SQL WHERE.. IN clause multiple columns

Question

I need to implement the following query in SQL Server:

select *
from table1
WHERE  (CM_PLAN_ID,Individual_ID)
IN
(
 Select CM_PLAN_ID, Individual_ID
 From CR         


        

Answer 1

Why use WHERE EXISTS or DERIVED TABLES when you can just do a normal inner join:

SELECT t.*
FROM table1 t
INNER JOIN CRM_VCM_CURRENT_LEAD_STATUS s
    ON t.CM_PLAN_ID = s.CM_PLAN_ID
    AND t.Individual_ID = s.Individual_ID
WHERE s.Lead_Key = :_Lead_Key

If the pair of (CM_PLAN_ID, Individual_ID) isn't unique in the status table, you might need a SELECT DISTINCT t.* instead.