oracle 判斷字段是否爲null

 select * from t_botnet where botnet_note_c = nullhtml 沒有返回任何結果。post    select * from t_botnet where botnet_note_c is nullhtm 返回正確結果。blog 轉載於:https://www.cnblogs.com/peterpanzsy/archive/2013/04/09/301

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