select * from t_botnet where botnet_note_c = nullhtml
没有返回任何结果。post
select * from t_botnet where botnet_note_c is nullhtm
返回正确结果。blog
select * from t_botnet where botnet_note_c = nullhtml
没有返回任何结果。post
select * from t_botnet where botnet_note_c is nullhtm
返回正确结果。blog
转载于:https://www.cnblogs.com/peterpanzsy/archive/2013/04/09/3010170.htmlclass