Mirror of <https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/iff.html> (Salesforce, Data 360 Query Guide), read 2026-10-23. Salesforce's own page is the authority; this copy exists because that site refuses non-browser readers.

IFF

Applies to: ✅ Data 360 SQL ✅ Tableau Hyper API

Returns the first expression when condition is true and the second expression if it is false.

• <condition>: Boolean condition to evaluate.
• <true_expr>: Expression returned when condition is true.
• <false_expr>: Expression returned when condition is false or NULL.

Returns the selected expression. Result expressions must be convertible to a common type.

• Requires a Boolean condition and exactly three arguments.
• A NULL condition returns <false_expr>.
• Compatible numeric result expressions can widen to a common type.

Select the first result when condition evaluates to true.

Returns yes.

Select the false result when condition is NULL.

Returns no.

• Conditional Expressions
• CASE
• NVL

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