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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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CASE WHEN Quantity > 30 THEN 'The quantity is greater than...
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SQL Statement: SELECT CustomerName, City, Country FROM...
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29 sie 2015 · COUNT(*) - returns the number of items in a group. This includes NULL values and duplicates. COUNT(ALL expression) - evaluates expression for each row in a group, and returns the number of nonnull values. COUNT(DISTINCT expression) - evaluates expression for each row in a group, and returns the number of unique, nonnull values. Docs for SUM:
The SQL CASE statement is used to check conditions and perform tasks on each row while selecting data. In this tutorial, you will learn about the SQL CASE statement with the help of examples.
2 cze 2023 · The SQL CASE statements lets you implement conditional logic directly in SQL. Learn all about the SQL CASE statement (plus examples) in this guide.
20 kwi 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.
17 sie 2021 · In SQL, the CASE statement returns results based on the evaluation of certain conditions. It is quite versatile and can be used in different constructs. It's a simple yet powerful way to make your data adapt and respond to various scenarios, making your database queries more dynamic and insightful.
28 cze 2023 · Understanding SQL Case Statements. SQL case statements are a versatile and powerful tool in the database programmer’s arsenal. They provide a method for performing conditional expressions within SQL queries and stored procedures.
