update_item

update_item

Updates specific attributes of an item in a table

Input Schema

Name	Required	Description
`conditionExpression`	No	Condition for update (optional)
`expressionAttributeNames`	Yes	Attribute name mappings
`expressionAttributeValues`	Yes	Values for the update expression
`key`	Yes	Primary key of the item to update
`returnValues`	No	What values to return
`tableName`	Yes	Name of the table
`updateExpression`	Yes	Update expression (e.g., 'SET #n = :name')

Input Schema (JSON Schema)

{
  "properties": {
    "conditionExpression": {
      "description": "Condition for update (optional)",
      "type": "string"
    },
    "expressionAttributeNames": {
      "description": "Attribute name mappings",
      "type": "object"
    },
    "expressionAttributeValues": {
      "description": "Values for the update expression",
      "type": "object"
    },
    "key": {
      "description": "Primary key of the item to update",
      "type": "object"
    },
    "returnValues": {
      "description": "What values to return",
      "enum": [
        "NONE",
        "ALL_OLD",
        "UPDATED_OLD",
        "ALL_NEW",
        "UPDATED_NEW"
      ],
      "type": "string"
    },
    "tableName": {
      "description": "Name of the table",
      "type": "string"
    },
    "updateExpression": {
      "description": "Update expression (e.g., 'SET #n = :name')",
      "type": "string"
    }
  },
  "required": [
    "tableName",
    "key",
    "updateExpression",
    "expressionAttributeNames",
    "expressionAttributeValues"
  ],
  "type": "object"
}

Input Schema

Input Schema (JSON Schema)

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