I have a code written in cache sql and trying to understand it, below is the code , can anyone help me understand what does that mean
ex - !! dosage_unit !!
SELECT (CASE WHEN (order_description IS NULL OR (order_description='')) THEN '' ELSE (order_description) END) !! (CASE WHEN (dosage IS NULL OR dosage_unit IS NULL OR (dosage='') OR (dosage_unit='')) THEN '' ELSE (', ' !! dosage !! ' ' !! dosage_unit !!
Thank You in advance.