Query.Close;
Query.SQL.Clear;
Query.SQL.Add('select * from [E:/Project].Source as a where not exist (select * from [E:/Project].Target as b where a.id=b.id)');
Query.ExecSQL;
Query.Open;
Error:
Field"E:/Project].Source" is an unknown type
或者
Invalid use of keyword.
Token: [E?
Line Number 1