import { ExpressionToken, ExpressionTokenKey } from './expression-token';
export interface RawExpressionToken extends ExpressionToken {
    riao_expr: ExpressionTokenKey.RAW;
    sql: string;
    params?: any[];
}
export declare function isRawExprToken(token: ExpressionToken): boolean;
export declare function raw(sql: string, params?: any[]): RawExpressionToken;