我有以下内容:
time_range = (1.month.ago.beginning_of_month..1.month.ago.end_of_month)
Comment.where(:created_at => time_range).count
如何使用如下语句添加到where子句:
.where("user_id is not in (?)",[user_ids]).
我如何将两者结合起来?感谢
答案 0 :(得分:65)
如果你想要“AND”条件查询,试试这个:
Comment.
where(:created_at => time_range).
where("user_id is not in (?)",[user_ids])
将产生类似于select ... where ... AND ...
如果您希望WEHRE子句更复杂,例如:where ( a AND b) OR (c AND d)
,您必须自己将条件组合到子句中,例如
Comment.where("(a AND b ) OR (c AND d)")
答案 1 :(得分:17)
User.where(["name = ? and email = ?", "Joe", "joe@example.com"])
这没关系。
答案 2 :(得分:12)
Public Sub DeleteFormQueries()
Dim qdf As Object
For Each qdf In CurrentDb.QueryDefs
If qdf.Name Like "~sq_f*" Then
CurrentDb.QueryDefs.Delete qdf.Name
End If
Next qdf
End Sub