Αποτελέσματα Αναζήτησης
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.
2 Δεκ 2011 · A CASE statement can return only one value. You may be able to turn this into a subquery and then JOIN it to whatever other relations you're working with. For example (using SQL Server 2K5+ CTEs):
20 Αυγ 2024 · In this article, we’ll explore how to use the CASE statement with multiple conditions, providing simple examples that should work across most major relational database management systems (RDBMS s).
13 Ιουν 2021 · Here are the CASE expression examples from the PostgreSQL docs (Postgres follows the SQL standard here): SELECT a, CASE WHEN a=1 THEN 'one' WHEN a=2 THEN 'two' ELSE 'other' END FROM test; or. SELECT a, CASE a WHEN 1 THEN 'one' WHEN 2 THEN 'two' ELSE 'other' END FROM test;
16 Ιαν 2024 · What happens if we have more than one condition we want to apply to our data? The following example shows how to use the CASE WHEN statement's syntax with multiple conditions. This offers a method for classifying data according to different standards:
23 Αυγ 2024 · Multiple CASE WHEN statements allow you to implement conditional logic in SQL queries, allowing for the evaluation of multiple conditions and the execution of different actions based on those conditions. Here is the basic syntax of a Multiple CASE WHEN statement:
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.
