如何使用LINQ检查值重叠

Question

如何避免C＃实体框架中的范围重叠

select * from globalsettings 
where minvalue between 3 and 6 OR maxvalue between 3 and 6

Answer 1

int checkRange = (from globalSetting in db.GlobalSetting
                  where ((globalSetting.MinValue >= minValue 
                          && globalSetting.MinValue <= maxValue) 
                          || (globalSetting.MaxValue >= minValue 
                                && globalSetting.MaxValue <= maxValue))
                  select globalSetting)
                  .Count();

Answer 2

接受的答案肯定很有效，但我想我会指出另一种方法，只是为了好奇，因为你提到你正在使用实体框架。 您可以使用ObjectQuery：

var vals = db.GlobalSetting.Where("(minvalue between 3 and 6) or (maxvalue between 3 and 6)");
//if you just want the count of these:
int checkRange = vals.Count();