CASE statement

A conditional statement that can be used to evaluate exissions and return a result.

Syntax

     CASE
        WHEN expression THEN result
        [ ...n ]
        [ ELSE result ]
     END

[ ] marks optional statements

Arguments

WHEN expression - The expression to evaluate.
THEN result - If expression evaluates True then result is returned.
ELSE result - If expression evaluates False then result is returned.

Example

    CASE
        WHEN "column" IS NULL THEN 'None'
    END