Function dateTrunc

dateTrunc(a0: Text<0 | 1>, a1: Interval<0 | 1>): Interval<0 | 1>

dateTrunc(a0: Text<0 | 1>, a1: Timestamp<0 | 1>): Timestamp<0 | 1>

dateTrunc(a0: Text<0 | 1>, a1: Timestamptz<0 | 1>): Timestamptz<0 | 1>

dateTrunc(
    a0: Text<0 | 1>,
    a1: Timestamptz<0 | 1>,
    a2: Text<0 | 1>,
): Timestamptz<0 | 1>