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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
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.
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.
19 Απρ 2019 · I have a case statement that is causing trouble for the formatter and code outline. select case when "a" < "b" then "b" else "a" end from dual;--Here, "a" is a static value and "b" is a case statement. for example, select case when 2 < case when 1=1 then 1 else 0 end then case when 1=1 then 1 else 0 end else 2 end
26 Ιαν 2018 · The CASE statement is conditional flow control syntax. Many languages have this feature. Oracle has implemented it in both PL/SQL and into the SQL engine. In PL/SQL, there are two flavors. First, the CASE statement evaluates the contents of a variable and returns a value (implemented as a function).
7 Δεκ 2023 · Ensuring the when clauses are in the correct order is one of many things to be aware of when writing case expressions. In this post we’ll dive into: Simple case expressions. Searched case expressions. How to use case in select. How to use case in where. How to use case in joins. Case in PL/SQL.
See the example below. SELECT. CASE testStatus . WHEN 'A' THEN 'Authorized' WHEN 'C' THEN 'Completed' WHEN 'P' THEN 'In Progress' WHEN 'X' THEN 'Cancelled' END AS Status, CASE testStatus . WHEN 'A' THEN authTime. WHEN 'C' THEN cmplTime. WHEN 'P' THEN strtTime. WHEN 'X' THEN cancTime. END AS lastEventTime, CASE testStatus . WHEN 'A' THEN authBy.
