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How do you speed up a slow stored procedure?
Improve stored procedure performance in SQL Server
- Use SET NOCOUNT ON.
- Use fully qualified procedure name.
- sp_executesql instead of Execute for dynamic queries.
- Using IF EXISTS AND SELECT.
- Avoid naming user stored procedure as sp_procedurename.
- Use set based queries wherever possible.
- Keep transaction short and crisp.
Do stored procedures run faster?
Stored procedures beat dynamic SQL in terms of performance. A stored procedure is cached in the server memory and its execution is much faster than dynamic SQL. If all the remaining variables are kept constant, stored procedure outperforms dynamic SQL.
Why does the same query take different times?
Either you are getting different performance because the system is under a different sort of load, you are getting different performance because of data volume changes, or you are getting different performance because you are getting different query plans.
Why are SSIS packages slower than ETL loads?
At a high level, SSIS package inefficiencies could be explained by poorly designed source queries, inefficient transformations, slow destination flows or incorrect package configurations. Although SSIS packages can handle a variety of data movement and transformation tasks, the solution described here focuses on ETL packages, feeding a DWH.
Why is SSIs so slow in SQL Server?
They had SQL Server Agent Jobs which were calling SSIS packages to populate their DWH and these jobs were running much slower than they used to and were failing occasionally. Using only SQL Server Management Studio (SSMS) I was able to diagnose the source of the problem and recommend a solution.
How to query fast, but slow from procedure?
And failing that, have the stored procedure call a stored procedure, call a UDF, call a UDF, call a stored procedure, call a UDF to query the view. To sum up, the following run fast from QA, but slow when put into a stored procedure: |–Sort (ORDER BY: ( [Expr1020] ASC, [Currencies].
How is an execute SQL task performed in SSIs?
In an Execute SQL Task, that work would be performed entirely on the same machine. I could run a package on server B that queries 1.25M rows from server A which will then be streamed over the network to server B.