2023-11-22
456 reads
T-SQL
T-SQL Fundamentals: Controlling Duplicates
When people start learning a new field, for example T-SQL, it’s tempting to spend very little time trying to understand the fundamentals of the field so that you can quickly get to the advanced parts.
2023-11-22
2023-11-20
346 reads
2023-11-15
391 reads
2023-11-13
418 reads
2023-11-10
518 reads
2023-11-08
449 reads
Don’t use DISTINCT as a “join-fixer”
I’ve quietly resolved performance issues by re-writing slow queries to avoid DISTINCT. Often, the DISTINCT is there only to serve as a “join-fixer,” and I can explain what that means using an example.
2023-11-06
2023-11-06
413 reads
2023-11-03
663 reads
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BIT_COUNT I
Comments posted to this topic are about the item BIT_COUNT I
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 37What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount from dbo.UserPermission where UserID = 3;See possible answers