Two simple commands that can be a big help in performance tuning.
The first thing that always comes to mind when discussing performance tuning is query plans and rightly so. They are...
2014-09-02
2,595 reads
Kenneth Fisher
Generating a restore script
In order to speed up our backups on a large database our team decided to stripe the backup files. In...
2014-08-25 (first published: 2014-08-18)
7,522 reads
The amazing never shrinking heap
This is a quick demo of a little “trick” with heaps I’ve known about for a couple of years. However...
2014-08-25
617 reads
Two years!
Two years ago today I began my blog with a post about the DEFAULT keyword. I set out with the...
2014-08-20
951 reads
More than sp_help
If you have worked with SQL Server for very long you have probably run across the extremely useful system function...
2014-08-14
1,504 reads
Deny vs Revoke
Quick quiz. Which of these two commands is the opposite of GRANT?
DENYREVOKE
Well lets start with some definitions
GRANT – Grants permissions on...
2014-08-12 (first published: 2014-08-04)
8,527 reads
T-SQL Tuesday #57: SQL Family
This month’s T-SQL Tuesday topic is SQL Family and is brought to us by Jeffrey Verheul (b/t). It’s an amazing...
2014-08-12
595 reads
The clustered index columns are in all of the non clustered indexes.
Did you know that whatever columns you pick as your clustered index will be included in any non clustered indexes...
2014-08-07 (first published: 2014-07-30)
9,432 reads
SchemaBinding – What & Why
What
When you use the SchemaBinding keyword while creating a view or function you bind the structure of any underlying tables...
2014-08-06
1,125 reads
What is ANSI_NULLS and why will I be glad when it finally goes away?
Recently I wrote about what it means that a value is NULL. Right at the beginning I mentioned ANSI_NULLS and...
2014-08-04 (first published: 2014-07-28)
22,367 reads
Blogs
The Book of Redgate: Profits
By Steve Jones
Redgate is a for-profit company. We look to make money by building and selling...
Session Materials for Techorama & DataGrillen 2026
I’ve uploaded the slides for my Techorama session Microsoft Fabric for Dummies and my...
Stop Using Pandas for Aggregations — Try DuckDB Instead
If you've ever loaded a 2 GB CSV into pandas just to run a...
Forums
Even When You Know What You're Doing, You Can Screw Up
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The New Software Team
Comments posted to this topic are about the item The New Software Team
Database Mail in SQL Server 2022
Comments posted to this topic are about the item Database Mail in SQL Server...
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; See possible answers