描述信息 使用 "DROP TABLE IF EXISTS" 语句删除表格 section 结束 描述信息 完成操作,关闭数据库连接 步骤一:连接到 SQL Server 数据库 首先,我们需要连接到 SQL Server 数据库。打开 SQL Server Management Studio (SSMS),在“Connect to Server” 窗口中填写正确的服务器名称和身份验证选项,然后点击 “Connect”...
We need to check if the temp table exists within the TempDB database and if it does, we need to drop it.[cc lang=”sql”] IF OBJECT_ID(N’tempdb..#Temp’) IS NOT NULL BEGIN DROP TABLE #Temp END [/cc]To replicate this, let’s run the following command in the same window ...
SQL 複製 DROP TABLE AdventureWorks2022.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 複製 CREATE TABLE #temptable (col1 INT); GO INSERT INT...
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...
In MySQL it is pretty easy to drop a table if it exists already. In Oracle and Microsoft’s SQL Server it is a little more complicated. Today I want to present you the solutions for these two DBMS’. MySQL: DROP TABLE IF EXISTS [table_name] ...
execute immediate 'drop table ' || TAB_NAME_IN ||' purge'; end If; end DROPEXITS...
MySQL: DROP TABLE IF EXISTS [table_name] Oracle: BEGIN EXECUTE IMMEDIATE 'DROP TABLE [table_name]'; EXCEPTION WHEN OTHERS THEN NULL;END; SQL Server: IF EXISTS ( SELECT TABLE_NAME FROM INFORMATION ...
SQL 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); GOSE...
新版本(SQL Server 2016): DROP TABLE IF EXISTS PERSON DROP IF EXISTS的语法如下: DROPobject_typeIFEXISTSobject_name 能够用于DROP的object_type,如Tables, Database, Function, Trigger, Stored Procedure, Column, User, Type, View, Schema,皆可套用,比如: ...
From SQL Server 2016 CTP3 you can use new DIE statements instead of big IF wrappers, e.g.:scroll 复制 DROP TABLE IF EXISTS dbo.Product DROP TRIGGER IF EXISTS trProductInsert If the object does not exists, DIE will not fail and execution will continue. Currently, the follo...