MONTH

The MONTH function returns the month part of a value.

Read syntax diagramSkip visual syntax diagramMONTH (expression)
expression
An expression that returns a value of one of the following built-in data types: a date, a timestamp, a character string, a graphic string, or a numeric data type.
  • If expression is a character or graphic string, its value must be a valid string representation of a date or timestamp. For the valid formats of string representations of dates and timestamps, see String representations of datetime values.
  • If expression is a number, it must be a date duration or timestamp duration. For the valid formats of datetime durations, see Datetime operands and durations.

The result of the function is a large integer. If the argument can be null, the result can be null; if the argument is null, the result is the null value.

The other rules depend on the data type of the argument:

  • If the argument is a date, a timestamp, or a valid character-string representation of a date or timestamp:

    The result is the month part of the value, which is an integer between 1 and 12.

  • If the argument is a date duration or timestamp duration:

    The result is the month part of the value, which is an integer between -99 and 99. A nonzero result has the same sign as the argument.

Example

  • Select all rows from the EMPLOYEE table for people who were born (BIRTHDATE) in DECEMBER. 
      SELECT *
    FROM EMPLOYEE
    WHERE MONTH(BIRTHDATE) = 12