Multi-Column Distribution for Dedicated SQL Pools Is Now GA!
Microsoft is excited to announce the General Availability (GA) of multi-column distribution for Azure Synapse Analytics dedicated SQL pools. Multi-column distribution supports up to five columns in the distribution key and is based on the latest version of the Apache Spark engine.
What is Multi-Column Distribution?
Multi-column distribution is a way of distributing data across multiple nodes in a distributed system. It uses multiple columns in the distribution key to spread the data more evenly and efficiently across nodes. This can improve query performance by reducing the amount of data that needs to be moved across the network.
Benefits of Multi-Column Distribution
The multi-column distribution feature in Azure Synapse Analytics dedicated SQL pools provides several benefits. It can improve query performance by reducing the amount of data that needs to be moved across the network. It also enables users to perform more complex queries that involve multiple columns in the distribution key, such as joins and aggregations.
How to Use Multi-Column Distribution
Multi-column distribution can be enabled on an existing or new dedicated SQL pool. When creating or updating an existing pool, users can specify up to five columns in the distribution key. This can be done through the Azure Portal, PowerShell, CLI, or REST API.
Conclusion
Multi-column distribution for Azure Synapse Analytics dedicated SQL pools is now generally available. This feature can improve query performance by reducing the amount of data that needs to be moved across the network. It also enables users to perform more complex queries that involve multiple columns in the distribution key.
References:
Multi-Column Distribution for Dedicated SQL pools is now GA!
1. Multi-Column Distribution
2. Dedicated SQL pools
3. Microsoft
