2010-07-20
2,615 reads
Jayakumar Krishnan
2010-06-29
3,049 reads
How to create Policies using PowerShell scripts
This article explains how to create policies with user defined conditions in MS SQL 2008 using PowerShell scripts
2010-05-03
4,524 reads
How to Evaluate Policies on Multiple Instances
This article describes how to Evaluate Policies on Multiple Instances using EPM and PowerShell.
2010-03-29
5,250 reads
2010-01-18
2,506 reads
Using SQL Server 2008 PBM to Monitor Free Space
Keeping track of the space used and free in your database files is something that all experienced DBAs need to do. And something many new DBAs forget. New author Jayakumar Krishnan brings us an easy technique to do this in SQL Server 2008 with Policy Based Management.
2009-12-16
8,511 reads
2009-11-27
2,908 reads
Step by Step how to setup Service Broker in Single Database
This article describes step by step how to create Service Broker objects and set up a basic conversation between the Initiator and Target from new author Jayakumar Krishnan.
2009-09-29
8,787 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