?
Solved

# vs ##

Posted on 2013-10-24
2
Medium Priority
?
151 Views
Last Modified: 2013-10-24
1)
when a stored proc uses a temp table, and that sp will be hit by 10s of users at the same time, which is more preferred for temptables - # or ##?

2)
which is better for indexing? # or ## tables?
0
Comment
Question by:25112
2 Comments
 
LVL 70

Assisted Solution

by:Éric Moreau
Éric Moreau earned 400 total points
ID: 39596701
why not create a permanent table then? your sp wouldn't to handle table creation, indexes, ...
0
 
LVL 5

Accepted Solution

by:
MohitPandit earned 1600 total points
ID: 39596775
Hello,

1. For concurrency you need to use Local temp table only i.e. (#) NOT Global temp table (i.e. ##).
Please note, if you will use ## then DB engine will give an error in case concurrent execution same procedure by multiple users
There is already an object named '##...' in the database

2. Indexes performs same on both.

You may also take a look over this link
https://www.simple-talk.com/sql/t-sql-programming/temporary-tables-in-sql-server/

Kindly take a look over it and let me know in case you have any concern.

Best Regards,
Mohit Pandit
0

Featured Post

How to Use the Help Bell

Need to boost the visibility of your question for solutions? Use the Experts Exchange Help Bell to confirm priority levels and contact subject-matter experts for question attention.  Check out this how-to article for more information.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

After restoring a Microsoft SQL Server database (.bak) from backup or attaching .mdf file, you may run into "Error '15023' User or role already exists in the current database" when you use the "User Mapping" SQL Management Studio functionality to al…
In this article we will get to know that how can we recover deleted data if it happens accidently. We really can recover deleted rows if we know the time when data is deleted by using the transaction log.
Screencast - Getting to Know the Pipeline
Look below the covers at a subform control , and the form that is inside it. Explore properties and see how easy it is to aggregate, get statistics, and synchronize results for your data. A Microsoft Access subform is used to show relevant calcul…

850 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question