Passing SQL stored procedure entirety of WHERE clause

Question

I have a SQL stored procedure of the form

SELECT [fields] FROM [table] WHERE @whereSql

I want to pass the procedure an argument (@whereSql)

Answer 1

I believe this can be done using Dynamic SQL. See below:

CREATE PROCEDURE [dbo].[myProc]
@whereSql nvarchar(256)

AS
    EXEC('SELECT [fields] FROM [table] WHERE ' + @whereSql)
GO

That said, you should do some serious research on dynamic SQL before you actually use it. Here are a few links that I came across after a quick search:

• http://www.sommarskog.se/dynamic_sql.html

• http://msdn.microsoft.com/en-us/library/aa224806%28SQL.80%29.aspx

• http://www.itjungle.com/fhg/fhg100505-story02.html