Question

我们如何使用两个参数从dynomodb获得结果？我正在使用下面的代码，这是行不通的。

        var _request = new QueryRequest
        {
            TableName = "Attendence",
            KeyConditionExpression = "Roster_EmpID = :Roster_EmpID and Roster_CreatedDateTime between :v_start and :v_end",
            ExpressionAttributeValues = new Dictionary<string, AttributeValue> {
                {":Roster_EmpID", new AttributeValue {  S = result.empId    }}
                ,{":v_start", new AttributeValue {   S = result.fromDate.ToString(AWSSDKUtils.ISO8601DateFormat)  }}
                ,{":v_end", new AttributeValue { S = result.toDate.ToString(AWSSDKUtils.ISO8601DateFormat)    }}
            },
            IndexName = "Roster_EmpID-index"
        }; 
        var _response = await _client.QueryAsync(_request);

但是它没有返回结果，请帮助我获得结果。我已经浪费了2天，仍然找不到答案。

Answer 1

我认为您可能正在寻找FilterExpression

KeyConditionExpression = "Roster_EmpID = :Roster_EmpID ",
FilterExpression = "Roster_CreatedDateTime between :v_start and :v_end",

AWS-DynomoDB两个参数，用于使用c＃过滤结果

1 个答案: