Changing jobs -- Pros and Cons
I read Andy's post Changing Jobs - Should You? today with great interest. I think it is good topic in the...
2008-08-08
1,310 reads
Jeffrey Yao
Cold backup and remote control of sql server services
I recently got a request to do a "cold" backup of a small yet complex db environment, I say "small" because...
2008-08-02
720 reads
Replication Error "memory mapped file read failed"
I was fighting an error that was very rare to appear. I originally put a post on a MS forum
http://www.microsoft.com/communities/newsgroups/en-us/default.aspx?dg=microsoft.public.sqlserver.replication&tid=57229124-0a5a-4ec3-9055-a06b7869b872&cat=&lang=&cr=&sloc=&p=1
The...
2008-07-02
4,448 reads
Replication Error "field size too large"
Yesterday, I was fighting with an error I have never seen in the replication and not much info can be obtained via...
2008-06-03
16,256 reads
From DBA to DBAA
Most of us DBAs have worked on our career to get where we are. A DBA is usually a second or third step in IT and we we've looked to advance our understanding of technology. Jeffrey Yao now brings us a new level of database work to which we may aspire.
2008-05-09 (first published: 2007-07-12)
15,700 reads
Difference between truncate and delete
This is an old topic and well documented, just google it and I believe you will get a lot,
However,...
2008-04-22
2,231 reads
Documentation Value Formula (Part II)
In my last post, I talked about what prompted me to give a deep thought to documentation work. Documentation, to me,...
2008-03-17
1,016 reads
Documentation Value Formula (Part I)
As a DBA, documentation work is unavoidable, we need to do documentation about things we have done, for example, what...
2008-03-01
1,067 reads
New DBA type: Test DBA
In DBA world, usually two types of DBA are defined depending on what a DBA is focusing on, i.e. development DBA...
2008-02-29
1,888 reads
SQL Server 2005 Replication bug?
Last week, in our production, we noticed some records are missing in the subscriber side while existing on the publisher...
2008-01-15
929 reads
Blogs
Automatic Index Compaction
By ReviewMyDB
Index maintenance has always meant nightly jobs and a window you have to defend....
The Goldilocks problem – Materialized Views
I’m sure you’ve all heard the tale of Goldilocks and the Three Bears, but...
Monday Monitor Tips: Virtual Machine Usage and Cost
By Steve Jones
One of the things I’ve been requesting for a number of years is cost...
Forums
SQL Art, Part 4: Happy 4th of July — A British DBA's Guide to Celebrating a War We Don't Talk About
Comments posted to this topic are about the item SQL Art, Part 4: Happy...
How We Handled a Vendor Retry That Loaded Twice in Snowflake
Comments posted to this topic are about the item How We Handled a Vendor...
Cognitive Coverage
Comments posted to this topic are about the item Cognitive Coverage
Question of the Day
Getting the Average
I have this data in the dbo.Commission table in a SQL Server 2022 database.
salesperson commission Brian 12 Brian 16 Andy 7 Andy 14 Andy 21 Steve 20 Steve NULLAll the data is a varchar, and I decide to run this query to get the totals for each salesperson.
SELECT SalesPerson
, AVG(TRY_PARSE(Commission AS int)) AS TotalCommission
FROM commission
GROUP BY SalesPerson
GO
What average commission is calculated for Steve? See possible answers