import { BooleanType, DateType, DoubleType, CharacterArg, TimeType, TimestampType, TimestampArg, DoubleArg, IntegerArg, DateArg, IntervalArg, TimeArg, TextType, IntervalType } from '../types';
import { Expression } from '../expressions';
export declare function AGE(a: TimestampArg, b?: TimestampArg): Expression<IntervalType>;
export declare function CLOCK_TIMESTAMP(): Expression<TimestampType>;
export declare function CURRENT_DATE(): Expression<DateType>;
export declare function CURRENT_TIME(precision?: IntegerArg): Expression<TimeType>;
export declare function CURRENT_TIMESTAMP(precision?: IntegerArg): Expression<TimestampType>;
export declare function DATE_PART(a: CharacterArg, b: TimestampArg | IntervalArg): Expression<DoubleType>;
export declare function DATE_TRUNC(a: CharacterArg, b: TimestampArg): Expression<TimestampType>;
export declare function DATE_TRUNC(a: CharacterArg, b: TimestampArg, c: CharacterArg): Expression<TimestampType>;
export declare function DATE_TRUNC(a: CharacterArg, b: IntervalArg): Expression<IntervalType>;
export declare function EXTRACT(field: CharacterArg, from: TimestampArg | IntervalArg): Expression<DoubleType>;
export declare function ISFINITE(date: DateArg | IntervalArg | TimestampArg): Expression<BooleanType>;
export declare function JUSTIFY_DAYS(interval: IntervalArg): Expression<IntervalType>;
export declare function JUSTIFY_HOURS(interval: IntervalArg): Expression<IntervalType>;
export declare function JUSTIFY_INTERVAL(interval: IntervalArg): Expression<IntervalType>;
export declare function LOCALTIME(precision?: IntegerArg): Expression<TimeType>;
export declare function LOCALTIMESTAMP(precision?: IntegerArg): Expression<TimestampType>;
export declare function MAKE_DATE(year: IntegerArg, month: IntegerArg, day: IntegerArg): Expression<DateType>;
interface IntervalMaker {
    years?: IntegerArg;
    months?: IntegerArg;
    weeks?: IntegerArg;
    days?: IntegerArg;
    hours?: IntegerArg;
    mins?: IntegerArg;
    secs?: DoubleArg;
}
export declare function MAKE_INTERVAL(interval: IntervalMaker): Expression<IntervalType>;
export declare function MAKE_TIME(hour: IntegerArg, minute: IntegerArg, second: DoubleArg): Expression<TimeType>;
export declare function MAKE_TIMESTAMP(year: IntegerArg, month: IntegerArg, day: IntegerArg, hour: IntegerArg, minute: IntegerArg, second: DoubleArg): Expression<TimestampType>;
export declare function MAKE_TIMESTAMPTZ(year: IntegerArg, month: IntegerArg, day: IntegerArg, hour: IntegerArg, minute: IntegerArg, second: DoubleArg, timezone?: CharacterArg): Expression<TimestampType>;
export declare function NOW(): Expression<TimestampType>;
export declare function STATEMENT_TIMESTAMP(): Expression<TimestampType>;
export declare function TIMEOFDAY(): Expression<TextType>;
export declare function TRANSACTION_TIMESTAMP(): Expression<TimestampType>;
export declare function OVERLAPS<T extends DateArg | TimeArg | TimestampArg>(start1: T, end1: T | IntervalArg, start2: T, end2: T | IntervalArg): Expression<BooleanType>;
export declare function TO_TIMESTAMP(a: DoubleArg): Expression<TimestampType>;
export declare function TO_TIMESTAMP(date: CharacterArg, to: CharacterArg): Expression<TimestampType>;
export declare function TO_DATE(date: CharacterArg, to: CharacterArg): Expression<DateType>;
export {};