Question

我遇到linq查询问题。我正在加入两个表，但where子句被完全忽略了。

using (var db = new Context())
{
    var count = (from c in db.PERSON
                 join dt in db.DATA_INPUT_CHANGE_LOG
                      on c.DataInputTypeId equals dt.DataInputTypeId
                 join x in db.DATA_INPUT_CHANGE_LOG 
                      on c.Id equals x.DataItemId
                 where c.PersonId == p1Id &&
                  c.RefPersonId == p2Id && 
                  c.RelationshipId == rId
                 where x.Approved
                 where x.Checked
                 where x.Hidden == false
                 select c).Count();

    return count > 0;
}

在此特定查询中，x.Approved，x.Checked和x.Hidden == false where子句将被完全忽略。

有人能指出我正确的方向吗？

Answer 1

您的语法不正确。你应该只有一个where子句。见下文：

            var count = (from c in db.PERSON
                         join dt in db.DATA_INPUT_CHANGE_LOG
                              on c.DataInputTypeId equals dt.DataInputTypeId
                         join x in db.DATA_INPUT_CHANGE_LOG
                              on c.Id equals x.DataItemId
                         where c.PersonId == p1Id &&
                          c.RefPersonId == p2Id &&
                          c.RelationshipId == rId &&
                          x.Approved &&
                          x.Checked &&
                          x.Hidden == false
                         select c).Count();

            return count > 0;

LINQ where子句被忽略

1 个答案: