Technical Article

Unused Indexes

This script will provide a list of indexes that are not used in a database. Indexes are overhead and any indexes not being used but are being updated cause additional load on a database. This looks at the following  items: User seeks, scans and lookups. If all three of these are zero and the User […]

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2020-04-21 (first published: )

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Technical Article

Missing index script

This script on missing indexes that SQL had found. SQL will track queries and provide suggestions on indexes it feels will provide improvements. You should not take this information and create all the indexes. Performance tuning can be an art and takes practice. This information should be reviewed and as a DBA implemented a little […]

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2020-04-20 (first published: )

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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;

See possible answers