{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "UpdateItemInput",
  "type": "object",
  "properties": {
    "TableName": {
      "type": "string",
      "description": "The name of the table containing the item to update"
    },
    "Key": {
      "type": "object",
      "description": "The primary key of the item to update"
    },
    "UpdateExpression": {
      "type": "string",
      "description": "An expression that defines one or more attributes to be updated, the action to be performed on them, and new values for them"
    },
    "ConditionExpression": {
      "type": "string",
      "description": "A condition that must be satisfied for the update to succeed"
    },
    "ExpressionAttributeNames": {
      "type": "object"
    },
    "ExpressionAttributeValues": {
      "type": "object"
    },
    "ReturnValues": {
      "type": "string",
      "description": "Whether to return the item attributes as they appeared before or after the update"
    },
    "ReturnConsumedCapacity": {
      "type": "string"
    },
    "ReturnItemCollectionMetrics": {
      "type": "string"
    }
  }
}