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Why is my stored procedure slow?
When you need to find out why a stored procedure is running slow, here’s the information to start gathering: Check to see if the plan is in the cache. Run sp_BlitzCache® and use several different @sort_order parameters – try cpu, reads, duration, executions. You can see the optimized parameters in the details.
Why stored procedure is faster than function?
There is no difference in speed between a query run inside a function and one run inside a procedure. Stored procedures have problems aggregating results, they cannot be composed with other stored procedures.
How stored procedure works in SQL?
Stored procedures differ from ordinary SQL statements and from batches of SQL statements in that they are precompiled. The first time you run a procedure, Adaptive Server’s query processor analyzes it and prepares an execution plan that is ultimately stored in a system table.
When does a stored procedure become very slow?
We are struggling with a strange problem: a stored procedure become extremely slow when raw SQL is executed fairly fast. SQL Server 2008 R2 Express Edition SP1 10.50.2500.0 with several databases on it.
Which is the fastest SQL Server stored procedure?
SQL Server 2008 R2 Express Edition SP1 10.50.2500.0 with several databases on it. a stored procedure which takes different parameters and does select among multiple tables from the database. The stored procedure was working pretty good and fast (it’s execution usually took 1-2 seconds).
Why does SQL Server run slow with different execution plan?
But putting the same SQL in a stored procedure runs slow, and with a totally different execution plan And it still runs the same (badly), and I’ve also changed the stored procedure to And back again, trying to really trick it into recompiling.
Is there a way to track stored procedure?
Whether it’s logged in the application, or the application logs to a table, it’s a much more reliable way to track stored procedure calls, parameters passed in, and how long they ran for. You can even track which users are running queries, and bring people running horrible ones in for training. This can take place a classroom or a dark alley.