yearBegin

swordfish.function.yearBegin()

Return the first day of the year that X belongs to and that starts in the month of startingMonth. If parameter offset is specified, the result is updated every n years. The parameters offset and n must be specified together, and offset takes effect only when n > 1.

参数:

• X (Constant) -- A scalar/vector of data type DATE, DATEHOUR, DATETIME, TIMESTAMP or NANOTIMESTAMP.

• endingMonth (Constant, optional) -- An integer between 1 and 12 indicating a month, by default DFLT.

• offset (Constant, optional) -- A scalar of the same data type as X, by default DFLT. It must be no greater than the minimum value of X.

• n (Constant, optional) -- A positive integer, by default DFLT