import type { FunctionDefinition } from '../../definition_types';
/**
 * Returns all unique values from the combined input fields (set union). Null values are treated as empty sets; returns `null` only if both fields are null.
 *
 * @example
 * ROW a = [1, 2, 3, 4, 5], b = [2, 3, 4, 5, 6]
 * | EVAL finalValue = MV_UNION(a, b)
 * | KEEP finalValue
 *
 * @example
 * ROW a = [1, 2, 3, 4, 5]::long, b = [2, 3, 4, 5, 6]::long
 * | EVAL finalValue = MV_UNION(a, b)
 * | KEEP finalValue
 *
 * @example
 * ROW a = [true, false], b = [false]
 * | EVAL finalValue = MV_UNION(a, b)
 * | KEEP finalValue
 *
 * @example
 * ROW a = [5.2, 10.5, 1.12345], b = [10.5, 2.6928]
 * | EVAL finalValue = MV_UNION(a, b)
 * | KEEP finalValue
 *
 * @example
 * ROW a = ["one", "two", "three"], b = ["two", "four"]
 * | EVAL finalValue = MV_UNION(a, b)
 * | KEEP finalValue
 */
declare const definition: FunctionDefinition;
export default definition;
//# sourceMappingURL=mv_union.d.ts.map