|Oracle® OLAP DML Reference
11g Release 1 (11.1)
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The DDOF function returns an
INTEGER in the range of 1 through 31, giving the day of the month on which a specified date falls. The result returned by DDOF has the same dimensions as the specified DATE expression.
An expression that has the DATE data type, or a text expression that specifies a date. See "Date-only Input Values" for valid formats for a text expression.