AND EXISTS(SELECT * FROM #temp WHERE cast(UPC as varchar)=cast( a.ITEM as varchar) ) I only took a guess. I think your SQL really needs to join [ITEM] a and [LOC] b together. I think you also need to join to both columns on the temp table. ...
if exists ( object_id('Tempdb..#temp') ) 也不行，因为无论是否存在表#temp都会返回一行的，所以这个条件永远成立 应该用 if ( object_id('Tempdb..#temp') is not null)DROP TABLE #temp GO
Database developers can read SQL tutorialDROP Table If Table Exists Command on a SQL Server Databasefor methods used to test the existence of a database table on SQL Server. Of course, it is not as easy to check the object_id() of a temp table. It is some more tricky. Let's work...
Finally, as discussed, temp tables are scoped so that if they're created from within a stored proc they're automatically destroyed at the end of that proc and thus are only visible to nested procs that are called. If you create a temp table outside of a stored proc (eg in a QA/SSM...
So here’s the easy solution. 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 ...
Older versions of SQL Server does not have DIY or DROP IF EXISTS functionality. So, we have to use the old technique of checking for the object using OBJECT_ID. Let’s see how to use it. 1 2 3 4 5 6 7 IF OBJECT_ID('tempdb..#TempTable') IS NOT NULL ...
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 Azure SQL Database you can use DROP IF EXISTS (DIE) syntax:
41. 使用存储过程 创建temp_table表之前,判断,if exists then drop 1. 2. 此语句示例在pl/sql developer中执行 ”/”必须在行首,之前不能有空格 begin dropObject('temp_table','table'); end; / create table 1. 2. 3. 4. 5. 6. 7.
使用SQL IF语句检测行是否存在 ,可以通过以下步骤实现: 首先,需要使用SELECT语句来查询目标表中是否存在符合条件的行。例如,假设我们要检测表名为"users",并且需要检测的条件是"username = 'John'",则可以使用以下SELECT语句: 首先,需要使用SELECT语句来查询目标表中是否存在符合条件的行。例如,假设我们要检测表名为...