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Azure SQL Data Warehouse: Explaining the Architecture Through System Views

The architecture of Azure SQL Data Warehouse isn't easy to explain briefly, but if you have some useful queries that access the management and catalog views, and diagrams that show how they relate together, you can very quickly get a feel for what is going on under the hood. By using and extending these queries that use these views, you can check on a variety waits, blocking, status, table distribution and data movement in ASDW.

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BIT_COUNT I

By Steve Jones - SSC Editor

Comments posted to this topic are about the item BIT_COUNT I

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Question of the Day

BIT_COUNT I

In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:

UserID  UserPermissions
15
23
37
What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount
from dbo.UserPermission
where UserID = 3;

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