如何使用数组在FilterExpression中使用“ IN”语句-dynamodb

请参考这个答案

摘要：-

对于“ IN”子句中的固定数量的值：

var params = {    TableName : "Users",    Filterexpression : "username IN (:user1, :user2)",    expressionAttributevalues : {        ":user1" : "john",        ":user2" : "mike"    }};

对于数组中的更多元素并动态形成Filterexpression：-

var titlevalues = ["The Big New Movie 2012", "The Big New Movie"];var titleObject = {};var index = 0;titlevalues.forEach(function(value) {    index++;    var titleKey = ":titlevalue"+index;    titleObject[titleKey.toString()] = value;});var params = {    TableName : "Movies",    Filterexpression : "title IN ("+Object.keys(titleObject).toString()+ ")",    expressionAttributevalues : titleObject};