SQL Server 保留關鍵字Microsoft SQL Server 2000 使用保留關鍵字定義、操作和訪問數據庫。保留關鍵字是 SQL Server 使用的 Transact-SQL 語言語法的一部分，用于分析和理解 Transact-SQL 語句和批處理。盡管在 Transact-SQL 腳本中，使用 SQL Server 保留關鍵字作為標識符和對象名在語法上是可行的，但規定只能使用分隔標識符。下表列出了 SQL Server 的保留關鍵字。ADDEXCEPTPERCENTALLEXECPLANALTEREXECUTEPRECISIONANDEXISTSPRIMARYANYEXITPRINTASFETCHPROCASCFILEPROCEDUREAUTHORIZATIONFILLFACTORPUBLICBACKUPFORRAISERRORBEGINFOREIGNREADBETWEENFREETEXTREADTEXTBREAKFREETEXTTABLERECONFIGUREBROWSEFROMREFERENCESBULKFULLREPLICATIONBYFUNCTIONRESTORECASCADEGOTORESTRICTCASEGRANTRETURNCHECKGROUPREVOKECHECKPOINTHAVINGRIGHTCLOSEHOLDLOCKROLLBACKCLUSTEREDIDENTITYROWCOUNTCOALESCEIDENTITY_INSERTROWGUIDCOLCOLLATEIDENTITYCOLRULECOLUMNIFSAVECOMMITINSCHEMACOMPUTEINDEXSELECTCONSTRAINTINNERSESSION_USERCONTAINSINSERTSETCONTAINSTABLEINTERSECTSETUSERCONTINUEINTOSHUTDOWNCONVERTISSOMECREATEJOINSTATISTICSCROSSKEYSYSTEM_USERCURRENTKILLTABLECURRENT_DATELEFTTEXTSIZECURRENT_TIMELIKETHENCURRENT_TIMESTAMPLINENOTOCURRENT_USERLOADTOPCURSORNATIONALTRANDATABASENOCHECKTRANSACTIONDBCCNONCLUSTEREDTRIGGERDEALLOCATENOTTRUNCATEDECLARENULLTSEQUALDEFAULTNULLIFUNIONDELETEOFUNIQUEDENYOFFUPDATEDESCOFFSETSUPDATETEXTDISKONUSEDISTINCTOPENUSERDISTRIBUTEDOPENDATASOURCEVALUESDOUBLEOPENQUERYVARYINGDROPOPENROWSETVIEWDUMMYOPENXMLWAITFORDUMPOPTIONWHENELSEORWHEREENDORDERWHILEERRLVLOUTERWITHESCAPEOVERWRITETEXT

另外，SQL-92 標準還定義了保留關鍵字列表。不要使用 SQL-92 保留關鍵字作為對象名和標識符。ODBC 保留關鍵字列表（如下所示）與 SQL-92 保留關鍵字列表相同。說明??SQL-92 保留關鍵字列表有時可能比 SQL Server 限制更多，有時則限制更少。例如，SQL-92 保留關鍵字列表包含 INT，而 SQL Server 不需要將其區分為保留關鍵字。Transact-SQL 保留關鍵字可用作數據庫或數據庫對象（如表、列、視圖等）的標識符或名稱。使用被引用的標識符或分隔標識符。對將保留關鍵字用作變量和存儲過程參數的名稱沒有限制。ODBC 保留關鍵字保留了下列關鍵字用于 ODBC 函數調用。這些關鍵字根本不約束 SQL 語法；然而，為確保與支持核心 SQL 語法的驅動程序兼容，應用程序應避免使用這些關鍵字。下面是當前的 ODBC 保留關鍵字列表。有關更多信息，請參見《Microsoft ODBC 3.0 程序員參考》，第 2 卷，附錄 C。ABSOLUTEEXECOVERLAPSACTIONEXECUTEPADADAEXISTSPARTIALADDEXTERNALPASCALALLEXTRACTPOSITIONALLOCATEFALSEPRECISIONALTERFETCHPREPAREANDFIRSTPRESERVEANYFLOATPRIMARYAREFORPRIORASFOREIGNPRIVILEGESASCFORTRANPROCEDUREASSERTIONFOUNDPUBLICATFROMREADAUTHORIZATIONFULLREALAVGGETREFERENCESBEGINGLOBALRELATIVEBETWEENGORESTRICTBITGOTOREVOKEBIT_LENGTHGRANTRIGHTBOTHGROUPROLLBACKBYHAVINGROWSCASCADEHOURSCHEMACASCADEDIDENTITYSCROLLCASEIMMEDIATESECONDCASTINSECTIONCATALOGINCLUDESELECTCHARINDEXSESSIONCHAR_LENGTHINDICATORSESSION_USERCHARACTERINITIALLYSETCHARACTER_LENGTHINNERSIZECHECKINPUTSMALLINTCLOSEINSENSITIVESOMECOALESCEINSERTSPACECOLLATEINTSQLCOLLATIONINTEGERSQLCACOLUMNINTERSECTSQLCODECOMMITINTERVALSQLERRORCONNECTINTOSQLSTATECONNECTIONISSQLWARNINGCONSTRAINTISOLATIONSUBSTRINGCONSTRAINTSJOINSUMCONTINUEKEYSYSTEM_USERCONVERTLANGUAGETABLECORRESPONDINGLASTTEMPORARYCOUNTLEADINGTHENCREATELEFTTIMECROSSLEVELTIMESTAMPCURRENTLIKETIMEZONE_HOURCURRENT_DATELOCALTIMEZONE_MINUTECURRENT_TIMELOWERTOCURRENT_TIMESTAMPMATCHTRAILINGCURRENT_USERMAXTRANSACTIONCURSORMINTRANSLATEDATEMINUTETRANSLATIONDAYMODULETRIMDEALLOCATEMONTHTRUEDECNAMESUNIONDECIMALNATIONALUNIQUEDECLARENATURALUNKNOWNDEFAULTNCHARUPDATEDEFERRABLENEXTUPPERDEFERREDNOUSAGEDELETENONEUSERDESCNOTUSINGDESCRIBENULLVALUEDESCRIPTORNULLIFVALUESDIAGNOSTICSNUMERICVARCHARDISCONNECTOCTET_LENGTHVARYINGDISTINCTOFVIEWDOMAINONWHENDOUBLEONLYWHENEVERDROPOPENWHEREELSEOPTIONWITHENDORWORKEND-EXECORDERWRITEESCAPEOUTERYEAREXCEPTOUTPUTZONEEXCEPTION