Question

Can you please let me know if stored procedure allow to handle compound condition as below:

if(
    ( (select Count(*) from dbo.Membership where EmailID=@emailID) >0) 
                                  || 
    ((select Count(*) from dbo.Allocation where ResourceEmail=@emailID)>0))
)

Answer 1

Use OR instead of ||

More optimal if just checking for existence, I’d use EXISTS instead of COUNT as it will stop when it first the first existence, instead of counting them all…

IF EXISTS(SELECT 1 FROM dbo.Membership WHERE EmailId = @emailID)
    OR EXISTS(SELECT 1 FROM dbo.Allocation where ResourceEmail=@emailID)
    BEGIN
       -- emailID exists in one of the 2 tables
    END