import { AnyObject, Model } from '@loopback/repository';
import { ColumnMap } from '../../types';
import { SearchQueryBuilder } from '../base';
export declare class PsqlQueryBuilder<T extends Model> extends SearchQueryBuilder<T> {
    unionString: string;
    schema: string;
    _placeholderIndex: number;
    search(model: typeof Model, columns: Array<keyof T> | ColumnMap<T>, ignoreColumns: (keyof T)[]): void;
    paramString(index: number): string;
    paramsBuild(param: string): AnyObject | Array<AnyObject | string>;
    getModelName(model: typeof Model): any;
    getSchemaName(model: typeof Model): string;
    _formatAndSanitize(param: string): string;
}