GetItem by date in DynamoDB results in ValidationException

I need a data filtered by date but I am getting an error

Error ValidationException: The provided key element does not match the schema

My table has a primary key (only partition key) of id.

async function fetchDatafromDatabase() {  // get method fetch data from dynamodb
    var date = todayDate();
    var params = {
        TableName: table,
        Key: {
            "date": date
        }
    };

    let queryExecute = new Promise((res, rej) => {
        dynamoDB.get(params, function (err, data) {
            if (err) {
                console.log("Error", err);
                rej(err);
            } else {
                console.log("Success! get method fetch data from dynamodb");
                res(JSON.stringify(data, null, 2));
            }
        });
    });
    const result = await queryExecute;
    console.log(result);
}

4 thoughts on “GetItem by date in DynamoDB results in ValidationException”

  1. For getting an item from DynamoDB, we must pass primary key, in this case, its just partition key ‘id’ (assuming it is numeric and storing epoc date)

    var documentClient = new AWS.DynamoDB.DocumentClient();
    var date = Date.now();
    console.log("date", date);
    var params = {
      TableName: "test2",
      Key: {
        id: date,
      },
    };
    documentClient.get(params, function (err, data) {
      if (err) {
        console.log("Error", err);
      } else {
        console.log("Success", data);
      }
    });
    

    Complete Example to put an item and get it.

    var documentClient = new AWS.DynamoDB.DocumentClient();
    var date = Date.now();
    documentClient.put(
      {
        TableName: "test2",
        Key: {
          id: date,
        },
      },
      function (err, data) {
        if (err) console.log("err", err);
        if (data) {
          documentClient.get(
            {
              TableName: "test2",
              Key: {
                id: date,
              },
            },
            function (errGet, dataGet) {
              if (errGet) {
                console.log("Error", errGet);
              } else {
                console.log("Success", dataGet);
              }
            }
          );
        }
      }
    );
    
    Reply

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