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The Voice of the DBA

I Will Write Bad Code

I'll write bad code. I know it will happen. I'll produce a bad query, incorrect logic, or the wrong data transformation being returned.

This won't be a malicious act. It might be because of ignorance, or perhaps just a simple mistake. My code might be the result of short-sightedness or not accounting for a potential situation. I might even misinterpret poorly written specifications and place the blame on others. Maybe I'll misread the code and won't realize there's a problem.

And, for sure, this code will get deployed to production.

At some point I know this will happen, to me or someone else. And for whatever reason, I need to account for that fact in my software development process. I can't prevent mistakes, as decades of software development have proven. Despite my best efforts, code reviews, the tests implemented in QA and elsewhere, bad code is going to get deployed.

The important thing in any software development project is how you handle the mistakes. How do you move forward, and certainly, how do you apply a patch? Can you do it quick enough to minimize the impact to clients? Or must they deal with the issues, developing the workaround or missing functionality for a significant portion of time? Or will they consider abandoning your software for some other vendor?

One of the reasons I continue to advocate for a DevOps approach is that a known process can enable you to fix your mistakes in a timely manner. With a consistent approach to writing, testing, and deploying software, you can apply a patch when it is needed. Certainly the code needs to be logically fixed, but a reliable process will help ease all the overhead of getting your code to a production system.

DevOps can be implemented many ways, and if applied in name only, things won't improve. We can't say we're using DevOps, or we're coding faster, or we release every week. We need to really implement the three ways. However, if you approach your project and staff with the idea that although things are flawed, they can be improved and made better, you'll find that you can deliver those fixes for clients in an extremely timely manner with a minimum of risk.

DevOps allows us to move faster, but that's not the goal. The goal is that we improve things and have confidence that we can release when we want to, in a repeatable, reliable, less risky fashion.

Steve Jones from SQLServerCentral.com

Join the debate, and respond to today's editorial on the forums


The Voice of the DBA Podcast

Listen to the MP3 Audio ( 3.7MB) podcast or subscribe to the feed at iTunes and Libsyn. feed

The Voice of the DBA podcast features music by Everyday Jones. No relation, but I stumbled on to them and really like the music.

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Featured Contents

 

Automate MSBI deployments Using PowerShell

Kunal Rathi from SQLServerCentral.com

There are various ways we can deploy MSBI project deliverable. This article will give you an idea to automate MSBI deployments using Windows PowerShell. More »


 

sp_AllNightLog: Creating Jobs Like I’m The President

Additional Articles from Brent Ozar Unlimited Blog

Erik Darling explains why sp_AllNightLog creates so many jobs by default. More »


 

Extending DevOps practices to SQL Server databases with ReadyRoll from Redgate

In this webinar, Microsoft MVP Steve Jones and Redgate’s Arneh Eskandari will show you how Redgate’s Database DevOps solution can work to improve your database development and deployment processes. You'll see a demo of the following Redgate tools - ReadyRoll, DLM Automation and DLM Dashboard - and see how they plug into GIT. There will also be plenty of time to ask Steve and Arneh questions. More »


 

From the SQLServerCentral Blogs - Database Fundamentals #9: Schemas As Containers

Grant Fritchey from SQLServerCentral Blogs

Schemas are a very useful tool for managing the objects in your database. From security through process, through placement, schemas... More »


 

From the SQLServerCentral Blogs - SQL Server on VMware VMworld USA Videos Now On YouTube

kleegeek from SQLServerCentral Blogs

I just realized that our two SQL Server on VMware sessions that I co-presented on Tuesday at VMworld USA, both of which made the top... More »

Question of the Day

Today's Question (by Steve Jones):

At which version of SQL Server did Extended Events (XE) include all the same events that are available in SQL Trace?

Think you know the answer? Click here, and find out if you are right.


We keep track of your score to give you bragging rights against your peers.
This question is worth 1 point in this category: Extended Events (XE).

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To submit a QOTD, simply log in to the Contribution Center.

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Yesterday's Question of the Day

Yesterday's Question (by Steve Jones):

I have a simple matrix of values that represent some data. The data looks like this:

> m

     [,1] [,2] [,3] [,4] [,5]
[1,]    1    1    1    1    1
[2,]    1    2    2    2    1
[3,]    1    2    5    5    1
[4,]    1    2    5    5    1
[5,]    1    1    1    1    1

I'd like to get a quick visualization of this. If I run the image(m) function, what type of image to I get?

Answer: A heat map

Explanation:

The result of the image() function is a heat map. 

Ref: Image - click here


» Discuss this question and answer on the forums

Featured Script

Get SSAS Tabular Model (2016) Roles using Powershell `

Thasigan Chetty from SQLServerCentral.com

Open Powershell and execute the following script.

Or excute from a SQL server job.

Dont forget to update the script with the necessary server names.

Also create a table in a sql database.

[SSASDatabaseName] VARCHAR (XX)

,[SSASRole] VARCHAR (XX)

,[SSASUsername] VARCHAR (XX)

,[Timestamp] DATETIME2

And updates those details on the script ($query = "INSERT INTO [xyz].[dbo].[xyz]).

More »

Database Pros Who Need Your Help

Here's a few of the new posts today on the forums. To see more, visit the forums.

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PL_SQL compares with T_SQL - I think this is a place I can ask this question, because most  people here may know both PL_SQL and...


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Print a specific page in SSRS report - I have a SSRS report with multiple pages, I want to print only specific pages / or say selected pages.. 1) for...


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Problem Debugging Script Task - Hi. We have a strange problem when trying to debug a script task in SSIS 2012. Here's the scenario - my...


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