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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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16 sty 2024 · Unlock the power of SQL CASE WHEN with 10 beginner-friendly exercises. Learn to categorize and manipulate data dynamically, enhancing your data analysis skills!
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;
17 sie 2021 · Explore CASE in SQL and master conditional logic with our comprehensive guide on the CASE statement. Includes practical examples and best practices.
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.
3 wrz 2024 · 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.
26 cze 2023 · The SQL CASE statement specifies a conditional expression to perform different actions depending on the input expression value. The syntax for the CASE statement in a SQL database is: CASE expression. WHEN value1 THEN result1. WHEN value2 THEN result2. ... WHEN valueN THEN resultN. ELSE defaultValue. END.
