MONTHS_BETWEEN(SYSDATE, last_stock_date)

   
SQL>
SQL> CREATE TABLE product (
  2       product_name     VARCHAR2(25),
  3       product_price    NUMBER(4,2),
  4       quantity_on_hand NUMBER(5,0),
  5       last_stock_date  DATE);

Table created.

SQL>
SQL> INSERT INTO product VALUES ('Small Widget', 99, 1, '15-JAN-03');

1 row created.

SQL> INSERT INTO product VALUES ('Medium Widget', 75, 1000, '15-JAN-02');

1 row created.

SQL> INSERT INTO product VALUES ('Product Number', 50, 100, '15-JAN-03');

1 row created.

SQL> INSERT INTO product VALUES ('Round Church Station', 25, 10000, null);

1 row created.

SQL>
SQL>
SQL>
SQL> SELECT product_name,
  2         last_stock_date,
  3         MONTHS_BETWEEN(SYSDATE, last_stock_date) STOCK_MONTHS
  4  FROM   product;

PRODUCT_NAME              LAST_STOC STOCK_MONTHS
------------------------- --------- ------------
Small Widget              15-JAN-03   65.1540293
Medium Widget             15-JAN-02   77.1540293
Product Number            15-JAN-03   65.1540293
Round Church Station

SQL>
SQL> DROP TABLE product;

Table dropped.

SQL>

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MONTHS_BETWEEN(SYSDATE, last_stock_date) : MONTHS_BETWEEN « Date Timezone « Oracle PL / SQL

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