if exists (select * from tempdb.dbo.sysobjects where id = object_id(N'tempdb..#tempcitys') and type='U') drop table #tempcitys Way 3 IF OBJECT_ID('tempdb..#') IS NOT NULL DROP TABLE # OBJECT_ID此函数返回数据库对象标识
IF OBJECT_ID('tempDB..#myTempName','U') IS NOT NULL drop table #myTempName--Brad (My Blog)Tuesday, November 3, 2015 11:23 AM | 3 votesIf you install SQL Server 2016 you can use DROP TABLE IF EXISTS namehttp://blogs.msdn.com/b/sqlserverstorageengine/archive/2015/11/03/drop-if...
方法一:使用 IF EXISTS 语句 为了避免在删除临时表之前出现错误,我们可以使用 IF EXISTS 语句来检查表是否存在。如果表存在,则删除它。否则,不执行删除操作。以下是示例代码: IFOBJECT_ID('tempdb..#TempTable')ISNOTNULLBEGINDROPTABLE#TempTableEND 1. 2. 3. 4. 在上面的代码中,我们使用了 OBJECT_ID 函数...
--错误的临时表删除操作,因为所在数据库不同 IFEXISTS(SELECT*FROMsysobjectsWHEREobject_id=OBJECT_ID(N'[dbo].[#tempTable]')ANDtypein(N'U')) Begin DROPTABLE[dbo].[tempTable] End --错误的临时表删除操作,因为临时表名已变 ifexists(select*fromtempdb.dbo.sysobjectswhereid=object_id(N'[#temptable...
DROP TABLE [dbo].[tempTable] End --错误的临时表删除操作,因为临时表名已变 if exists (select * from tempdb.dbo.sysobjects where id = object_id(N'[#temptable]')) Begin drop table #temptable End 2、正确的删除方式: --正确的临时表删除操作 ...
最后,我们需要删除临时表,以清理我们创建的临时数据。 -- 删除临时表DROPTABLEIFEXISTStemp_table; 1. 2. 完成 至此,我们已经完成了导出不带注释的 SQL 表结构的过程。你可以根据上述步骤进行操作,将表结构导出为不带注释的 SQL 文件。 希望本文对你有所帮助!
--Generate ALTER DATABASE ... MODIFY FILEGROUP statements--so that all read-write filegroups grow at the same time.SETNOCOUNTON;DROPTABLEIFEXISTS#tmpdbsCREATETABLE#tmpdbs (idINTIDENTITY(1,1), [dbid]INT, [dbname] sysname, isdoneBIT);DROPTABLEIFEXISTS#tmpfgsCREATETABLE#tmpfgs (idINTIDENTITY...
select * into temp2 from [表名] where 标志字段id in(select 标志字段id from temp1) 4、删除重复表: delete [表名] 5、恢复表: insert [表名] select * from temp2 6、删除临时表: drop table temp1 drop table temp2 === B: create table a_dist(id int,name varchar...
CREATETABLE#temptable (col1int);INSERTINTO#temptableVALUES(10);SELECTcol1FROM#temptable; IF OBJECT_ID(N'tempdb..#temptable', N'U') IS NOT NULLDROPTABLE#temptable;SELECTcol1FROM#temptable; D. Dropping a table using IF EXISTS Applies to: SQL Server ( SQL Server 2016 (13.x) throughcur...
drop tableifexists koo.nil_temp0222_a2;create tableifnot exists koo.nil_temp0222_a2asselect*,row_number()over(partition by userid order by inserttime)asnn1from(select a.*,b.inserttimeasinserttime_aftr,datediff(b.inserttime,a.inserttime)assession_difffrom(select userid,inserttime,row_number...