Can we use two columns in CASE statement?

A CASE expression returns *one* value. If you, say, want to return two columns, each based on some condition, then you need to use two CASE expressions. Yes, you can evaluate different columns in the CASE statement.

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Can we use aggregate function in CASE statement?

The CASE statement can also be used in conjunction with the GROUP BY statement in order to apply aggregate functions.

How do you write multiple conditions in one CASE statement in SQL?

Here are 3 different ways to apply a case statement using SQL:

(1) For a single condition: CASE WHEN condition_1 THEN result_1 ELSE result_2 END AS new_field_name.
(2) For multiple conditions using AND: CASE WHEN condition_1 AND condition_2 THEN result_1 ELSE result_2 END AS new_field_name.

How do I SELECT multiple columns based on condition in SQL?

For example: Write a query in SQL to select a first name and last name of an employee who has either salary of 10000 or has the last name of Chauhan. Selecting columns first name and last name i.e. SELECT First_Name, Last_Name. Query: SELECT FirstName, LastName FROM Employee WHERE Salary=10000 OR LastName=’Chauhan’;

Can we have multiple CASE statements in SQL?

SQL case statement with multiple conditions is known as the Search case statement. So, You should use its syntax if you want to get the result based upon different conditions -.

Does MySQL care about case?

Consequently, the case sensitivity of the underlying operating system plays a part in the case sensitivity of database and table names. This means database and table names are not case sensitive in Windows, and case sensitive in most varieties of Unix.

Is SQL column names case sensitive?

The SQL Keywords are case-insensitive ( SELECT , FROM , WHERE , etc), but are often written in all caps. However in some setups table and column names are case-sensitive. MySQL has a configuration option to enable/disable it.

Is SQL CASE when exclusive?

This is standard SQL behaviour: A CASE expression evaluates to the first true condition. If there is no true condition, it evaluates to the ELSE part.