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Well when i run below mentioned query in sql editor it shows desired results as shown in attached screen shot, but when i modify the single column and row result and commit the changes, the net beans SQL editor updates all the row in the offers table instead of just updating the record with id = 123465 "select url from db_main.offers WHERE id = '123465'"
Created attachment 100910 [details] SQL BUG SCREEN SHOT
It works correctly, Data Grid editor modifies only one record, not more. Probably your change broke any other rule your table (primary key, unique index).