Error: dynamodb list_append returns true but does not work
What's Causing This Error
This is not exactly an error but can likely be caused due to a programmer-introduced bug. The list_append()
function accepts two parameters: the initial list and the value to append.
If you provide an empty array to append to it, the function will still execute successfully, but nothing will change in the database, which might make you feel like the function does not work.
Solution: Here's How To Resolve It
To resolve the error, carefully provide the arguments for the function as shown below:
const params = { TableName: 'test-table', UpdateExpression: 'SET users = list_append(:users, newUser)'. ExpressionAttributeValues: { // append an array, as DynamoDB will join the arrays while it saves. newUser: [{name: 'Jake'}] } }
Other Common DynamoDB Errors (with Solutions)
- name key is not defined dynamodb
- dynamodb put item not working
- dynamodb mapper save not persisting
- ImportError: No module named boto3 (DynamoDB)
- missing required key 'key' in params dynamodb
- dynamodb exclusivestartkey not working
- dynamodb request is missing authentication token
- dynamodb query is null
- One or more parameter values were invalid: some AttributeDefinitions are not used
- DynamoDB attribute not empty
- DynamoDB string set cannot be empty
- dynamodb no range key value present
- error dynamodb streams must be enabled on the table
- dynamodb local unable to open database file
Tired of AWS Console? Try Dynobase.
Try 7-day free trial. No credit card needed.
Product Features
DynamoDB Tools
DynamoDB Info
© 2023 Dynobase