SQL - Scalar functions - MONTH


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Desenvolvido por DORNELLES Carlos Alberto - Analista de Sistemas - Brasília DF. - cad_cobol@hotmail.com

MONTH

The MONTH function returns the month part of a value.

MONTH(expression)

The schema is SYSIBM.

expression
An expression that returns a value of one of the following built-in data types:
DATE, TIMESTAMP, date duration, timestamp duration, or a valid character string representation of a date or timestamp that is not a CLOB.
In a Unicode database, if a supplied argument is a graphic string (except DBCLOB), it is first converted to a character string before the function is executed.

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, TIMESTAMP, or a valid 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

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