Question

我有这个查询，当我在Sql studio上执行它时我得到了结果：

select TeamName, count(*) 
  from NetHoz_Decision
  inner join NetHoz_Case on NetHoz_Decision.CaseDisplayIdentifier = NetHoz_Case.CaseDisplayIdentifier 
  inner join maintik on MainTik.Counter = NetHoz_Case.TikCounter
  inner join Teams on MainTik.TeamCounter = Teams.Counter
  where NetHoz_Decision.DecisionStatusChangeDate between '2015-07-23' and '2015-07-28'
  group by TeamName

但是当我在C＃SqlCommand上执行它时，我得不到任何结果。 dataSet为空，我没有收到任何错误。我认为问题可能是在日期。我转换它吗？

String date1 = String.Format("{0:yyyy-MM-dd}", dateTimePicker1.Value);
String date2 = String.Format("{0:yyyy-MM-dd}", dateTimePicker2.Value.AddDays(1));

Answer 1

使用SqlCommand和type-safe parameters

const string query = "
select TeamName, count(*) 
 from NetHoz_Decision
 inner join NetHoz_Case on NetHoz_Decision.CaseDisplayIdentifier = NetHoz_Case.CaseDisplayIdentifier 
 inner join maintik on MainTik.Counter = NetHoz_Case.TikCounter
 inner join Teams on MainTik.TeamCounter = Teams.Counter
 where NetHoz_Decision.DecisionStatusChangeDate between @from and @to
 group by TeamName
";

SqlCommand command = new SqlCommand(query);
command.Parameters.AddWithValue("@from", dateTimePicker1.Value);
command.Parameters.AddWithValue("@to", dateTimePicker2.Value.AddDays(1));

在sql studio上运行的查询，但不适用于C＃

1 个答案: