Non Standard SQL in BIP 11g - Dynamic query implementation

SQL query is often used as a data source in BIP and often we have a requirement in which we have to use one table when the user selects a certain value in a parameter and select a totally different table when the user selects another value in the parameter. While we have discussed a method to do this using pipelined functions in http://obiee-oracledb.blogspot.com.au/2011/07/performance-enhancing-drug-called-table.html, this blog post talks about a BIP 11g method of achieving the same result.