How to union all two tables in CosmosDB?

Xu, Kyson K 151 Reputation points

How to union all two tables in Cosmos DB? Thanks

Azure Cosmos DB
Azure Cosmos DB
An Azure NoSQL database service for app development.
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  1. Dillon Silzer 54,466 Reputation points


    I am just checking to clarify if you are actually speaking about Cosmos DB or not. Cosmos DB isn't typically utilized for traditional structured table-to-table calls. Instead, it usually should be handling semi-structured or unstructured data.

    However, if you're looking to merge data from different collections within Cosmos DB, you can certainly achieve that with your preferred programming language. Here's a Python script demonstrating how to do it:

    Code generated by ChatGPT:

    from azure.cosmos import CosmosClient
    # Initialize Cosmos DB client
    endpoint = "your_cosmosdb_endpoint_uri"
    key = "your_cosmosdb_primary_key"
    client = CosmosClient(endpoint, key)
    # Get database and containers
    database_id = 'your_database_id'
    container1_id = 'collection1_id'
    container2_id = 'collection2_id'
    database = client.get_database_client(database_id)
    container1 = database.get_container_client(container1_id)
    container2 = database.get_container_client(container2_id)
    # Define SQL queries
    query1 = 'SELECT * FROM c'
    query2 = 'SELECT * FROM c'
    # Query data from containers
    items1 = list(container1.query_items(query1, enable_cross_partition_query=True))
    items2 = list(container2.query_items(query2, enable_cross_partition_query=True))
    # Merge results
    merged_items = items1 + items2
    # Display merged items
    for item in merged_items:

    If this is helpful please accept answer.

    1 person found this answer helpful.

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