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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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Your case statement returns 1 in all cases. The case statement is also combining two different types of CASE semantics: CASE @Period WHEN <condition> THEN <result> WHEN <other condition> THEN <result> ELSE <result> END
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. Transact-SQL syntax conventions.
16 sty 2024 · In the realm of SQL, the CASE WHEN statement functions much like an if-then-else expression, allowing us to create custom classifications within a query. Other programming languages use similar logic – e.g. Python uses if, elif, and else, and JavaScript uses the switch statement.
The SQL CASE expression allows you to evaluate a list of conditions and returns one of the possible results. The CASE expression has two formats: simple CASE and searched CASE. You can use the CASE expression in a clause or statement that allows a valid expression.
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. Solution. The CASE expression is used to build IF … THEN … ELSE statements into your Microsoft SQL Server T-SQL code.
SQL Server CASE expression evaluates a list of conditions and returns one of the multiple specified results. The CASE expression has two formats: simple CASE expression and searched CASE expression. Both of CASE expression formats support an optional ELSE statement.
