Teradata SQL? - response (1) by dnoeth

Of course:

SELECT MONTH_BGN_DATE 
FROM MONTHDAY_DIM 
WHERE MONTHDAY_KEY = ADD_MONTHS(DATE , -4)
OR  MONTHDAY_KEY = ADD_MONTHS(DATE , -3) 

If these are your actual queries, the 2nd closing parens "ADD_MONTHS(DATE , -3))" seems to indicate it's an excerpt from a more complex statement.
 
Dieter