16. Which SQL statement is used to update data in a database?
17. Which SQL statement is used to delete data FROM a database?
18. Which SQL keyword is used to sort the result-set?
19. The SQL statement
SELECT SUBSTR('123456789', INSTR('abcabcabc', 'b'), 4) FROM DUAL;
SELECT SUBSTR('123456789', INSTR('abcabcabc', 'b'), 4) FROM DUAL;