/**
 * SQL Filter Translation — MongoDB-style filters → parameterized SQL WHERE clauses
 */
import type { SqlDialect, SqlTranslation, UpdateOperators } from '../types.js';
/**
 * Translate a MongoDB-style filter to a parameterized SQL WHERE clause.
 * Returns { clause, values } where clause uses $1, $2, ... placeholders.
 */
export declare function translateToSQL(filter: Record<string, unknown>, dialect?: SqlDialect, startIdx?: number): SqlTranslation;
export declare function translateSortToSQL(sort: Record<string, unknown>): string;
export interface SqlUpdateTranslation {
    setClauses: string;
    values: unknown[];
}
export declare function translateUpdateToSQL(update: UpdateOperators<Record<string, unknown>>, dialect?: SqlDialect, startIdx?: number): SqlUpdateTranslation;
export declare function translateProjectionToSQL(projection: Record<string, 0 | 1>): string;
/**
 * Returns an array of field names to exclude when projection is exclusion-only
 * (e.g. { password: 0 }), or null if the projection is inclusion-based or empty.
 */
export declare function getExcludedFields(projection: Record<string, 0 | 1>): string[] | null;
export declare function quoteIdentifier(name: string): string;
export declare function placeholder(dialect: SqlDialect, idx: number): string;
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