Question

Possible Duplicates:
T-SQL stored procedure that accepts multiple Id values
Parameterizing a SQL IN clause?

I have a stored procedure who have to select values with a filter system.
Imagine a Table

ColA | ColB | ColC |

'A'    12     1
'B'    13     2
'C'    14     3

I need to give to stored procedure a list of ColC values for those a want the values, example (1,3)
will give me ‘A’ and ‘C’.

I know it is possible to do a IN statement like :

Select *
from Table
where ColC in (1,3)

But how make this dynamic? a solution will be to construct the sql command in a Varchar variable like

SET @MyList ='(1,3)'
SET @SQL = '
     Select *
    from Table
    where ColC in ' + @MyList 

And then execute @SQL

But is it the best way? To make dynamic command like this is not too heavy?

Thanks for advices.

Answer 1

There are plenty of different options on how to pass arrays to stored procedures, however, the common practice is building the query like you have shown, hence I think it’s the best solution here.

EDIT: Arrays in SQL 2008 still shows building a query as the first approach.