2013-04-18 (first published: 2013-04-05)
1,463 reads
Backup and restore
Beating Backup Corruption
The most critical task for all DBAs is to have a Backup and Recovery strategy that ensures, every day, that in the event of a disaster they can restore and recover any database, within acceptable limits for data loss and downtime. Even with all the required backups in place, it's easy to miss subtle failings in the overall plan that can, and eventually will, defeat your recovery plans.
2013-01-28
2,889 reads
Developing a SQL Server Backup Strategy
Developing a backup procedure that makes sure you can do restores should be one of your top priorities as a DBA. In this article Greg Larsen discusses some of the concepts to consider when developing, building and testing a backup strategy.
2013-01-14
3,298 reads
SQL Server Backup Questions We Were Too Shy to Ask
During presentations about doing database backups and restores, there seem to be two two types of questions that are commonly asked, Those that come from the floor during the presentation, and those that are asked in private afterwards. These are sometimes more interesting, and challenging to answer well.
2012-12-11
3,466 reads
2012-12-07 (first published: 2012-11-19)
1,390 reads
Free eBook: SQL Server Backup and Restore
You can download a free eBook from SQLServerCentral and Red Gate software on the most important task a SQL Server DBA or developer needs to understand.
2013-01-25 (first published: 2012-10-23)
12,771 reads
Grant’s video warning – backup verification
Grant takes a humorous (but completely serious) look at why you should be regularly verifying your backups. Get top tips for backup and recovery, and protect yourself when disaster strikes. Watch the video
2012-09-21
2,886 reads
Partial Backup and Restore
Shawn McGehee discusses partial backups, how they're used, and how to avoid potential problems when restoring from a partial backup.
2012-05-15
3,016 reads
2012-02-21
2,429 reads
How to Kill a Company in One Step or Save it in Three
The majority of companies that suffer a major data loss subsequently go out of business. Wesley David remembers vividly the day when the organisation he worked for found that they couldn't restore their data, and the subsequent struggles that ensued. Shoulda-woulda-coulda.
2012-02-20
4,949 reads
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The string_agg function
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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; See possible answers