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F_DAYOFMONTH

compatibility to FreeUDFLib, FreeUDFLibC, FreeUDFLib AvERP, GrUDF

input/output-compatibility to rFunc (EXTRACTDAY)

Entrypoint dayofmonth compatible with UTF-8

Inputs/Outputs

   Input      TIMESTAMP     date optionally time 
   Output     INTEGER       day of the month

Syntax

   Counting starts with 1
   TestSQL
   SELECT 23 AS ISCORRECT, F_DAYOFMONTH('23.08.2004') FROM RDB$DATABASE;
   SELECT NULL AS ISCORRECT, F_DAYOFMONTH(NULL) FROM RDB$DATABASE;