SSIS - Execute Package Task
The Execute Package Task is an essential tool for any SSIS developer. Learn how to get the most from it.
2017-07-06
15,508 reads
Articles
How to Generate a Restore Script
There are multiple ways to accomplish a database restore. But if you wanted to restore a database from a script how might you accomplish that task quickly and accurately?
2017-07-06
3,891 reads
2017-07-06
3,083 reads
2017-07-05
137 reads
Machine Learning for Outlier Detection in R
A look into clustering to detect outliers in R. An extension on univariate statistical tests to include multivariate data.
2017-07-05
3,897 reads
The Basics of Good T-SQL Coding Style
TSQL Code must work properly and efficiently. That's not enough though. Unless you are working alone, have perfect memory and plan to never change job, then you need to comment and document your code, it must be inherently readable, well laid out, use informative and obvious names, and it must be robust and resilient; written defensively. It must not rely on deprecated features of SQL Server, or assume particular database settings. Robert Sheldon starts a series of articles that explains the basics.
2017-07-05
7,732 reads
2017-07-04 (first published: 2015-12-14)
11,005 reads
3 Solutions For Auditing Long SQL Server Extracts or Loads
In this post, Tim Smith looks at the different options you can use to audit your SQL Server extracts and loads during the ETL process.
2017-07-04
3,755 reads
A General Way to Maintain History Tables
You will see here a way to handle history tables. This way only takes into account Date-based data cleanup but is easily generalizable.
2017-07-03 (first published: 2015-09-28)
12,937 reads
Export data from SQL Server to Excel
What native SQL Server options are available to export to Excel? Jeremy Kadlec explains.
2017-06-30
5,930 reads
Blogs
Stop Using Pandas for Aggregations — Try DuckDB Instead
If you've ever loaded a 2 GB CSV into pandas just to run a...
Understanding Fabric Ontology
By James Serra
What problem is Fabric Ontology trying to solve? For years, most data conversations have...
QUOTENAME Basics: #SQLNewBlogger
By Steve Jones
Recently I ran across some code that used a lot of QUOTENAME() calls. A...
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The New Software Team
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Database Mail in SQL Server 2022
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The string_agg function
Comments posted to this topic are about the item The string_agg function
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