Please start any new threads on our new
site at https://forums.sqlteam.com. We've got lots of great SQL Server
experts to answer whatever question you can come up with.
| Author |
Topic |
|
rgombina
Constraint Violating Yak Guru
319 Posts |
 Posted - 2008-12-18 : 06:19:04
|
| Hi there,The performance of my SQL tasks is significantly degrading after certain record output block. I have multi-statement steps to pivot rows and dump data to a stage table using TABLE variables. Is there a way to release/dispose TABLE variable's data and perhaps the cause of performance issue?The same multi-statements of 10,000 rows output takes 3 miutes versus 20 minutes on 25,000 rows output.Thanks. |
|
|
SwePeso
Patron Saint of Lost Yaks
30421 Posts |
Posted - 2008-12-18 : 06:51:41
|
If the totalt data exceeds two pages, I have found that table variables are slow, much slower than temp tables.
E 12°55'05.63"N 56°04'39.26" |
 |
|
|
rgombina
Constraint Violating Yak Guru
319 Posts |
Posted - 2008-12-18 : 07:04:29
|
| Yes definitely more than two pages and also tried temp table, which is faster. I'm going to divide it and see if helps perfornamce. Thanks. |
|
|
|
robvolk
Most Valuable Yak
15732 Posts |
Posted - 2008-12-18 : 07:17:47
|
| Keep in mind that indexing can be a tremendous help to performance, and temp tables can be indexed like any other table. Take a close look at your query plans and test some index options. |
|
|
|
|
|
|
Performance/table variable question