Conditional IF-THEN logic is a foundational concept in programming.

But there's no IF statement in SQL!

To do conditional logic in SQL, you use CASE expressions.

Watch the recording to learn how CASE works and use it in

* SELECT & WHERE clauses
* Aggregate and window functions
* PL/SQL code

Highlights include:

02:05 - Basic structure of CASE
04:35 - Simple vs searched CASE expressions
09:00 - Where you can use CASE in SQL
09:45 - Demo of CASE expressions
14:00 - Demo of top-to-bottom processing
20:20 - Using CASE in WHERE
22:55 - CASE in virtual columns
27:15 - Returning many values using CASE
30:40 - Dynamic WHERE clauses
33:10 - Conditional aggregation
35:55 - Demo ways to return many values
40:15 - Demo of "dynamic" where with CASE
44:50 - Demo of CASE inside COUNT, SUM, AVG
50:35 - CASE in PL/SQL
52:25 - CASE expressions vs statements in PL/SQL
55:45 - Extended CASE controls in PL/SQL in 23c
56:50 - Demo of CASE in PL/SQL

Get the scripts: https://bit.ly/SQL-ATOH-case-expressions-script
Learn SQL for free: https://devgym.oracle.com/pls/apex/dg/class/databases-for-developers-foundations .html