import type { FunctionDefinition } from '../../definition_types';
/**
 * Converts a multivalued expression into a single valued column containing the
 * first value. This is most useful when reading from a function that emits
 * multivalued columns in a known order like `SPLIT`.
 *
 * @example
 * ROW a="foo;bar;baz"
 * | EVAL first_a = MV_FIRST(SPLIT(a, ";"))
 */
declare const definition: FunctionDefinition;
export default definition;
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