Foreign Keys are one of the fundamental characteristics of relational databases and enforce the referential integrity. Is it a good idea to index a FK relationship? When can it help?
2016-09-16 (first published: 2015-06-29)
15,773 reads
To demonstrate that dynamic modules in PowerShell can be used to easily create objects with methods and properties, Phil Factor implements an expression analyser written in PowerShell, using a variation of Dijstra's Shunting Algorithm.
2016-09-16
5,804 reads
Row Level Security is one of many new features in SQL Server 2016. It provides a much easier, consistent, and maintainable solution for row-based security rules. In this blog post, Data Platform MVP Steve Jones introduces this new feature, and walks through how Redgate SQL Compare can safely and reliably handle RLS changes.
2016-09-15
3,121 reads
Tim Smith shares some ideas about how to handle and alert on irregular data coming from APIs when loading your database.
2016-09-14
3,377 reads
Read about the Restore Genie and the new support for fork points, Azure and Multiple Concurrent Restores.
2016-09-13
1,940 reads
Power BI allows you to connect directly to the data just as if it were a “standard” connection, and modify and extend the data to support analytics. By using DirectQuery, you can build reports based on extremely large datasets where re-importing data not a practical solution. It also allows you to do data aggregations on the server. There are, of course, restrictions as well but it is nevertheless a worthwhile technique to use where appropriate. Adam Aspin explains all.
2016-09-13
4,392 reads
this article describes about creating partitions on our existing Tables and also gives details about how to create rolling partition to support new data
2016-09-12
29,343 reads
Arshad Ali takes a look at traditional analytics architecture, the challenges it faces, and how the newly introduced Real-time Operational Analytics feature overcomes those challenges.
2016-09-12
3,683 reads
We've all heard that definitive statement: "Avoid using cursors." But, in my opinion, what really should be conveyed is: "Avoid using row-by-row operations when possible."
2016-09-09 (first published: 2015-06-01)
13,583 reads
Gerg Robidoux demonstrates a couple of methods for determining which version of SQL Server you're running, as well as what service pack or hotfix is installed.
2016-09-09
4,482 reads
By Steve Jones
Redgate is a for-profit company. We look to make money by building and selling...
I’ve uploaded the slides for my Techorama session Microsoft Fabric for Dummies and my...
If you've ever loaded a 2 GB CSV into pandas just to run a...
Comments posted to this topic are about the item Even When You Know What...
Comments posted to this topic are about the item The New Software Team
Comments posted to this topic are about the item Database Mail in SQL Server...
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