Question

Basically, I have a table of support users, and there are different user’s of different levels in different departments.

So let’s say I basically have the following table:

id | userID | deptID | level
1      1        1        1
2     119       1        2
3      2        1        3
4     101       2        1
5     104       2        2

And I have the id number, so let’s say, I want to get all users with the same deptID as the user in id:3, thus returning the first three lines.

What kind of SQL statement would that be?

Answer 1

You can use the following query, that contains a subquery:

SELECT * 
FROM <table> 
WHERE deptID=(
              SELECT deptID FROM <table> WHERE userID=3
             )