Kenneth Fisher

My name is Kenneth Fisher and I am Senior DBA for a large (multi-national) insurance company. I have been working with databases for over 20 years starting with Clarion and Foxpro. I’ve been working with SQL Server for 12 years but have only really started “studying” the subject for the last 3. I don’t have any real "specialities" but I enjoy trouble shooting and teaching. Thus far I’ve earned by MCITP Database Administrator 2008, MCTS Database Administrator 2005, and MCTS Database Developer 2008. I’m currently studying for my MCITP Database Developer 2008 and should start in on the 2012 exams next year. My blog is at https://sqlstudies.com/.

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The Book of Redgate: Profits

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Redgate is a for-profit company. We look to make money by building and selling...

Session Materials for Techorama & DataGrillen 2026

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I’ve uploaded the slides for my Techorama session Microsoft Fabric for Dummies and my...

Stop Using Pandas for Aggregations — Try DuckDB Instead

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If you've ever loaded a 2 GB CSV into pandas just to run a...

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BCA KCP Dakota | Tlp/Wa:0817866887

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Tlp/Wa_Cs:0817-866-887  Jl. Dakota No.Raya 42, H dan 46, Sukaraja, Kec. Cicendo, Kota Bandung, Jawa...

BCA KCP Mohamad Toha | Tlp/Wa:0817866887

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Tlp/Wa_Cs:0817-866-887  Jl. Moch. Toha No.197, Cigereleng, Kec. Regol, Kota Bandung, Jawa Barat 40253 @BCA...

Even When You Know What You're Doing, You Can Screw Up

By Grant Fritchey

Comments posted to this topic are about the item Even When You Know What...

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Question of the Day

The string_agg function

We create the following table and then insert some records in it: 

create table t1 (
   id int primary key,
   category char(1) not null,
   product varchar(50)
);

insert into t1 values
(1, 'A', 'Product 1'),
(2, 'A', 'Product 2'),
(3, 'A', 'Product 3'),
(4, 'B', 'Product 4'),
(5, 'B', 'Product 5');
What happens if we execute the following query in both Sql Server and PostgreSQL? 
select id, 
category, 
string_agg(product, ';')
                 over (partition by category order by id
                 rows between unbounded preceding and unbounded following) as stragg
from t1;

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