How to use case when in SELECT statement?

Can you do a case when in a WHERE statement?

Another way to use the Case Statement is within the WHERE clause. There, it may be utilized to alter the data fetched by a query based on a condition. Within that context, the Case Statement is ideally suited to both static queries, as well as dynamic ones, such as those that you would find inside a stored procedure. Lees verder »

When to use select case?

• Use If... Else when: You only need to check if something is true or false. You need to check many different things at the same time using “and” or “or”. ...
• Use Select Case when: You're checking one thing against a list of possible values. You want your code to be super clear and easy to understand.
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What is like %% in SQL?

The SQL LIKE Operator The LIKE operator is used in a WHERE clause to search for a specified pattern in a column. There are two wildcards often used in conjunction with the LIKE operator: The percent sign % represents zero, one, or multiple characters. The underscore sign _ represents one, single character. Lees verder »