The following solution allows users to create a report giving them data for the current month and pevious months without creating transformations. The follow implementation uses the system date to qualify on the current and previous months for data models using the month dimension format of 'YYYYMM'.

NOTE:
The ApplySimple statements given above are ORACLE Specific. The same logical should apply for other databases, but the syntax will need to be changed. Refer to Strategy Knowledge Base document KB5700-007-0107 for more details on writing custom expressions.