Question

I need to build a WHERE clause based on the parameter that is been passed into a stored procedure.

For example: if param1 value is 1 then do like condition,

 @param1 like '%'+ product.Status + '%' 

else I want to ignore the like condition and it would return all rows….

How would I do it in the WHERE clause? Thanks,

Answer 1

SO you need to alter the where clause depending on a parameter. Use sp_executesql: you can build the query as a string, so you can add the where clause if @param = 1:

declare @sql varchar(1024)
declare @where varchar(1024)
set @sql = N'SELECT field1, field2, field3 FROM myTable'
set @where = N' WHERE columnName like '%'+ product.Status + '%''
case when @param = 1 then concat(@sql,@where)
execute sp_executesql @sql