I showed you how to do this on your earlier question. You need to include the WHERE clause from that solution i.e.
INSERT INTO OpenOrder
LEFT OUTER JOIN OpenOrder OpenOrder ON OpenOrder.Symbol=OpenOrderTemp.Symbol
WHERE OpenOrder.Symbol IS NULL
Without that clause you are attempting to insert keys 1 and 2 - but they already existing in OpenOrder.
Please take care to read solutions carefully and understand what is happening with your code, you cannot just pick and choose which lines of the advice to follow and expect everything to still work.