OK, folks, here's a PL/SQL puzzle. It was originally posted on Twitter. I give you the link to that thread at the end of this post. But first....don't you want to try to solve the puzzle yourself? :-) Please note that the solutions to the puzzle have absolutely NOTHING to do with writing good code. They are simply exercising various features of the PL/SQL language. The puzzle Can you come up with just ONE STATEMENT to add to plsqlpuzzle_proc so that it can execute without terminating with an unhandled exception? Use this LiveSQL script as a starting point for your attempted solutions. CREATE TABLE plsqlpuzzle (n NUMBER) / CREATE OR REPLACE PROCEDURE plsqlpuzzle_proc IS r plsqlpuzzle%ROWTYPE; TYPE r_t IS TABLE OF plsqlpuzzle%ROWTYPE INDEX BY PLS_INTEGER; t r_t; BEGIN SELECT * INTO r FROM plsqlpuzzle; DBMS_OUTPUT.put_line (r.n); DBMS_OUTPUT.put_line (t (1).n); END; / BEGIN plsqlpuzzle_proc; END; / ORA-01403: no data...
For the last twenty years, I have managed to transform an obsession with PL/SQL into a paying job. How cool is that?