![]() ![]() WHEN search_condition THEN statement_list Instead of providing a result for each WHEN clause to set a column value, you can provide a list of statements to be executed. The CASE statement is best used for stored programs and has a slightly different syntax. | 5 | Zak | It's not short for anything | | 4 | Pip | It's not short for anything | Otherwise, the column name would default to the query text, which looks very messy and is functionally useless.īoth of the above queries will return: | id | name | fullname | Note that in both of the above examples, the AS statement is used to name the column generated by the CASE operator. If you are building case statements using more than a single column, you can omit the column name from the CASE statement and use the column names in each WHEN statement: SELECT *, A final ELSE statement can be provided as a catch-all for any records which do not meet one of the CASE condition.You can provide as many WHEN statements as required.There are two variations in the syntax depending on what you are trying to achieve.The syntax is as follows: CASE case_value WHEN compare_value THEN result END The CASE operator is used in MySQL queries – it is the most commonly used of the CASE operator/statement (and is probably the one you’ve just googled for). The CASE Statement, for use in stored programs and procedures.īoth have similar syntax and the same purpose.īoth MySQL CASE Operator and Statement provide control over the results based on a set of conditions.Įxamples in this article will use the following test data:.There are two things called CASE in MySQL (and, by extension, the compatible MariaDB).
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