In SQL Server, truncating a table is a fast way to clear out records from a table if you don't need to worry about rolling back. When a table is truncated, the row deletions are not logged which is why rolling back is not possible without a transaction (NOTE: you can rollback a tr...
TRUNCATE [TABLE] table_name; 或 ALTER TABLE [IF EXISTS] table_name TRUNCATE PARTITION { partition_name | FOR ( partition_value [, ...] ) } 参数:table_name:需要删除数据的Table名称。partition_name:需要删除的分区表的分区名称。partition_value:需要删除的分区表的分区值。 3、示例1 以下示例演示T...
我的意思是,在t中使用这些语句: truncate table TableX drop table TableX delete table_name 浏览2提问于2015-09-10得票数 0 回答已采纳 1回答 如何在Server上使用python删除表? 、、、 我正在为Server和pyodbc使用ODBC驱动程序17。以下代码不起作用。 cursor.execute("""DROP TABLE IF EXISTS ?""", "ta...
Execute SQL task fail for Droping a table if exists? Execute SQL Task in Control Flow with a @StartDate and @EndDate DATETIME Parameters Execute SQL Task size limitation? Execute SQL Task using ADO.NET connection To execute a stored procedure with input parameters Execute SQL Task: Error Exec...
--Delete the table Exec('Delete from '+@tableName)--Reset identity column If exists( SELECT * FROM information_schema.columns WHERE COLUMNPROPERTY(OBJECT_ID( QUOTENAME(table_schema)+'.'+QUOTENAME(@tableName)), column_name,'IsIdentity')=1...
@Table varchar(250) ) as begin set nocount on declare @SQL varchar(1500) if exists ( select * from [dbo].[sysobjects] where [id] = object_id(@Tabl e) and objectproperty([id], N'IsUserTable') = 1 ) begin set @SQL = 'truncate table ' + @Table exec (@SQL) end set nocount ...
alter table test2 check constraint all; 缺点:同方法二,DML操作无法回滚 Delete总缺点:自增值未重置,会继续自增。 二、Truncate(a.自增键从初始值重新开始;b.无法事务回滚) 只能删除外键约束再truncate,最后再重新创建外键约束。 由于本次主要目的是:1.删除数据;2.重置自增值; ...
代码语言:sql 复制 droptabletable_name;droptableifexiststable_name; 注意: drop会删除整个表,包括表结构和数据,释放空间 立即执行,执行速度最快 不可回滚 1.3 删除/清空表数据:delete sql命令 代码语言:sql 复制 #删除部分数据deletefromtb_namewhereclause;#清空表,仅删除数据、保留表结构,同时也不释放表空间de...
If Exists(Select 1 From Sys.objects where TYPE = 'U' And name = 'PAOverridesSTG') Truncate Table PAOverridesSTG Else Begin Create Table PAOverridesSTG( OverrideID Int Identity(1,1) Not Null, PAKey Int Not Null, JobKey Int Not Null, ...
Truncate all tables in a SQL Server database Delete SQL Statement in SQL Server, Oracle and PostgreSQL SQL Drop Table Examples with T-SQL and SQL Server Management Studio SQL Server DROP TABLE IF EXISTS Examples About the author Aubrey Love is a self-taught DBA with more than six years of...