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END Code language: SQL (Structured Query Language) (sql) In this syntax, the CASE evaluates expressions specified in the WHEN clauses. If an expression evaluates to true. CASE returns the corresponding result in the THEN clause. Otherwise, it returns the result specified in the ELSE clause.
- Using MySQL CASE Statements in Stored Procedures - MySQL Tutorial
END CASE; Code language: SQL (Structured Query Language)...
- Using MySQL CASE Statements in Stored Procedures - MySQL Tutorial
3 Αυγ 2017 · END is the marker that closes the CASE expression. You must have exactly one END statement for every CASE Statement. The AS marker is used to introduce an alias.
The CASE statement goes through conditions and return a value when the first condition is met (like an IF-THEN-ELSE statement). So, once a condition is true, it will stop reading and return the result.
END CASE; Code language: SQL (Structured Query Language) (sql) In this syntax, the simple CASE statement sequentially compares the case_value is with when_value1, when_value2, and so on until it finds a match. When the CASE finds a case_value that is equal to a when_value, it executes statements in the corresponding THEN clause.
26 Ιαν 2024 · This guide aims to walk you through the nuts and bolts of using CASE-WHEN statements in MySQL 8 through practical examples and scenarios, enhancing both simple and complex querying tasks. Basic CASE-WHEN Syntax. The CASE statement in MySQL acts like an IF-THEN-ELSE statement found in many programming languages. Its simplest form looks like this:
25 Μαΐ 2024 · END AS 'how to execute case statement': The END keyword marks the end of the CASE expression, and the result is given the alias 'how to execute case statement'. Since the expression 2 matches the second WHEN condition, the result of this query is 'this is case two'.
Let’s look at an example to illustrate how the CASE statement can be used in a SELECT statement: SELECT employee_id, first_name, last_name, CASE WHEN salary >= 50000 THEN 'High Salary' WHEN salary >= 30000 THEN 'Medium Salary' ELSE 'Low Salary' END AS salary_category FROM employees;
