2005-11-28
1,175 reads
Integration Services (SSIS)
Checksum Transformation
The Checksum Transformation computes a hash value, the checksum, across one or more columns, returning the result in the Checksum output column. The transformation provides functionality similar to the T-SQL CHECKSUM function, but is encapsulated within SQL Server Integration Services, for use within the pipeline without code or a SQL Server connection.
2005-11-23
1,697 reads
2005-11-22
1,227 reads
2005-11-09
1,227 reads
Configuring the Pivot Component
Sometimes coincidences happen that make you sit back and say Hmm. Couple of days back Ovidiu, one of our senior developers, came by and asked me to blog about the Pivot transform. Then earlier today someone doing a high end POC down south need the same information.
2005-11-09
2,070 reads
SSIS - Reusable Benchmark Harness
We all know testing is important, but face it, testing is not the highlight of anyone's daily work. And more important than testing your code the first time is regression testing after you have fixed a few bugs. Kristian Wedberg brings us a new article that uses SSIS to build a harness that allows repeatable testing of code and applying benchmarks to be sure that things are working as expected.
2005-11-02
8,256 reads
2005-11-01
1,471 reads
2005-10-27
1,268 reads
2005-10-19
1,317 reads
2005-10-13
1,159 reads
Blogs
The Book of Redgate: Profits
By Steve Jones
Redgate is a for-profit company. We look to make money by building and selling...
Session Materials for Techorama & DataGrillen 2026
I’ve uploaded the slides for my Techorama session Microsoft Fabric for Dummies and my...
Stop Using Pandas for Aggregations — Try DuckDB Instead
If you've ever loaded a 2 GB CSV into pandas just to run a...
Forums
Even When You Know What You're Doing, You Can Screw Up
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The New Software Team
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Database Mail in SQL Server 2022
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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