Where clause converts text with date value format to date value
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 ('S', 99, 1, '15-JAN-03'); 1 row created. SQL> INSERT INTO product VALUES ('M', 75, 1000, '15-JAN-02'); 1 row created. SQL> INSERT INTO product VALUES ('C', 50, 100, '15-JAN-03'); 1 row created. SQL> INSERT INTO product VALUES ('R', 25, 10000, null); 1 row created. SQL> SQL> SELECT * FROM product; PRODUCT_NAME PRODUCT_PRICE QUANTITY_ON_HAND LAST_STOC ------------------------- ------------- ---------------- --------- S 99 1 15-JAN-03 M 75 1000 15-JAN-02 C 50 100 15-JAN-03 R 25 10000 SQL> SQL> SELECT * FROM product WHERE last_stock_date = '09-JUL-00'; no rows selected SQL> SQL> DROP TABLE product; Table dropped. SQL> SQL>