EMPTY()

All functions > CORE > EMPTY()

Returns an EMPTY filling for empty parameters in functions.

Signatures

Returns: A special EMPTY constant value

EMPTY() → EMPTY

Notes

• Represents an empty or absent value
• Used internally for optional parameters
• Different from NULL - represents intentional absence
• Part of the FeatureQL type system
• Used in function signatures to indicate optional positions

See also

• Core functions

Examples

SELECT
    f1 := TYPEOF(EMPTY()) -- EMPTY() is its own FeatureQL type
;