Additional Articles


External Article

The difference between libraries and frameworks

The concept behind frameworks and libraries is to provide reusable code that you can use to perform everyday tasks so that developers don’t have to write all of the code from scratch for every project. However, there are some differences that you need to understand as you start writing code, which I will cover in this article.

2023-07-05

External Article

Searching Flyway Migration Files using Grep and Regex

This article demonstrates a cross-RDBMS way of searching through a set of SQL migration files, in the right order, to get a narrative summary of what changes were made, or will be made, to one or more of the tables or routines within each migration file. Getting these summary reports, even from a set of SQL migrations, isn't difficult, but having a few examples makes it a lot quicker to get started.

2023-06-30

External Article

Pipelining Configuration Information Securely to Flyway

This article demonstrates two techniques for allowing Flyway to read extra configuration information from a secure location, possibly encrypted. The first technique pipes the contents of the config file to flyway via STDIN, and the second uses PowerShell splatting. This makes it much simpler to use Flyway to manage multiple development copies of a database using role-base security.

2023-06-23

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Question of the Day

Comparing Images

I am building an ETL process between these tables in SQL Server 2022 set to 160 compatibility level:

CREATE TABLE Image_Staging
( imageid     INT NOT NULL CONSTRAINT Image_StagingPK PRIMARY KEY
, imagestatus TINYINT
, imagebinary IMAGE);
GO

CREATE TABLE Images
( imageid       INT NOT NULL CONSTRAINT ImagesPK PRIMARY KEY
, imagestatus   TINYINT
, imagemodified DATETIME
, imagebinary   IMAGE);
GO
I want to run this query to check if the images already loaded exist. This will help me decide if I need to insert or update an image. What happens with this query?
SELECT i.imageid
FROM
  dbo.Image_Staging AS ist
  INNER JOIN dbo.Images AS i
    ON ist.imagebinary = i.imagebinary;

See possible answers