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22 gru 2011 · Try this query - SELECT t2.company_name, t2.expose_new, t2.expose_used, t1.title, t1.seller, t1.status, CASE status WHEN 'New' THEN t2.expose_new WHEN 'Used' THEN t2.expose_used ELSE NULL END as 'expose' FROM `products` t1 JOIN manufacturers t2 ON t2.id = t1.seller WHERE t1.seller = 4238
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.
In this tutorial, you will learn how to use the MySQL CASE expression to add if-else logic to SELECT, WHERE, and ORDER BY of a query.
26 sty 2024 · The CASE-WHEN statement in MySQL 8 is a robust tool for building dynamic and responsive SQL queries. Varying from basic conditional output to more complex evaluations involving subqueries and joins, CASE-WHEN can help you derive nuanced insights from your data in an elegant fashion.
This tutorial shows you how to use the MySQL CASE statements, including simple CASE and searched CASE statement, in stored procedures.
The CASE function is often used in conjunction with the SELECT statement to create more flexible and dynamic queries. Syntax. The basic syntax of the CASE function in MySQL is as follows: CASE WHEN condition1 THEN result1 WHEN condition2 THEN result2 ... WHEN conditionN THEN resultN ELSE default_result END
25 maj 2024 · CASE can be used to transform data on-the-fly. For example, you can use it to categorize or label data based on specific criteria. You can use CASE to dynamically select different columns based on specific conditions. CASE allows you to set up contingency plans in case certain conditions are not met.
