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temp table in sql

Posted on 2014-10-15
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Last Modified: 2014-10-15
I want to select from a table and put it in temptable. I created a simple one below. My question is if two users load aspx page
at the same them, let's say, user1 starts first and user2 starts right after, user2 wouldn't  drop #temp_1, right while
user1 running?

DROP TABLE #TEMP_1
SELECT * INTO #TEMP_1
FROM (select itemno, cid, shippdate, etc...) a
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Question by:VBdotnet2005
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5 Comments
 
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Accepted Solution

by:
Aneesh Retnakaran earned 167 total points
ID: 40382436
each temp table is unique for session. So in your case answer is yes
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Assisted Solution

by:Lee Savidge
Lee Savidge earned 166 total points
ID: 40382442
No you wouldn't have a problem. Tables declared with #temp for example, are only available to that session. If they are named ##temp for example, then they are available globally to all sessions. In your example each user would connect under a different SPID which will prevent any crossover. They would in effect, get their own #temp tables.
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LVL 65

Assisted Solution

by:Jim Horn
Jim Horn earned 167 total points
ID: 40382446
The above answers are correct.

As an aside, T-SQL will throw an error if it attepts to drop a table that doesn't exist, so add this to your code..
IF OBJECT_ID('tempdb..#TEMP_1) IS NOT NULL
   DROP TABLE #TEMP_1
GO

SELECT * INTO #TEMP_1
FROM (select itemno, cid, shippdate, etc...) a

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Author Comment

by:VBdotnet2005
ID: 40382453
Thanks guys. You are the best.
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Author Comment

by:VBdotnet2005
ID: 40382557
IF OBJECT_ID('tempdb..#TEMP_1') IS NOT NULL
   DROP TABLE #TEMP_1
GO

SELECT * INTO #TEMP_1
FROM (select itemno, cid, shippdate, etc...) a
0

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