7/22/2019 TRUNC Function (With Dates)

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Oracle/PLSQL: TRUNC Function (with dates)

In Oracle/PLSQL, the TRUNC functionreturns a date truncated to a specific unit of measure.

Syntax

The syntax for the TRUNC functionis:

TRUNC ( date, [ format ] )

dateis the date to truncate.

formatis the unit of measure to apply for truncating. If the formatparameter is omitted, the TRUNC functionwilltruncate the date to the day value, so that any hours, minutes, or seconds will be truncated off.

Below are the valid format parameters:

Unit Valid format parameters

Year SYYYY, YYYY, YEAR, SYEAR, YYY, YY, Y

ISO Year IYYY, IY, I

Quarter Q

Month MONTH, MON, MM, RM

Week WW

IW IW

W W

Day DDD, DD, J

Start day of the week DAY, DY, D

Hour HH, HH12, HH24

Minute MI

Applies To

Oracle 12c, Oracle 11g, Oracle 10g, Oracle 9i, Oracle 8i

For Example

The TRUNC functioncan be used in Oracle/PLSQL. For example:

TRUNC(TO_DATE('22-AUG-03'), 'YEAR') would return '01-JAN-03'

TRUNC(TO_DATE('22-AUG-03'), 'Q') would return '01-JUL-03'

TRUNC(TO_DATE('22-AUG-03'), 'MONTH') would return '01-AUG-03'

TRUNC(TO_DATE('22-AUG-03'), 'DDD') would return '22-AUG-03'

TRUNC(TO_DATE('22-AUG-03'), 'DAY') would return '17-AUG-03'