SQL Conditional Where

Question

I have a Stored Procedure called spGetOrders which accepts a few parameters: @startdate and @enddate. This queries an \"Orders\" table. One of the columns in the table is

Answer 1

Try this:

select * from orders o
where o.orderdate between @startdate AND @enddate
and ((@Closed = 1 And o.ClosedDate IS NULL) Or (@Closed = 0 And o.ClosedDate IS NOT NULL))

Be vary careful about mixing AND's and OR's in the where clause. When doing this, the parenthesis to control the order of evaluation is VERY important.

Answer 2

Basicly, write it out.

select * from orders o
where o.orderdate between @startdate AND @enddate
and ((@Closed = 1 and o.ClosedDate IS NULL)
    or (@Closed != 1 and o.ClosedDate IS NOT NULL))

double, can be removed

Answer 3

SQL Statement:

SELECT *  
FROM orders  
WHERE orderdate BETWEEN @startdate AND @enddate  
AND (@Closed = 1 OR CLosedDate IS NOT NULL)

Answer 4

Or this:

select * from orders o
where o.orderdate between @startdate AND @enddate
and (  (@Closed = 1 AND o.ClosedDate IS NULL)
     OR (ISNULL(@Closed, 0) <> 1 AND o.ClosedDate IS NOT NULL)
     )

It looks like you want all the orders between two dates that have inconsistent Close information. The other suggestions are probably as good (or better) but I'm pretty sure that this works and is readable to me (most of the other suggestions appeared as I was typing).

Good luck!