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7 Αυγ 2013 · SELECT * FROM dbo.CompanyMaster WHERE AreaId= (CASE WHEN EXISTS (SELECT BusinessId FROM dbo.AreaSubscription WHERE AreaSubscription.BusinessId = CompanyMaster.BusinessId) THEN @AreaId ELSE AreaId END) AND AreaId IN (SELECT [@Areas].AreaId FROM @Areas)
16 Ιαν 2024 · Unlock the power of SQL CASE WHEN with 10 beginner-friendly exercises. Learn to categorize and manipulate data dynamically, enhancing your data analysis skills!
29 Αυγ 2024 · Are there best practices around SQL EXISTS? This SQL tutorial will explain what the keyword EXISTS does and show several different use cases. The EXISTS keyword is a Boolean function that returns either true or false. Since it is a function, it expects a parameter within a set of parentheses (…).
20 Απρ 2021 · In the T-SQL scripting language, you can use the SQL CASE statement to evaluate a condition and return one or more result expressions. This SQL Tutorial will teach you when and how you can use CASE in T-SQL statements.
This tutorial shows you how to use the SQL Server CASE expression to add if-else logic to SQL queries with many practical examples.
26 Ιουν 2023 · We can use CASE in SQL statements such as SELECT, WHERE, and ORDER BY. The CASE statement in the WHERE clause can conditionally filter rows based on defined criteria. The syntax for the CASE statement in the WHERE clause is shown below. The CASE expression matches the condition and returns the value of the first THEN clause.
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.
