USE tempDB IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo]. [Product]') AND type in (N'U')) DROP TABLE [dbo].[Product] -- STEP 2: 建立訂單資料表 CREATE TABLE dbo.Product( ProductID int primary key, FilmName nvarchar(30), direct nvarchar(10), Rent mo...
X =扩展存储过程 如果是实表可以用 ifexists (select * fromsysobjectswhere id =object_id(N'[dbo].[表名]') and OBJECTPROPERTY(id,N'IsUserTable') = 1) drop table [dbo].[表名]--如果表存在就删除 如果是临时表可以用 ifobject_id('tempdb..##temp') is not null drop table ##temp©...
if exists(select 1 from tempdb.sys.tables where upper(name) like upper('%tempScores%')) drop table #tempScores create table #tempScores ( studentNamevarchar(200), className varchar(200), classScore int ) insert into #tempScores (studentName,className,classScore) select 'Alex' as studentName...
9DROPTABLE#tmp 另一个跟帖的老外提出了另一种方案(仔细一看,和我实现的道理相似,呵呵,高兴ing):You could also just use xp_cmdshell 'dir blah/blah/blah.blah' and insert into the temp table like Tim is doing. You then just test the results of the temp table.Then if they drop or change th...
select * into #csj_temp from csj -- 删除临时表 用到try begin try -- 检测代码开始 drop table #csj_temp end try begin catch -- 错误开始 end catch -- ╔════════════════╗ -- === ║ 检查表是否存在 ║ -- ╚════════════════╝ use master go ...
2. Drop temp table after confirm it exists IFOBJECT_ID('#SharingTempTables')ISNOTNULLBEGINDROPTABLE#SharingTempTables;ENDGO 3. Check whether the temporary table exists, if not so, just create it ifobject_id('tempdb..#TC_TableRelation')isnullbeginCREATETABLE[#TC_TableRelation]([ID][nvarchar...
此示例不使用 IF EXISTS 语法,该语法适用于 SQL Server 2016 (13.x) 及以上版本。SQL 复制 CREATE TABLE #temptable (col1 INT); GO INSERT INTO #temptable VALUES (10); GO SELECT * FROM #temptable; GO IF OBJECT_ID(N'tempdb..#temptable', N'U') IS NOT NULL DROP TABLE #temptable; ...
if exists(select 1 from sysobjects where id=object_id('fgetscript') and objectproperty(id,'IsInlineFunction')=0) drop function fgetscriptgocreate function fgetscript(@servername varchar(50) --服务器名 ,@userid varchar(50)='sa' --用户名,如果为nt验证方式,则为空 ,@password varchar(50)='...
DROPTABLEAdventureWorks2022.dbo.SalesPerson2 ; C. 卸除暫存資料表 下列範例會建立一份暫存資料表、測試它是否存在、卸除它,再重新測試它是否存在。 此範例不使用IF EXISTS語法,其從 SQL Server 2016 (13.x) 開始可供使用。 SQL CREATETABLE#temptable (col1INT); GOINSERTINTO#temptableVALUES(10); GOSELECT...
IF EXISTS(SELECT * FROM sys.configurations WHERE name = 'xp_cmdshell' AND value_in_use=1 ) AND EXISTS(SELECT * FROM fn_my_permissions ( 'xp_cmdshell', 'OBJECT' ) WHERE permission_name='EXECUTE') BEGIN SET NOCOUNT ON DECLARE @x XML DECLARE @output TABLE( ID INT IDENTITY(1,1) PRIMAR...