ETL (Extract Transform and Load)

External Article

The ETL from Hell - Diagnosing Batch System Performance Issues

  • Article

Too often, the batch systems that underlie a lot of database processing just grow without conscious design. When runs start to extend beyond their allotted time, and tuning no longer solves the problem, it is often discovered that batches are run in series, with draconian error handling. It is time to impose some rational design, and Nigel is a seasoned healer of batch processes.

2013-10-30

3,753 reads

External Article

Importing Data From Excel Using SSIS - Part 1

  • Article

Recently while working on a project to import data from an Excel worksheet using SSIS, I realized that sometimes the SSIS Package failed even though when there were no changes in the structure/schema of the Excel worksheet. I investigated it and I noticed that the SSIS Package succeeded for some set of files, but for others it failed. I found that the structure/schema of the worksheet from both these sets of Excel files were the same, the data was the only difference. How come just changing the data can make an SSIS Package fail? What actually causes this failure? What can we do to fix it?

2012-10-08

3,887 reads

SQLServerCentral Article

Importing SharePoint ULS and IIS Logs into SQL

  • Article

Importing data into SQL Server is one of the strengths of the platform. However it can require a bit of work for a DBA to make this an automated process. New author David Jansen brings us a technique for importing Sharepoint and IIS logs into SQL Server for later analysis.

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2009-12-24

3,927 reads

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UNISTR Escape

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Question of the Day

UNISTR Escape

In SQL Server 2025, I run this command:

SELECT UNISTR('*3041*308A*304C\3068 and good night', '*') as "A Classic";
What is returned? (assume the database has an appropriate collation) A: B: C:

See possible answers