Table schema:
CREATE TABLE table_23802822_1 (_receipts VARCHAR, _or_shipments__$1 VARCHAR, sales INTEGER, establishments VARCHAR)

Question: If the establishment is 49319, what is the sales, receipts or shipments maximum amount?
SQL: SELECT MAX(sales), _receipts, _or_shipments__$1, 000 AS _ FROM table_23802822_1 WHERE establishments = 49319