import { Data } from "../core/base";
export declare function getDataToReturn(data: Data, colNames?: Set<string>, returningAll?: boolean): Data;
export interface Where {
    apply(data: Data): boolean;
}
export declare class EqOp {
    private col;
    private value;
    constructor(col: string, value: any);
    apply(data: Data): boolean;
}
export declare class GreaterOp {
    private col;
    private value;
    constructor(col: string, value: any);
    apply(data: Data): boolean;
}
export declare class LessOp {
    private col;
    private value;
    constructor(col: string, value: any);
    apply(data: Data): boolean;
}
export declare class GreaterEqOp {
    private col;
    private value;
    constructor(col: string, value: any);
    apply(data: Data): boolean;
}
export declare class LessEqOp {
    private col;
    private value;
    constructor(col: string, value: any);
    apply(data: Data): boolean;
}
export declare class InOp {
    private col;
    private values;
    constructor(col: string, values: any[]);
    apply(data: Data): boolean;
}
export declare class AndOp {
    private ops;
    constructor(ops: Where[]);
    apply(data: Data): boolean;
}
export declare class OrOp {
    private ops;
    constructor(ops: Where[]);
    apply(data: Data): boolean;
}
export interface queryResult {
    rows: Data[];
    rowCount: number;
    oid: number;
    fields: any[];
    command: string;
}
export declare function performQuery(query: string, values: any[], map: Map<string, Data[]>): queryResult | undefined;