required to get the records for last 6 months - response (7) by peiter65

its is having long structure.
i will summeries it.
1 table name with opportunity with opportunity_id column,expected_amount column.
another table with name sales with opportunity_id and order_date column.

so what we want is this "sum of expectedAmount amounts measured for wich the expectedOrderDate is in last 6  months.
the expected amount is coming from another table and order_date is coming from another table.

does it make sense????