Commonly used code in Oracle
Changing case To change the first letter of the word to cap, use the inicap function. Use upper to covert to uppercase and lower to convert to lower case. Examples:…
What is PL/SQL
Procedural Language extension of SQL (PL/SQL) combines SQL with procedural programming features such as looping, conditionals, and reusable blocks. PL/SQL engine processes PL/SQL statements. PL/SQL statements can reside on the…
Oracle set operators: union, intersect, minus
The most commonly used set operators in Oracle are: union intersect minus Union Union combine results returned by two or queries into a single table. In a union, all tables…
Oracle NVL and NVL2 functions
NVL function NVL function can be used to substitute a value when null in encountered. It has the following syntax: If string has a value, it will be displayed. If…
Listing Objects in Oracle
If you want to list tables in MySQL, you simply type the following command: Oracle does not provide such a short cut. You have to type the following command: The…
Adding a leading dollar sign ($) in front of a number in Oracle
presenting numerical data with a leading dollar sign adds a touch of clarity and professionalism to reports and queries. Whether you’re a seasoned database administrator or a budding SQL enthusiast,…