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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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13 cze 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;
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.
17 sie 2021 · Let’s look at a practical example of a simple CASE statement. Here is the order_summary table: Now say you are analyst in an ecommerce firm. You want to analyze orders based on their order value and divide them into buckets (very low, low, medium, high, and very high) according to their order value. The CASE statement can help you achieve this.
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. Syntax for SQL Server, Azure SQL Database and Azure Synapse Analytics. syntaxsql. Copy
16 sty 2024 · Whether you are a beginner navigating SQL or an experienced analyst, mastering the CASE WHEN statement is a key step toward unlocking deeper layers of data analysis. Dive further into its complexities with our articles How to Use CASE in ORDER BY in SQL and How to Use CASE WHEN in GROUP BY.
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.
