hi all, In excel sheet my source data is in the following format --------------A--------B-----C-----D---- ======================== |Headers----------> Cust1 Cust2 Cust3 | |Row 1--->month01 01d1 01d2 01d3 |Row 2--->month02 02d1 NULL 02d3 |Row 3--->month03 03d1 03d2 NULL |Row 4--->month04 04d1 04d2 04...