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You can rewrite it to use the ELSE condition of a CASE: SELECT status, CASE status WHEN 'i' THEN 'Inactive' WHEN 't' THEN 'Terminated' ELSE 'Active' END AS StatusText FROM stage.tst
7 Δεκ 2023 · How to use case in select. How to use case in where. How to use case in joins. Case in PL/SQL. If you'd like to see a demo, check the recording of the Ask TOM Office Hours on case expressions. Finally get the scripts and the case in SQL cheat sheet. Map key-value pairs with simple CASE expressions.
For example, you can use the CASE expression in statements such as SELECT, UPDATE, or DELETE, and in clauses like SELECT, WHERE, HAVING, and ORDDER BY. Oracle CASE expression has two formats: the simple CASE expression and the searched CASE expression. Both formats support an optional ELSE clause.
In a simple CASE expression, Oracle Database searches for the first WHEN... THEN pair for which expr is equal to comparison_expr and returns return_expr. If none of the WHEN... THEN pairs meet this condition, and an ELSE clause exists, then Oracle returns else_expr. Otherwise, Oracle returns null.
This Oracle tutorial explains how to use the Oracle / PLSQL CASE statement with syntax and examples. The Oracle / PLSQL CASE statement has the functionality of an IF-THEN-ELSE statement. Starting in Oracle 9i, you can use the CASE statement within a SQL statement.
Script Name Simple SQL CASE example. Description In this simple CASE expression, Oracle Database evaluates the first WHEN and returns the THEN if satisfied. It next considers the next WHEN condition. If none of the when conditions are met the ELSE is taken. Area SQL General.
26 Ιαν 2018 · Learn about the CASE statement, a conditional flow control syntax, which also exists for SQL! Oracle has put it in both PL/SQL and into the SQL engine.
