Date Truncate Function

The date_trunc function supports the given below units. The examples in the table use timestamp 2000-08-05T09:05:10 as an input.

unit	Truncated example value
second	2000-08-05T09:05:10
minute	2000-08-05T09:05:00
hour	2000-08-05T09:00:00
day	2000-08-05T00:00:00
week	2000-07-31T00:00:00
month	2000-08-01T00:00:00
quarter	2000-07-01T00:00:00
year	2000-01-01T00:00:00

DATE_TRUNC( unit, <datetime_expr> )

Returns the input expression truncated to a given unit (refer above table).

Supported datatype : Date/Timestamp

 > select date_trunc('year' , '2022-03-23');
 2022-01-01T00:00:00.000+00:00

TRUNC( <datetime_expr>, unit )

Returns the input expression truncated to a given unit (refer above table).

Supported datatype : Date/Timestamp

 > select trunc(date '2022-09-03', 'month');
 2022-09-01T00:00:00.000+00:00

 > select trunc(timestamp '2022-09-03 12:04:08' , 'hour');
 2022-09-03T12:00:00.000+00:00