There can be two ways to achieve CASE-Switch statements: Syntax of CASE statement in MySQL Basic syntax:
If there is no ELSE clause and none of the conditions are true, it simply returns NULL. If none of the conditions are true, it returns the value in the ELSE clause. Once a condition is true, it will stop traversing and return the result. The CASE statement goes through various conditions and returns values as and when the first condition is met (like an IF-THEN-ELSE statement in low-level languages). It is a kind of control statement which forms the cell of programming languages as they control the execution of other sets of statements. What is the CASE statement in MySQL?ĬASE statement in MySQL is a way of handling the if/else logic. We use SQL statements to perform tasks such as update, insert, delete or retrieve data from a database. According to ANSI (American National Standards Institute), it is considered as the standard language for relational database management systems (RDBMS). SQL is basically used to communicate with a database. I general, SQL is a standard language which helps to store, manipulate and retrieve data in databases. It is designed for managing data contained in a relational database management system(RDBMS), or for stream processing in a relational data stream management system.
SQL is a domain-specific language which is extensively used in programming. The following topics will be covered in this article:
#Mysql case select how to#
In this article on the CASE statement in MySQL, I will discuss how to use this statement, to retrieve data on a single condition or multiple conditions. With a humongous amount of data getting generated every day, it is important to retrieve data based on a few conditions.
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