DynamoDB FilterExpression具有多个条件javascript

Question

我有一个分区键和排序键的表也有2个其他列.在使用javaScript AWS SDK的DynamoDB中,我无法使用FilterExpression获取包含AND的多个条件的项目.任何人都可以提供正确的代码来检索FilterExpression中具有多个条件的数据吗？我的代码如下:

var params = {
    TableName: 'Department',
    KeyConditionExpression: "#company = :companyId"
    , ExpressionAttributeNames: {
        '#company': 'CompanyID',
        '#dType': 'DepartmentType',
        '#cTime': 'CreatedTime"
    }
    , ExpressionAttributeValues: {
        ':companyId': 'Test',
        ':deptType': dType,
        ':daysPrior': 1250456879634
    },FilterExpression: "#dType = :deptType AND #ts > :daysPrior" 
};

Answer 1

查询格式中存在拼写错误(之​​后CreatedTime)为了保持其清洁,请使用双引号或单引号,但不能同时使用两个引号.我使用双引号,就像aws样本代码那样.

var params = {
    TableName: "Department",
    KeyConditionExpression: "#company = :companyId", 
    ExpressionAttributeNames: {
        "#company": "CompanyID",
        "#dType": "DepartmentType",
        "#cTime": "CreatedTime" //here
    },
    ExpressionAttributeValues: {
        ":companyId": "Test",
        ":deptType": dType,
        ":daysPrior": 1250456879634
    },
    FilterExpression: "#dType = :deptType AND #ts > :daysPrior" 
};