import type { PoolClient, QueryResultRow } from 'pg';
interface ChunkedQueryOptions {
    chunkSize?: number;
    onProgress?: (processed: number, total: number) => void;
}
/**
 * Process database records in chunks to avoid memory issues with large datasets
 */
export declare function processInChunks<T extends QueryResultRow = QueryResultRow>(client: PoolClient, query: string, processor: (rows: T[]) => Promise<void>, options?: ChunkedQueryOptions): Promise<void>;
/**
 * Update records in chunks with a transformer function
 */
export declare function updateInChunks<T extends QueryResultRow & {
    id: string;
}>(client: PoolClient, tableName: string, selectQuery: string, transformer: (row: T) => Promise<Partial<T> | null>, options?: ChunkedQueryOptions): Promise<number>;
export {};
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