Update on differences in table types (temp/var/user)

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Update on differences in table types (temp/var/user)

Steve Jones - SSC Editor

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September 4, 2013 at 10:27 am

#276768

I'd like a short piece that explains the differences between temp tables, table variables, regular tables, user defined table types.
When to use each.

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Gail Shaw SSC Guru Points: 1004504 More actions · Answer 1

If you don't mind waiting a few months, I can pick this one up.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass

Steve Jones - SSC Editor SSC Guru Points: 734418 More actions · Answer 2

Steve Jones - SSC Editor

SSC Guru

Points: 734418

September 4, 2013 at 10:35 am

#1647407

that's fine. just not too many months.

Jeff Moden SSC Guru Points: 1003851 More actions · Answer 3

Steve Jones - SSC Editor (9/4/2013)
I'd like a short piece that explains the differences between temp tables, table variables, regular tables, user defined table types.
When to use each.

What would you be looking for that Wayne Sheffield didn't include in his piece on the subject?

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

Steve Jones - SSC Editor SSC Guru Points: 734418 More actions · Answer 4

Perhaps not much. The UDTT isn't in there, but maybe something that more concisely shows some comparison code.

I'll think, but Wayne's article is a lot of discussion without a succinct comparison of where you might or might not use them. It's got lots of details, and is a reference I like, but I can see where it puts off someone just trying to make a decision of whether one is better than the other.