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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)
Learn how to use the SQL CASE expression to check conditions and return values like an if-then-else statement. See examples of simple and complex CASE expressions with syntax and demo database.
3 Σεπ 2024 · Evaluates a list of conditions and returns one of multiple possible result expressions. The CASE expression has two formats: The simple CASE expression compares an expression to a set of simple expressions to determine the result. The searched CASE expression evaluates a set of Boolean expressions to determine the result.
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.
26 Ιουν 2023 · Learn how to use SQL CASE statement to filter data based on different conditions in the WHERE clause. See syntax, examples, and tips for using CASE with OR, AND, dynamic values, and expressions.
SELECT CASE WHEN EXISTS(subquery) THEN... There are some situations you can't use it (e.g. in a group by clause IIRC), but SQL should tell you quite clearly in that situation. Thanks
Use CASE: SELECT TABLE1.Id, CASE WHEN EXISTS (SELECT Id FROM TABLE2 WHERE TABLE2.ID = TABLE1.ID) THEN 'TRUE' ELSE 'FALSE' END AS NewFiled FROM TABLE1 If TABLE2.ID is Unique or a Primary Key, you could also use this:
