Why does sp_executesql run slower when parameters are passed as arguments

Question

Query 1: (lightning fast)

sp_executesql \"select * from tablesView where Id = 1\"

vs.

Query 2: (too slow)

sp_executesql         


        

Answer 1

This could be a parameter sniffing problem. Try including the line:

OPTION (RECOMPILE)

at the end of your SQL query.

There is an article here explaining what parameter sniffing is: http://blogs.technet.com/b/mdegre/archive/2012/03/19/what-is-parameter-sniffing.aspx