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”...
SQL Server 2016简化了这一操作,通过下面一句简洁的SQL即可实现: 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,...
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：ALTER TABLE PERSONDROP COLUMN If EXISTS NAME SQL Server 2016新特性：DROP IF EXISTS 标签：basesysges.netschfunctionname...
-- SQL Server, Azure SQL Database DROP FUNCTION [ IF EXISTS ] { [ schema_name. ] function_name } [ ,...n ] [;] syntaxsql 复制 -- Azure Synapse Analytics, Parallel Data Warehouse, Microsoft Fabric DROP FUNCTION [IF EXISTS] [ schema_name. ] function_name [;] 参数 IF EXISTS ...
I don't like these, and if you also don't like them, then you might try new DROP IF EXISTS (a.k.a. DIE :) ) statements in SQL Server 2016.From SQL Server 2016 CTP3 you can use new DIE statements instead of big IF wrappers, e.g.:...
FUNCTION SEQUENCE INDEX SYNONYM DIE is added on columns and constraints in ALTER TABLE statementALTER TABLE DROP COLUMN IF EXISTS ALTER TABLE DROP CONSTRAINT IF EXISTSDocumentation is already published on MSDN:DROP TABLE (Transact-SQL),DROP PROCEDURE (Transact-SQL), DROP TRIGGER (T...
execute immediate 'drop table ' || TAB_NAME_IN ||' purge'; end If; end DROPEXITS...
DROP TABLE IF EXISTS [table_name] Oracle: BEGIN EXECUTE IMMEDIATE 'DROP TABLE [table_name]'; EXCEPTION WHEN OTHERS THEN NULL; END; 1. SQL Server: IF EXISTS ( SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = '[table_name]') DROP TABLE [table_name] ...
Microsoft.SqlServer.SqlManagementObjects v160.2004021.0 Drops the object with IF EXISTS option. If object is invalid for drop function will return without exception. C# publicvoidDropIfExists(); Implements DropIfExists() Applies to 제품버전 ...
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 ...