I have database descriptions. in this case i must copy from one row to 2 another. 
Product ID is same for all 3 rows but language Id is deferent. How i can copy field description from row where is Product Id 157 or any another and Language Id is 1 to row where is Product ID 157 (there is lot of diferent IDs) and language id is 7. 

Can someone help me to do for all Product IDs with one sql commands

Thanks a lot.