Error: amazon dynamodb query parentparams is not defined

What's Causing This Error

This error may occur due to multiple developers introducing bugs. For example, you may get this error if the object variable (parentparams) you refer to in the query() method has not been defined.

// where is parent params defined? if its missing, you will get the "not defined" error
await documentClient.query(parentparams).promise();

Solution: Here's How To Resolve It

To resolve the error, define a constant variable named parentparam of type object that you can use to declare the query parameters.

// define the parent params object
const parentparams = {
  ExpressionAttributeValues: {
      ':s': 2,
      ':e': 9,
      ':topic': 'PHRASE'
  KeyConditionExpression: 'Season = :s and Episode > :e',
  FilterExpression: 'contains (Subtitle, :topic)',

// parentparams is defined this time, no error
await documentClient.query(parentparams).promise();

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