import { DataService } from './data.service';
export declare class DataController {
    private dataService;
    constructor(dataService: DataService);
    execute(body: {
        sql: string;
    }): Promise<{
        success: boolean;
    } | {
        success: boolean;
        error: string;
    }>;
    query(body: {
        sql: string;
    }): Promise<{
        success: boolean;
        error: string;
        data?: undefined;
    } | {
        data: unknown[];
        success?: undefined;
        error?: undefined;
    }>;
}