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Learn how to use the Oracle CASE expression to add if-else logic to SQL statements without calling a procedure. See examples of simple and searched CASE expressions in SELECT, UPDATE, and HAVING clauses.
Learn how to use CASE expressions to apply IF ... THEN ... ELSE logic in SQL statements without procedures. See syntax, examples, and data type rules for simple and searched CASE expressions.
select case substr(status,1,1) -- you're only interested in the first character. when 'a' then 'Active'. when 'i' then 'Inactive'. when 't' then 'Terminated'. end as statustext. from stage.tst. However, there's a few worrying things about this schema.
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.
7 gru 2023 · You can use a case expression like this: The database processes the expression from top-to-bottom. It returns the value for the first when clause that is true. If none are true (the percentage is less than 50 or null), it returns the value in the else clause which is F.
The simple CASE statement evaluates a single expression and compares it to several potential values. The searched CASE statement evaluates multiple Boolean expressions and chooses the first one whose value is TRUE.
Learn how to use the CASE statement to choose from a sequence of conditions and execute a corresponding statement in Oracle Database SQL. See syntax, examples, and usage notes for simple and searched CASE statements.
