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IF THEN ELSE statement

Applies to: check marked yes Databricks SQL check marked yes Databricks Runtime 16.3 and above

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Executes lists of statements based on the first condition that evaluates to true.

This statement may only be used within a compound statement.

Syntax​

IF condition  THEN { stmt ; } [...]
  [ { ELSEIF condition THEN { stmt ; } [...] } [...] ]
  [ ELSE { elseStmt ; } [...] ]
  END IF

Parameters​

  • condition

    Any expression evaluating to a BOOLEAN.

  • stmt

    A SQL statement to execute if the condition is true.

  • elseStmt

    A SQL statement to execute if no condition is true. That is all condition are false or null.

Examples​

SQL
> BEGIN
    DECLARE choice DOUBLE DEFAULT 3.9;
    DECLARE result STRING;
    IF choice < 2 THEN
      VALUES ('one fish');
    ELSEIF choice < 3 THEN
      VALUES ('two fish');
    ELSEIF choice < 4 THEN
      VALUES ('red fish');
    ELSEIF choice < 5 OR choice IS NULL THEN
      VALUES ('blue fish');
    ELSE
      VALUES ('no fish');
    END IF;
  END;
 red fish
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