Azure

External Article

Monitoring Azure Cloud and Hybrid Environments

  • Article

Cloud-based services and applications must still be monitored just like the on-premise ones. You still need most of your data center activities that ensure that your planning, budgeting, security and service-level obligations are met wherever the data and services are actually hosted. There is much to be said for an integrated approach to providing a unified view of entire application workloads on-premise. hybrid and cloud using the same tools wherever possible.

2017-08-16

3,995 reads

External Article

Introduction to Azure SQL Data Sync

  • Article

The majority of Azure SQL Database related features reach their General Availability (GA) stage relatively quickly. There are however, some exceptions. The most prominent example in this category is likely Azure SQL Data Sync, which has remained in Preview since its introduction 7 years ago. Fortunately, there are signs that this service might be finally reaching production-ready state. In thius article, Martin Policht will introduce its main characteristics.

2017-08-11

4,501 reads

External Article

Azure Networking for SQL Server DBAs

  • Article

The network is important to any DBA because so much performance is dependent on I/O, because of the importance of security, and ensuring that everyone get the right access. DBAs generally need not become experts in Azure networks, but it helps to understand the concepts and language. If you are running a SQL Server Virtual Machine in Azure, then VNets, Subnets, Network Security Groups, VNet peering and VPN gateways are all worth knowing about in order to to keep SQL Servers running smoothly.

2017-05-23

3,526 reads

External Article

Azure Load Balancers and SQL Server

  • Article

Load balancing in Azure has more importance for the DBA, because it is essential for Windows Server Failover Clustering in Azure, whether it is for AlwaysOn Availaiblity Groups, Failover Clustered Instances, or any other highly-available solution. Azure load balancing works out the location of the availability group, and routes traffic there. The load balancer detects a failure, and routes traffic to the new primary replica. Joshua Feierman gives an overview of what is required.

2017-05-02

4,451 reads

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The string_agg function

By Alessandro Mortola

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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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