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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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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.
13 Ιουν 2021 · case-expression - something that produces a value. when-expression-x - something that is compared against the case-expression. value-1 - the result of the CASE statement if: the when-expression == case-expression.
3 Σεπ 2024 · 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. Both formats support an optional ELSE argument.
2 Ιουν 2023 · The syntax of the SQL CASE expression is: CASE [expression] WHEN condition_1 THEN result_1. WHEN condition_2 THEN result_2 ... WHEN condition_n THEN result_n. ELSE result. END case_name. The CASE statement can be written in a few ways, so let’s take a look at these parameters. Parameters of the CASE Statement.
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.
28 Ιουν 2023 · CASE expression. WHEN value1 THEN result1. WHEN value2 THEN result2. ... ELSE default_result. END. With this syntax, if the expression matches value1, the result would be result1. If expression matches value2, the result would be result2, and so on. If there’s no match, the default_result is returned. Searched Case Statements.
