PL/SQL SelectQuery/alias column(to_char())

SQL>
SQL>
SQL> select PRODUCT_NAME,
  2         to_char(PRODUCT_PRICE, '$9,999.00') "Price",
  3         to_char(QUANTITY_ON_HAND, '999,999') "On Hand",
  4         '  '|| to_char(LAST_STOCK_DATE, 'MON DD, YYYY') "Last Stocked"
  5  from   PRODUCT;

// product테이블에 product_price를price로 컬럼머리글을 지정하고 컬럼에 값에대한 포맷형식을 $9,999,00으로 지정했다. 나머지도 같은방식

PRODUCT_NAME              Price      On Hand  Last Stocked
------------------------- ---------- -------- --------------
Small Widget                  $99.00        1   JAN 15, 2003
Medium Widget                 $75.00    1,000   JAN 15, 2002
Product Number                $50.00      100   JAN 15, 2003
Round Church Station          $25.00   10,000