/**
 * SQL Mode 2 — Executor
 *
 * Three-phase execution engine:
 * Phase 1: Parse + Plan (done before executor)
 * Phase 2: Resolve Dependencies (subqueries, CTEs)
 * Phase 3: Build & Execute pipelines
 */
import type { ExecutionPlan, SqlMode2Result, WriteOperation } from './types.js';
import type { OperationReceipt } from '../types.js';
/**
 * Adapter interface for the executor — abstracts away the actual MongoDB calls.
 */
export interface SqlExecutorAdapter {
    aggregate(collection: string, pipeline: Record<string, unknown>[]): Promise<Record<string, unknown>[]>;
    bulkWrite(collection: string, ops: WriteOperation[]): Promise<OperationReceipt>;
    /** Mutable — set by executor after INSERT to scope last insert ID per instance. */
    lastInsertId?: string;
    /** Guardrail config — passed from StrictDB instance */
    guardrails?: {
        limitRequired: boolean;
        emptyFilter: boolean;
        nullComparison: boolean;
    };
}
/** Get the last inserted ID for the given adapter (for LAST_INSERT_ID() function). */
export declare function getLastInsertId(adapter: SqlExecutorAdapter): string | undefined;
/**
 * Execute a plan against a database adapter.
 */
export declare function executePlan(plan: ExecutionPlan, adapter: SqlExecutorAdapter, explain?: boolean): Promise<SqlMode2Result>;
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