SQL Server - Query Short-Circuiting?

Question

Do T-SQL queries in SQL Server support short-circuiting?

For instance, I have a situation where I have two database and I\'m comparing data between the two tables to

Answer 1

You could add a computed column to the table. Then, index the computed column and use that column in the join.

Ex:

Alter Table Table1 Add PaddedId As Right('000000000000' + Id, 12)
Create Index idx_WhateverIndexNameYouWant On Table1(PaddedId)

Then your query would be...

select * from table1 where table1.PaddedID ='000000001234'

This will use the index you just created to quickly return the row.