Error: dynamodb list_append if_not_exists not working
What's Causing This Error
This is a generic error you may encounter when using the
if_not_exists update expression functions. This error mainly occurs when you try to execute these two functions on child attributes where the parent does not exist.
const expression = SET #parent.#child = list_appends(if_not_exists(#parent.child,:emptyArray),:add))
The snippet below shows that a list item is appended to a property named
child in the
However, if the
parent attribute does not exist when this expression gets executed, DynamoDB will throw an error.
Solution: Here's How To Resolve It
To resolve the error, ensure that the parent (top level) attribute exists in the item before managing a child attribute.
// ensure that the item has an attribute named parent #parent.#child
Other Common DynamoDB Errors (with Solutions)
- DynamoDB local error unable to access JAR file dynamodblocal.jar
- KMS Key Access Denied Error DynamoDB
- could not load profile default dynamodb
- Unable to start DynamoDB Local process
- One or more parameter values were invalid: some AttributeDefinitions are not used
- dynamodb autoscaling not fast enough
- DynamoDB ConditionalCheckFailedException
- accessdeniedexception dynamodb
- dynamodb botocore.exceptions.nocredentialserror unable to locate credentials
- dynamodb does not accept empty set
- dynamodb query not returning the full item
- dynamodb map template foreach not working
- DynamoDB Error Message KeyError item is not JSON serializable
- DynamoDB error cannot find module build/Release/DTraceProviderBindings
- dynamodb 1 validation error detected value
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