SQL - Check Multiple Tables For Data (IF NOT EXISTS) in a Single IF Statement

Question:  How do you check for existence (IF EXISTS or IF NOT EXISTS) of data across multiple tables in a single if statement in SQL?

Answer:

IF NOT EXISTS (SELECT 1 FROM Table1) AND NOT EXISTS (SELECT 1 FROM Table2) AND NOT EXISTS (SELECT 1 FROM Table3)

BEGIN

PRINT 'DATA DOES NOT EXIST'

END

ELSE

BEGIN

PRINT 'DATA DOES EXIST'

END