{"id":371,"date":"2014-11-12T15:34:12","date_gmt":"2014-11-12T15:34:12","guid":{"rendered":"41f1f19176d383480afa65d325c06ed0"},"modified":"2014-11-12T15:34:12","modified_gmt":"2014-11-12T15:34:12","slug":"","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/371","title":{"rendered":"sqlserver \u5185\u90e8\u51fd\u6570\u3001\u5b58\u50a8\u8fc7\u7a0b\u3001\u89d2\u8272"},"content":{"rendered":"<p>\/*\u65e5\u671f\u51fd\u6570*\/<br \/>\nDATEADD ( datepart , number, date ) <br \/>\n--\u5728\u5411\u6307\u5b9a\u65e5\u671f\u52a0\u4e0a\u4e00\u6bb5\u65f6\u95f4\u7684\u57fa\u7840\u4e0a\uff0c\u8fd4\u56de\u65b0\u7684 datetime \u503c\u3002<br \/>\nDATEDIFF ( datepart , startdate , enddate ) <br \/>\n--\u8fd4\u56de\u8de8\u4e24\u4e2a\u6307\u5b9a\u65e5\u671f\u7684\u65e5\u671f\u548c\u65f6\u95f4\u8fb9\u754c\u6570\u3002<br \/>\nDATENAME ( datepart , date )<br \/>\n--\u8fd4\u56de\u4ee3\u8868\u6307\u5b9a\u65e5\u671f\u7684\u6307\u5b9a\u65e5\u671f\u90e8\u5206\u7684\u5b57\u7b26\u4e32\u3002<br \/>\nDATEPART ( datepart , date ) <br \/>\n--\u8fd4\u56de\u4ee3\u8868\u6307\u5b9a\u65e5\u671f\u7684\u6307\u5b9a\u65e5\u671f\u90e8\u5206\u7684\u6574\u6570\u3002<br \/>\nDAY ( date ) <br \/>\n--\u8fd4\u56de\u4ee3\u8868\u6307\u5b9a\u65e5\u671f\u7684\u5929\u7684\u65e5\u671f\u90e8\u5206\u7684\u6574\u6570\u3002<br \/>\nGETDATE ( )<br \/>\n--\u6309 datetime \u503c\u7684 Microsoft? SQL Server? \u6807\u51c6\u5185\u90e8\u683c\u5f0f\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65e5\u671f\u548c\u65f6\u95f4\u3002<br \/>\nGETUTCDATE()<br \/>\n--\u8fd4\u56de\u8868\u793a\u5f53\u524d UTC \u65f6\u95f4\uff08\u4e16\u754c\u65f6\u95f4\u5750\u6807\u6216\u683c\u6797\u5c3c\u6cbb\u6807\u51c6\u65f6\u95f4\uff09\u7684 datetime \u503c\u3002<br \/>\n--\u5f53\u524d\u7684 UTC \u65f6\u95f4\u5f97\u81ea\u5f53\u524d\u7684\u672c\u5730\u65f6\u95f4\u548c\u8fd0\u884c SQL Server \u7684\u8ba1\u7b97\u673a\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u65f6\u533a\u8bbe\u7f6e\u3002<br \/>\nMONTH ( date )<br \/>\n--\u8fd4\u56de\u4ee3\u8868\u6307\u5b9a\u65e5\u671f\u6708\u4efd\u7684\u6574\u6570\u3002<br \/>\nYEAR ( date )<br \/>\n--\u8fd4\u56de\u8868\u793a\u6307\u5b9a\u65e5\u671f\u4e2d\u7684\u5e74\u4efd\u7684\u6574\u6570\u3002<br \/>\n--------------------------------------------------------------------------<br \/>\n\/*\u5b57\u7b26\u4e32\u5904\u7406\u51fd\u6570*\/<br \/>\nLCASE( )<br \/>\nLOWER( ) <br \/>\n--\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5c0f\u5199\u5b57\u6bcd <br \/>\nLTRIM( ) <br \/>\n--\u5220\u9664\u5b57\u7b26\u4e32\u524d\u9762\u7684\u7a7a\u683c <br \/>\nSUBSTRING( ) <br \/>\n--\u4ece\u5b57\u7b26\u4e32\u4e2d\u63d0\u53d6\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26 <br \/>\nUCASE( )<br \/>\nUPPER( ) <br \/>\n--\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5927\u5199\u5b57\u6bcd <br \/>\nROUND( ) <br \/>\n--\u5c06\u6570\u5b57\u6309\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\u56db\u820d\u4e94\u5165 <br \/>\nFLOOR( ) <br \/>\n--\u5c06\u6570\u5b57\u5411\u4e0b\u56db\u820d\u4e94\u5165\u4e3a\u6700\u63a5\u8fd1\uff08\u6700\u5c0f\uff09\u7684\u6574\u6570 <br \/>\nCEILING( ) <br \/>\n--\u5c06\u6570\u5b57\u5411\u4e0a\u56db\u820d\u4e94\u5165\u4e3a\u6700\u63a5\u8fd1\u7684\u6574\u6570 <br \/>\nDATALENGTH( ) <br \/>\n--\u8fd4\u56de\u6307\u5b9a\u7684\u8868\u8fbe\u5f0f\u6240\u7528\u7684\u5b57\u8282\u6570 <br \/>\n--------------------------------------------------------------------------<br \/>\nUSER( )<br \/>\nUSER_NAME( ) <br \/>\n--\u8fd4\u56de\u5f53\u524d\u7528\u6237\u540d <br \/>\nCONVERT( ) <br \/>\n--\u5c06\u6570\u636e\u4ece\u4e00\u79cd\u7c7b\u578b\u8f6c\u6362\u4e3a\u53e6\u4e00\u79cd\u7c7b\u578b\u3002<br \/>\nSOUNDEX( ) <br \/>\n--\u4e3a\u53ef\u521b\u5efa\"\u8fd1\u4f3c\"\u641c\u7d22\u7684\u6307\u5b9a\u8868\u8fbe\u5f0f\u8fd4\u56de Soundex \u4ee3\u7801\u3002<br \/>\nSTR( ) <br \/>\n--\u5c06\u6570\u5b57\u6570\u636e\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u4ee5\u4fbf\u53ef\u4ee5\u7528\u6587\u672c\u8fd0\u7b97\u7b26\u5bf9\u5176\u8fdb\u884c\u5904\u7406\u3002 <br \/>\n\/*\u5168\u5c40\u53d8\u91cf*\/<br \/>\n@@CONNECTIONS<br \/>\n--\u670d\u52a1\u5668\u4e0a\u6b21\u542f\u52a8\u4ee5\u6765\u521b\u5efa\u7684\u8fde\u63a5\u6570<br \/>\n@@CPU_BUSY&nbsp; <br \/>\n--\u81ea SQL Server \u542f\u52a8\u81f3\u4eca\uff0c\u7cfb\u7edf\u6301\u7eed\u8fd0\u884c\u7684\u6beb\u79d2\u6570\u3002<br \/>\n@@CURSOR_ROWS&nbsp; <br \/>\n--\u6700\u8fd1\u6253\u5f00\u7684\u6e38\u6807\u4e2d\u7684\u884c\u6570<br \/>\n@@DATEFIRST&nbsp;&nbsp; <br \/>\n--SET DATEFIRST \u53c2\u6570\u7684\u5f53\u524d\u503c\uff0c\u8be5\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u4e00\u4e2a\u661f\u671f\u7684\u7b2c\u4e00\u5929\u4e3a\u54ea\u4e00\u5929\u3002<br \/>\n@@ERROR&nbsp; <br \/>\n--\u6700\u540e\u4e00\u4e2a T-SQL \u9519\u8bef\u7684\u9519\u8bef\u53f7<br \/>\n@@FETCH_STATUS <br \/>\n--\u5982\u679c\u6700\u540e\u4e00\u6b21\u63d0\u53d6\u7684\u72b6\u6001\u4e3a\u6210\u529f\u72b6\u6001\uff0c\u5219\u4e3a 0\u3002\u5982\u679c\u51fa\u9519\uff0c\u5219\u4e3a -1<br \/>\n@@IDENTITY&nbsp;&nbsp; <br \/>\n--\u6700\u540e\u4e00\u6b21\u63d2\u5165\u7684\u6807\u8bc6\u503c<br \/>\n@@LANGUAGE&nbsp;&nbsp; <br \/>\n--\u5f53\u524d\u4f7f\u7528\u7684\u8bed\u8a00\u7684\u540d\u79f0<br \/>\n@@MAX_CONNECTIONS <br \/>\n--\u53ef\u4ee5\u521b\u5efa\u7684\u540c\u65f6\u8fde\u63a5\u7684\u6700\u5927\u6570<br \/>\n@@ROWCOUNT&nbsp;&nbsp; <br \/>\n--\u53d7\u4e0a\u4e00\u4e2a SQL \u8bed\u53e5\u5f71\u54cd\u7684\u884c\u6570<br \/>\n@@SERVERNAME&nbsp; <br \/>\n--\u672c\u5730\u670d\u52a1\u5668\u7684\u540d\u79f0<br \/>\n@@SERVICENAME&nbsp; <br \/>\n--\u8be5\u8ba1\u7b97\u673a\u4e0a\u7684 SQL \u670d\u52a1\u7684\u540d\u79f0<br \/>\n@@TIMETICKS&nbsp; <br \/>\n--\u5f53\u524d\u8ba1\u7b97\u673a\u4e0a\u6bcf\u6307\u4ee4\u5468\u671f\u7684\u5fae\u79d2\u6570<br \/>\n@@TRANSCOUNT&nbsp; <br \/>\n--\u5f53\u524d\u8fde\u63a5\u6253\u5f00\u7684\u4e8b\u52a1\u6570<br \/>\n@@VERSION&nbsp;&nbsp; <br \/>\n--SQL Server \u7684\u7248\u672c\u4fe1\u606f<br \/>\n-----------------------------------------------------------------------<br \/>\n\/*\u5b58\u50a8\u8fc7\u7a0b*\/<br \/>\nsp_databases --\u5217\u51fa\u670d\u52a1\u5668\u4e0a\u7684\u6240\u6709\u6570\u636e\u5e93<br \/>\nsp_server_info --\u5217\u51fa\u670d\u52a1\u5668\u4fe1\u606f\uff0c\u5982\u5b57\u7b26\u96c6\uff0c\u7248\u672c\u548c\u6392\u5217\u987a\u5e8f<br \/>\nsp_stored_procedures--\u5217\u51fa\u5f53\u524d\u73af\u5883\u4e2d\u7684\u6240\u6709\u5b58\u50a8\u8fc7\u7a0b<br \/>\nsp_tables --\u5217\u51fa\u5f53\u524d\u73af\u5883\u4e2d\u6240\u6709\u53ef\u4ee5\u67e5\u8be2\u7684\u5bf9\u8c61<br \/>\nsp_start_job --\u7acb\u5373\u542f\u52a8\u81ea\u52a8\u5316\u4efb\u52a1<br \/>\nsp_stop_job --\u505c\u6b62\u6b63\u5728\u6267\u884c\u7684\u81ea\u52a8\u5316\u4efb\u52a1<br \/>\nsp_password --\u6dfb\u52a0\u6216\u4fee\u6539\u767b\u5f55\u5e10\u6237\u7684\u5bc6\u7801<br \/>\nsp_configure --\u663e\u793a(\u4e0d\u5e26\u9009\u9879)\u6216\u66f4\u6539(\u5e26\u9009\u9879)\u5f53\u524d\u670d\u52a1\u5668\u7684\u5168\u5c40\u914d\u7f6e\u8bbe\u7f6e<br \/>\nsp_help --\u8fd4\u56de\u8868\u7684\u5217\u540d\uff0c\u6570\u636e\u7c7b\u578b\uff0c\u7ea6\u675f\u7c7b\u578b\u7b49<br \/>\nsp_helptext --\u663e\u793a\u89c4\u5219\uff0c\u9ed8\u8ba4\u503c\uff0c\u672a\u52a0\u5bc6\u7684\u5b58\u50a8\u8fc7\u7a0b\uff0c\u7528\u6237\u5b9a\u4e49\u7684\u51fd\u6570\uff0c<br \/>\n--\u89e6\u53d1\u5668\u6216\u89c6\u56fe\u7684\u5b9e\u9645\u6587\u672c<br \/>\nsp_helpfile --\u67e5\u770b\u5f53\u524d\u6570\u636e\u5e93\u4fe1\u606f<br \/>\nsp_dboption --\u663e\u793a\u6216\u66f4\u6539\u6570\u636e\u5e93\u9009\u9879<br \/>\nsp_detach_db --\u5206\u79bb\u6570\u636e\u5e93<br \/>\nsp_attach_db --\u9644\u52a0\u6570\u636e\u5e93<br \/>\nsp_addumpdevice --\u6dfb\u52a0\u8bbe\u5907<br \/>\nsp_dropdevice --\u5220\u9664\u8bbe\u5907<br \/>\nsp_pkeys --\u67e5\u770b\u4e3b\u952e<br \/>\nsp_fkeys --\u67e5\u770b\u5916\u952e<br \/>\nsp_helpdb --\u67e5\u770b\u6307\u5b9a\u6570\u636e\u5e93\u76f8\u5173\u6587\u4ef6\u4fe1\u606f<br \/>\nsp_addtype --\u81ea\u5efa\u6570\u636e\u7c7b\u578b<br \/>\nsp_droptype --\u5220\u9664\u81ea\u5efa\u6570\u636e\u7c7b\u578b<br \/>\nsp_rename --\u91cd\u65b0\u547d\u540d\u6570\u636e\u5e93<br \/>\nsp_executesql --\u6267\u884cSQL\u8bed\u53e5<br \/>\nsp_addlogin --\u6dfb\u52a0\u767b\u9646<br \/>\nsp_droplogin --\u5220\u9664\u767b\u5f55<br \/>\nsp_grantdbaccess --\u628a\u7528\u6237\u6620\u5c04\u5230\u767b\u5f55\uff0c\u5373\u6dfb\u52a0\u4e00\u4e2a\u6570\u636e\u5e93\u5b89\u5168\u5e10\u6237\u5e76\u6388\u4e88\u5854\u8bbf\u95ee\u6743\u9650<br \/>\nsp_revokedbaccess--\u64a4\u9500\u7528\u6237\u7684\u6570\u636e\u8bbf\u95ee\u6743,\u5373\u4ece\u6570\u636e\u5e93\u4e2d\u5220\u9664\u4e00\u4e2a\u5b89\u5168\u5e10\u6237<br \/>\nsp_addrole --\u6dfb\u52a0\u89d2\u8272<br \/>\nsp_addrolemember --\u5411\u89d2\u8272\u4e2d\u6dfb\u52a0\u6210\u5458\uff0c\u4f7f\u5176\u6210\u4e3a\u6570\u636e\u5e93\u89d2\u8272\u7684\u6210\u5458<br \/>\nsp_addsrvrolemember--\u4fee\u6539\u767b\u5f55\u4f7f\u5176\u6210\u4e3a\u56fa\u5b9a\u670d\u52a1\u5668\u89d2\u8272\u7684\u6210\u5458<br \/>\nsp_grantlogin --\u5141\u8bb8\u4f7f\u7528\u7ec4\u5e10\u6237\u6216\u7cfb\u7edf\u7528\u6237\u4f7f\u7528Windows\u8eab\u4efd\u9a8c\u8bc1\u8fde\u63a5\u5230SQL<br \/>\nsp_defaultdb --\u4fee\u6539\u4e00\u4e2a\u767b\u5f55\u7684\u9ed8\u8ba4\u6570\u636e\u5e93<br \/>\nsp_helpindex --\u7528\u4e8e\u67e5\u770b\u8868\u7684\u7d22\u5f15<br \/>\nsp_cursoropen --\u5b9a\u4e49\u4e0e\u6e38\u6807\u548c\u6e38\u6807\u9009\u9879\u76f8\u5173\u7684SQL\u8bed\u53e5\uff0c\u7136\u540e\u751f\u6210\u6e38\u6807<br \/>\nsp_cursorfetch --\u4ece\u6e38\u6807\u4e2d\u63d0\u53d6\u4e00\u884c\u6216\u591a\u884c<br \/>\nsp_cursorclose --\u5173\u95ed\u5e76\u91ca\u653e\u6e38\u6807<br \/>\nsp_cursoroption --\u8bbe\u7f6e\u5404\u79cd\u6e38\u6807\u9009\u9879<br \/>\nsp_cursor --\u7528\u4e8e\u8bf7\u6c42\u5b9a\u4f4d\u66f4\u65b0<br \/>\nsp_cursorprepare --\u628a\u4e0e\u6e38\u6807\u6709\u5173\u7684T-SQL\u8bed\u53e5\u6216\u6279\u5904\u7406\u7f16\u8bd1\u6210\u6267\u884c\u8ba1\u5212\uff0c\u4f46\u5e76\u4e0d\u521b\u5efa\u6e38\u6807<br \/>\nsp_cursorexecute --\u4ece\u7531sp_cursorprepare\u521b\u5efa\u7684\u6267\u884c\u8ba1\u5212\u4e2d\u521b\u5efa\u5e76\u586b\u5145\u6e38\u6807<br \/>\nsp_cursorunprepare --\u5e9f\u5f03\u7531sp_cursorprepare\u751f\u6210\u7684\u6267\u884c\u8ba1\u5212<br \/>\nsp_settriggerorder --\u6307\u5b9a\u7b2c\u4e00\u4e2a\u6216\u6700\u540e\u4e00\u4e2a\u6fc0\u53d1\u7684\u3001\u4e0e\u8868\u5173\u8054\u7684 AFTER \u89e6\u53d1\u5668\u3002\u5728\u7b2c\u4e00\u4e2a<br \/>\n--\u548c\u6700\u540e\u4e00\u4e2a\u89e6\u53d1\u5668\u4e4b\u95f4\u6fc0\u53d1\u7684 AFTER \u89e6\u53d1\u5668\u5c06\u6309\u672a\u5b9a\u4e49\u7684\u987a\u5e8f\u6267\u884c<br \/>\n--------------------------------------------------------------------------------<br \/>\n\/*\u670d\u52a1\u5668\u89d2\u8272*\/<br \/>\nsysadmin<br \/>\n--\u5728 SQL Server \u4e2d\u8fdb\u884c\u4efb\u4f55\u6d3b\u52a8\u3002\u8be5\u89d2\u8272\u7684\u6743\u9650\u8de8\u8d8a\u6240\u6709\u5176\u5b83\u56fa\u5b9a\u670d\u52a1\u5668\u89d2\u8272\u3002 <br \/>\nserveradmin <br \/>\n--\u914d\u7f6e\u670d\u52a1\u5668\u8303\u56f4\u7684\u8bbe\u7f6e\u3002 <br \/>\nsetupadmin <br \/>\n--\u6dfb\u52a0\u548c\u5220\u9664\u94fe\u63a5\u670d\u52a1\u5668\uff0c\u5e76\u6267\u884c\u67d0\u4e9b\u7cfb\u7edf\u5b58\u50a8\u8fc7\u7a0b\uff08\u5982 sp_serveroption\uff09\u3002 <br \/>\nsecurityadmin <br \/>\n--\u7ba1\u7406\u670d\u52a1\u5668\u767b\u5f55\u3002 <br \/>\nprocessadmin <br \/>\n--\u7ba1\u7406\u5728 SQL Server \u5b9e\u4f8b\u4e2d\u8fd0\u884c\u7684\u8fdb\u7a0b\u3002 <br \/>\ndbcreator <br \/>\n--\u521b\u5efa\u548c\u6539\u53d8\u6570\u636e\u5e93\u3002 <br \/>\ndiskadmin <br \/>\n--\u7ba1\u7406\u78c1\u76d8\u6587\u4ef6\u3002 <br \/>\nbulkadmin <br \/>\n--\u6267\u884c BULK INSERT \u8bed\u53e5\u3002<br \/>\n\/*\u6570\u636e\u5e93\u89d2\u8272*\/<br \/>\npublic<br \/>\npublic \u89d2\u8272<br \/>\n--public \u89d2\u8272\u662f\u4e00\u4e2a\u7279\u6b8a\u7684\u6570\u636e\u5e93\u89d2\u8272\uff0c\u6bcf\u4e2a\u6570\u636e\u5e93\u7528\u6237\u90fd\u5c5e\u4e8e\u5b83\u3002public \u89d2\u8272\uff1a <br \/>\n--\u6355\u83b7\u6570\u636e\u5e93\u4e2d\u7528\u6237\u7684\u6240\u6709\u9ed8\u8ba4\u6743\u9650\u3002<br \/>\n--\u65e0\u6cd5\u5c06\u7528\u6237\u3001\u7ec4\u6216\u89d2\u8272\u6307\u6d3e\u7ed9\u5b83\uff0c\u56e0\u4e3a\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5b83\u4eec\u5373\u5c5e\u4e8e\u8be5\u89d2\u8272\u3002<br \/>\n--\u542b\u5728\u6bcf\u4e2a\u6570\u636e\u5e93\u4e2d\uff0c\u5305\u62ec master\u3001msdb\u3001tempdb\u3001model \u548c\u6240\u6709\u7528\u6237\u6570\u636e\u5e93\u3002<br \/>\n--\u65e0\u6cd5\u9664\u53bb\u3002<br \/>\ndb_owner <br \/>\n--\u8fdb\u884c\u6240\u6709\u6570\u636e\u5e93\u89d2\u8272\u7684\u6d3b\u52a8\uff0c\u4ee5\u53ca\u6570\u636e\u5e93\u4e2d\u7684\u5176\u5b83\u7ef4\u62a4\u548c\u914d\u7f6e\u6d3b\u52a8\u3002<br \/>\n--\u8be5\u89d2\u8272\u7684\u6743\u9650\u8de8\u8d8a\u6240\u6709\u5176\u5b83\u56fa\u5b9a\u6570\u636e\u5e93\u89d2\u8272\u3002<br \/>\ndb_accessadmin <br \/>\n--\u5728\u6570\u636e\u5e93\u4e2d\u6dfb\u52a0\u6216\u5220\u9664 Windows NT 4.0 \u6216 Windows 2000 \u7ec4\u548c\u7528\u6237\u4ee5\u53ca SQL Server \u7528\u6237\u3002 <br \/>\ndb_datareader <br \/>\n--\u67e5\u770b\u6765\u81ea\u6570\u636e\u5e93\u4e2d\u6240\u6709\u7528\u6237\u8868\u7684\u5168\u90e8\u6570\u636e\u3002<br \/>\ndb_datawriter <br \/>\n--\u6dfb\u52a0\u3001\u66f4\u6539\u6216\u5220\u9664\u6765\u81ea\u6570\u636e\u5e93\u4e2d\u6240\u6709\u7528\u6237\u8868\u7684\u6570\u636e<br \/>\ndb_ddladmin <br \/>\n--\u6dfb\u52a0\u3001\u4fee\u6539\u6216\u9664\u53bb\u6570\u636e\u5e93\u4e2d\u7684\u5bf9\u8c61(\u8fd0\u884c\u6240\u6709 DDL)<br \/>\ndb_securityadmin <br \/>\n--\u7ba1\u7406 SQL Server 2000 \u6570\u636e\u5e93\u89d2\u8272\u7684\u89d2\u8272\u548c\u6210\u5458\uff0c\u5e76\u7ba1\u7406\u6570\u636e\u5e93\u4e2d\u7684\u8bed\u53e5\u548c\u5bf9\u8c61\u6743\u9650<br \/>\ndb_backupoperator <br \/>\n--\u6709\u5907\u4efd\u6570\u636e\u5e93\u7684\u6743\u9650<br \/>\ndb_denydatareader <br \/>\n--\u62d2\u7edd\u9009\u62e9\u6570\u636e\u5e93\u6570\u636e\u7684\u6743\u9650<br \/>\ndb_denydatawriter<br \/>\n--\u62d2\u7edd\u66f4\u6539\u6570\u636e\u5e93\u6570\u636e\u7684\u6743\u9650<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\/*\u65e5\u671f\u51fd\u6570*\/<br \/>\nDATEADD ( datepart , number, date ) <br \/>\n--\u5728\u5411\u6307\u5b9a\u65e5\u671f\u52a0\u4e0a\u4e00\u6bb5\u65f6\u95f4\u7684\u57fa\u7840\u4e0a\uff0c\u8fd4\u56de\u65b0\u7684 datetime \u503c\u3002<br \/>\nDATEDIFF ( datepart , startdate , enddate ) <br \/>\n--\u8fd4\u56de\u8de8\u4e24\u4e2a\u6307\u5b9a\u65e5\u671f\u7684\u65e5\u671f\u548c\u65f6\u95f4\u8fb9\u754c\u6570\u3002<br \/>\nDATENAME ( datepart , date )<br \/>\n--\u8fd4\u56de\u4ee3\u8868\u6307\u5b9a\u65e5\u671f\u7684\u6307\u5b9a\u65e5\u671f\u90e8\u5206\u7684\u5b57\u7b26\u4e32\u3002<br \/>\nDATEPART ( datepart , date ) <br \/>\n--\u8fd4\u56de\u4ee3\u8868\u6307\u5b9a\u65e5\u671f\u7684\u6307\u5b9a\u65e5\u671f\u90e8\u5206\u7684\u6574\u6570\u3002<br \/>\nDAY ( date ) <br \/>\n--\u8fd4\u56de\u4ee3\u8868\u6307\u5b9a\u65e5\u671f\u7684\u5929\u7684\u65e5\u671f\u90e8\u5206\u7684\u6574\u6570\u3002<br \/>\n... <a href=\"https:\/\/www.xiaobo.li\/notes\/archives\/371\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[288],"tags":[172],"class_list":["post-371","post","type-post","status-publish","format-standard","hentry","category-db","tag-sqlserver"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/371","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=371"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/371\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=371"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}