Why does a stored procedure take so long to execute?

How do I speed up a stored procedure execution?

1Specify column names instead of using * in SELECT statement. Try to avoid * ... 2Avoid temp temporary table. Temporary tables usually increase a query's complexity. ... 3Create Proper Index. Proper indexing will improve the speed of the operations in the database.4Use Join query instead of sub-query and co-related subquery.

Why stored procedures are slow?

Storage of Execution Plan – One of the biggest reasons why you are facing slow procedures in SQL Server is probably because your Execution plan is stored in the cache. To find out if it is in the cache, you need to search it there and see if it exists in the top 10 appearing plans.

Why are stored procedures faster to execute?

Stored procedures are precompiled and optimised, which means that the query engine can execute them more rapidly. By contrast, queries in code must be parsed, compiled, and optimised at runtime. This all costs time.

Is stored procedure faster than function?

As you can see, the scalar functions are slower than stored procedures. In average, the execution time of the scalar function was 57 seconds and the stored procedure 36 seconds. ... 3. Are the scalar functions evil?Stored procedure execution time (s)Function execution time (s)3558Average: 35.8Average: 57.4