Good Morning Guys

I have a big problem with the year ending process . ie; at the financial year ending time we are planning to create a new database [ in postgresql ] by renaming the old - database .
In the old-database i have a table called tbl_stock_on_hand ,from which we can indentify Each Products Current-Stock .

My problem is to transfere this Current-Stock of Individual Product from Old-Database to the New database as OPENING STOCK to individual items

How it is possible ...........? please help me it's very urgent