import type { FunctionDefinition } from '../../definition_types';
/**
 * Returns the approximate number of distinct values.
 *
 * Note: Counts are approximate.
 *
 * @example
 * FROM hosts
 * | STATS COUNT_DISTINCT(ip0), COUNT_DISTINCT(ip1)
 *
 * @example
 * FROM hosts
 * | STATS COUNT_DISTINCT(ip0, 80000), COUNT_DISTINCT(ip1, 5)
 *
 * @example
 * ROW words="foo;bar;baz;qux;quux;foo"
 * | STATS distinct_word_count = COUNT_DISTINCT(SPLIT(words, ";"))
 */
declare const definition: FunctionDefinition;
export default definition;
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