import { Bool, Cmp, Field } from "./expr";
import { IS_EMPTY, Fragment } from "./util";
export declare type Direction = "ASC" | "DESC";
export declare class GroupBy implements Fragment {
    private readonly fields;
    private readonly having?;
    constructor(fields?: Field[], having?: Bool | Cmp | undefined);
    [IS_EMPTY](): boolean;
    toString(): string;
}
export declare class Limit implements Fragment {
    private readonly size?;
    constructor(size?: bigint | number);
    [IS_EMPTY](): boolean;
    toString(): string;
}
export declare class Offset implements Fragment {
    private readonly size?;
    constructor(size?: bigint | number);
    [IS_EMPTY](): boolean;
    toString(): string;
}
export declare class OrderBy implements Fragment {
    private readonly fields;
    private readonly direction;
    constructor(fields?: Field[], direction?: Direction);
    [IS_EMPTY](): boolean;
    toString(): string;
}
export declare class Where implements Fragment {
    private readonly condition?;
    constructor(condition?: Bool | Cmp | undefined);
    [IS_EMPTY](): boolean;
    toString(): string;
}