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The SQL CASE Expression. The CASE expression goes through conditions and returns 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. If no conditions are true, it returns the value in the ELSE clause.
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4 Νοε 2011 · However, more generally, you can nest CASE expressions, which would look something like this: CASE WHEN m.sign_date IS NOT NULL THEN 'COMPLETED' ELSE CASE WHEN m.start_date IS NOT NULL THEN 'IN PROGRESS' ELSE 'NOT STARTED' END END
3 Σεπ 2024 · CASE can be used in any statement or clause that allows a valid expression. For example, you can use CASE in statements such as SELECT, UPDATE, DELETE and SET, and in clauses such as <select_list> , IN, WHERE, ORDER BY, and HAVING.
20 Απρ 2021 · ELSE statements into your Microsoft SQL Server T-SQL code. CASE is used within a SQL statement, such as SELECT or UPDATE. Don’t mistake CASE for the IF ELSE control of flow construct, which is used to evaluate the conditional execution of SQL statements. Let’s illustrate with an example.
17 Αυγ 2021 · Explore CASE in SQL and master conditional logic with our comprehensive guide on the CASE statement. Includes practical examples and best practices.
To display a value based on your specific condition (s), you need to write a CASE statement. The syntax is: If condition_1 is met, then the retrieved value is value_1. If not, then the database checks for condition_2. If condition_2 is true, then the retrieved value is value_2.
12 Σεπ 2018 · This article explains the usage of the SQL Case in Where clause with examples when to use the Case statement in SQL Server
