Why do we use case in mysql?
Summary: in this tutorial, you will learn how to use the MySQL Show
Introduction to MySQL CASE expressionMySQL The Note that MySQL has a Simple CASE expressionThe following illustrates the syntax of a simple
In this syntax, The Searched CASE expressionThe following shows the syntax of a searched
In this
syntax, the The MySQL CASE expression examplesA) Using CASE expression in the SELECT clause exampleSee the following The following statement returns the customers and their orders:
This example uses the
B) Using CASE expression in the ORDER BY clause exampleThe following example uses the
Try It Out C) Using CASE expression with an aggregate function exampleThe following example uses the
Try It Out Here is the output: How it works.
In this tutorial, you have learned how to use the MySQL
Was this tutorial helpful? Why CASE is used in MySQL?CASE() function in MySQL is used to find a value by passing over conditions whenever any condition satisfies the given statement otherwise it returns the statement in an else part. However, when a condition is satisfied it stops reading further and returns the output.
Is CASE used in MySQL?The CASE function can be used in the following versions of MySQL: MySQL 5.7, MySQL 5.6, MySQL 5.5, MySQL 5.1, MySQL 5.0, MySQL 4.1, MySQL 4.0, MySQL 3.23.
What is the function of CASE in SQL?CASE can be used in any statement or clause that allows a valid expression. For example, you can use CASE in statements such as SELECT, UPDATE, DELETE and SET, and in clauses such as select_list, IN, WHERE, ORDER BY, and HAVING.
What are CASE functions used for?Case functions return specified data in a SQL query based on the evaluation of user-defined conditions. In general, a user specifies a list of conditions and corresponding return values.
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