One PO created with different validity dates
PO Created on 01/04/11with PB00 Condition - Rate 100
PO Amended on 01/05/11 with PB00 & FRC1 Rate 120 & 3 Rs condition
PO Amended on 01/06/11 with PB00 & FRC1 & Rate 150 & 4 Rs condition.
I wanted to find all these records from Table.