u4e32>' [ESCAPE '<\u6362\u7801\u5b57\u7b26>']\n\u901a\u914d\u7b26\u6709 %(\u591a\u5b57\u7b26) _\uff08\u5355\u5b57\u7b26\uff09<\/code><\/pre>\n\u4f8b\u5982a%b\u8868\u793a\u4efb\u4f55\u4ee5a\u5f00\u5934\uff0c\u4ee5b\u7ed3\u5c3e\u7684\u5b57\u7b26\u4e32\uff1ba_b\u8868\u793a\u4ee5a\u5f00\u5934\uff0c\u4ee5b\u7ed3\u5c3e\u7684\u957f\u5ea6\u4e3a3\u7684\u4efb\u610f\u5b57\u7b26\u4e32\u3002<\/p>\n
ESCAPE '\\'<\/code>\u8868\u793a'\\'<\/code>\u4e3a\u6362\u7801\u5b57\u7b26\u3002<\/p>\n\/\/ \u8fd9\u6837\u5b57\u7b26\u4e32\u4e2d\u8ddf\u5728 \\ \u540e\u9762\u7684\u5b57\u7b26 _ \u5c31\u662f\u666e\u901a\u7684\u5b57\u7b26\uff0c\u4e0d\u518d\u662f\u901a\u914d\u7b26\n' DB \\_Design' ESCAPE'\\';<\/code><\/pre>\n\u805a\u96c6\u51fd\u6570<\/h4>\nCOUNT (*) \/\/\u7edf\u8ba1\u5143\u7ec4\u4e2a\u6570\nCOUNT (DISTINCT|ALL <\u5217\u540d>) \/\/\u7edf\u8ba1\u4e00\u5217\u4e2d\u503c\u7684\u4e2a\u6570\nSUM (DISTINCT|ALL <\u5217\u540d>)\nAVG (DISTINCT|ALL <\u5217\u540d>)\nMAX (DISTINCT|ALL <\u5217\u540d>)\nMIN (DISTINCT|ALL <\u5217\u540d>)<\/code><\/pre>\n\u805a\u96c6\u51fd\u6570\u53ea\u80fd\u7528\u4e8eSELECT<\/code>\u5b50\u53e5\u548cHAVING<\/code>\u5b50\u53e5\uff0c\u4e0d\u80fd\u7528\u4e8eWHERE<\/code>\u5b50\u53e5<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"SQL\u57fa\u7840 \u6309\u7167\u8bfe\u7a0b\u5b9e\u9a8c\u8981\u6c42\uff0c\u5b89\u88c5Oracle\uff0c\u4f7f\u7528sqlplus\u5b8c\u6210\u5b9e\u9a8c\u3002 \u5728cmd\u4e2d\u8f93\u5165\u547d\u4ee4sq […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[73],"tags":[],"_links":{"self":[{"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/posts\/1280"}],"collection":[{"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/comments?post=1280"}],"version-history":[{"count":21,"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/posts\/1280\/revisions"}],"predecessor-version":[{"id":1359,"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/posts\/1280\/revisions\/1359"}],"wp:attachment":[{"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/media?parent=1280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/categories?post=1280"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.zyhcoding.club\/index.php\/wp-json\/wp\/v2\/tags?post=1280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}