node.js - How to query dynamoDB table by name using AWS Lambda -

i have dynamodb table,

table name xx

primary partition key id (number)

primary sort key name (string)

and want query name.

'use strict'; const aws = require("aws-sdk"); const dynamodb = new aws.dynamodb(); const docclient = new aws.dynamodb.documentclient();  exports.handler = function(event, ctx, callback) {      var params = {           tablename: 'xx',              keyconditionexpression: "#name = :name",                  expressionattributenames:{             "#name": "name"         },                      expressionattributevalues: {             ":name":event.name         }     };      docclient.query(params, function(err, data){         if(err){             callback(err, null);         }else{             callback(null, data);         }     }); } 

but got error called :"query condition missed key schema element:id:" how deal that?

it sounds id primary key of table. either need include id in key condition, or scan instead of query.