https://datareportive.com/tutorial/postgresql/how-to-write-a-case-statement/
How to Write a CASE Statement in PostgreSQL | DataReportive Tutorials
Learn how to write and use CASE statements in PostgreSQL to add conditional logic to your SQL queries. Step-by-step guide with examples.
how to write a case statementpostgresqltutorials
https://datareportive.com/tutorial/mysql/how-to-write-a-case-statement/
How to Write a CASE Statement in MySQL | DataReportive Tutorials
Learn how to use the MySQL CASE statement to handle conditional logic in your queries. This tutorial explains syntax and provides examples for various...
how to write a case statementmysqltutorials