import { IS_EMPTY, Fragment } from "./util";
export declare type Expr = Bool | Cmp;
export declare type Field = string | Fn;
export declare type Scalar = bigint | boolean | null | number | string;
export declare class Bool implements Fragment {
    private readonly operator;
    private readonly value;
    private constructor();
    static and(...value: Expr[]): Bool;
    static or(...value: Expr[]): Bool;
    [IS_EMPTY](): boolean;
    toString(): string;
}
export declare class Cmp implements Fragment {
    private readonly field;
    private readonly operator;
    private readonly expression;
    private constructor();
    static eq(field: Field, expression: Scalar): Cmp;
    static gt(field: Field, expression: Scalar): Cmp;
    static gte(field: Field, expression: Scalar): Cmp;
    static in(field: Field, expression: Scalar[]): Cmp;
    static like(field: Field, expression: string): Cmp;
    static lt(field: Field, expression: Scalar): Cmp;
    static lte(field: Field, expression: Scalar): Cmp;
    static ne(field: Field, expression: Scalar): Cmp;
    static notIn(field: Field, expression: Scalar[]): Cmp;
    [IS_EMPTY](): boolean;
    toString(): string;
}
export declare class Fn implements Fragment {
    private readonly ident;
    private readonly field?;
    private constructor();
    static avg(field: string): Fn;
    static calendarMonth(field: string): Fn;
    static calendarQuarter(field: string): Fn;
    static calendarYear(field: string): Fn;
    static convertTimezone(field: string): Fn;
    static count(field?: string): Fn;
    static countDistinct(field?: string): Fn;
    static dayInMonth(field: string): Fn;
    static dayInWeek(field: string): Fn;
    static dayInYear(field: string): Fn;
    static dayOnly(field: string): Fn;
    static fiscalMonth(field: string): Fn;
    static fiscalQuarter(field: string): Fn;
    static fiscalYear(field: string): Fn;
    static hourInDay(field: string): Fn;
    static max(field: string): Fn;
    static min(field: string): Fn;
    static sum(field: string): Fn;
    static weekInMonth(field: string): Fn;
    static weekInYear(field: string): Fn;
    [IS_EMPTY](): boolean;
    toString(): string;
}