What is a distributed table? A distributed table appears as a single table, but the rows are actually stored across 60 distributions. The rows are distributed with a hash or round-robin algorithm. Hash-distribution improves query performance on large fact tables, and is the focus of this article.

Sep 17, 2019 · Data is distributed between nodes using either hash-distribution or round-robin tables. Data can also be replicated to all nodes using replicated tables. Understanding and planning where the...

Apr 19, 2019 · This article aims to describe some of the data design and data workload management features of Azure SQL Data Warehouse. I’ll go over practical examples of when and how to use hash versus round robin distributed tables, how to partition swap, how to build replicated tables, and lastly how to manage workloads in Azure SQL Data Warehouse.

Apr 5, 2017 · The distribution clause defines how the data will be stored across the distribution in the Azure SQL Data Warehouse and there are two options: DISTRIBUTION = ROUND_ROBIN | HASH(...

Mar 7, 2019 · What is the best indexing and distribution to migrate those tables to SQL Azure Data Warehouse? We are thinking about using CLUSTERED INDEX (DimensionID1, DimensionID2, DimensionID3 and DimensionID4) for the index and hash distribution using the TimeDimensionID field.

There are two choices for distributing data in SQL Data Warehouse: Distribute data evenly but randomly; Distribute data based on hashing values from a single column; Data distribution is decided at the table level. All tables are distributed. You will assign distribution for each table in your SQL Data Warehouse database.

Dec 19, 2023 · When preparing for my Microsoft Azure Data Engineer Associate DP-203 certificate, I went deeper into the design choices for production tables in Azure Dedicated SQL Pool, formerly Azure...

Dedicated SQL pool supports three methods for distributing data: round-robin (default), hash and replicated. A hash distributed table distributes rows based on the value in the distribution column. A hash distributed table is designed to achieve high performance for queries on large tables.

Jan 19, 2022 · Dedicated SQL Pools (formerly Azure SQL Data Warehouse) are a massively parallel processing (MPP) implementation of Microsoft SQL built exclusively for analytical workloads (i.e. data warehousing). Under the hood, Dedicated SQL Pools have many separate CPUs that can operate on their distribution of data in parallel.

For SQL Server and Azure SQL platforms, visit CREATE TABLE and select your desired product version. For SQL database in Microsoft Fabric, see CREATE TABLE. For reference to Warehouse in Microsoft Fabric, visit CREATE TABLE (Fabric).