I was made aware of the book Code Complete by Steve McConnell almost by accident. I was attending an Oracle presentation back in 2001 and the presenter, Steven Feuerstein mentioned the book. I can’t remember what context it was mentioned in but I remembered I had to get a copy. Reading the first edition of Code […]
One of the popular exercises when learning a new language is to develop a FizzBuzz program. This is where you print out the all the numbers from 1 to 100 except if a number is a multiple of 3 you print out Fizz and if the number is a multiple of 5 you print out […]
I was recently working through Chapter 9 of the 12c Database 2 Day Developer’s Guide and found the following bug in the sample code. Here is the original code: FUNCTION add_department ( p_department_name IN departments.department_name%TYPE, p_manager_id IN departments.manager_id%TYPE ) RETURN departments.department_id%TYPE IS l_department_id departments.department_id%TYPE; BEGIN INSERT INTO departments ( department_id, department_name, manager_id ) VALUES ( departments_sequence.NEXTVAL, […]
Introduced in Oracle Database 11.1 The PL/SQL CONTINUE statement allows you to skip the current loop iteration. It can be used conditionally and unconditionally. Unconditional Example BEGIN FOR i IN 1 .. 10 LOOP IF i = 2 THEN CONTINUE; END IF; DBMS_OUTPUT.PUT(i || ‘, ‘); END LOOP; DBMS_OUTPUT.NEW_LINE; END; In the example above, there is […]
Oracle 12c introduced the Identity Column. You can find out more about this feature in the new features guide and within the CREATE TABLE documentation. In this article I will use Tom Kyte’s run stats utility to compare the performance of the IDENTITY column with the explicit use of a sequence object. The script below will be used to […]
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