Select “where clause” evaluation order

Question

In Sql Server 2005 when I have multiple parameters do I have the guarantee that the evaluation order will always be from left to right?

Using an exa

Answer 1

The MS SQL Server query optimizer does short circuit, yes. Guaranteed.

Run this:

select 1 where 1 = 0 and 1 / 0 = 10

It will run just fine and not error even though you're dividing by zero because the query optimizer will short-circuit evaluate the where clause. This has implications for any where clause where you're "and"-ing and one of the and parts is a constant.