---
title: "Update Items"
url: https://docs.catalyst.zoho.com/en/sdk/python/v1/cloud-scale/nosql/update-items/
description: "Catalyst NoSQL is a fully-managed, powerful database that provides you with a non-relational, non-SQL means of data storage. This page describes the SDK method to update items in a NoSQL table."
last_updated: 2025-09-24T13:16:10Z
service: Cloud Scale
type: general
---

# Update NoSQL Items in Table

Catalyst enables you to update items in a specific [NoSQL](https://docs.catalyst.zoho.com/en/cloud-scale/help/nosql/introduction/) table after you construct them. An item can be updated by identifying it using its [primary keys](https://docs.catalyst.zoho.com/en/cloud-scale/help/nosql/components/#table-keys). For instance, you can use just the partition key or a combination of the partition key and sort key to identify the item. 

You can then define the update operation type with the appropriate HTTP request method and provide the attributes and values to be updated in the item. 

> **Note:** Catalyst enables you to update a maximum of 25 items in bulk in a NoSQL table with a single SDK operation.

The example below illustrates this by retrieving an item with the partition key `fruitName` and the sort key `location`. The attributes of this item to be updated are `color` and `taste`. The values for all these attributes are provided. 

You can also optionally define a condition for update. The update will occur only if the condition is met. 

```python
# Update a NoSQL item by identifying it with its primary keys
res = table.update_items({
 	"keys": {
 		"fruitName": {
			 "S": "Banana"
 			},
 		"location": {
			 "S": "Indonesia"
 			}
 		},# Define the attributes to be updated in the item
	"update_attributes": [
 		{
 		"operation_type": "PUT",
 		"color": {
 			"S": "Yellow"
 			},
		"taste": {
    "S": "Sweet"
      },
 	"attribute_path": "fruitProperties"
 		}
 	],# Define a condition. The item will be updated only if this is satisfied. (optional)
 	"condition" : {
 		"function": {
 			"function_name": "attribute_exists",
 			"args": [
				 {
 			"attribute_path": "fruitProperties"
 				}
 		]
 	}
}
})
print(res)
```