/**
 * PostgreSQL pg_stat_kcache - Shared Helpers
 *
 * Version-aware column name detection for pg_stat_kcache.
 */
import type { PostgresAdapter } from "../../postgres-adapter.js";
/**
 * Column naming in pg_stat_kcache changed in version 2.2:
 * - Old (< 2.2): user_time, system_time, reads, writes
 * - New (>= 2.2): exec_user_time, exec_system_time, exec_reads, exec_writes
 *
 * These column names are shared between the pg_stat_kcache VIEW and
 * the pg_stat_kcache() FUNCTION. The VIEW also has _blks variants,
 * but the byte-based names work for both contexts.
 */
export interface KcacheColumns {
    userTime: string;
    systemTime: string;
    reads: string;
    writes: string;
    minflts: string;
    majflts: string;
}
export declare function getKcacheColumnNames(adapter: PostgresAdapter): Promise<KcacheColumns>;
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