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Writing Test Cases for T-SQL Code


Writing Test Cases for T-SQL Code

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Steve Jones
Steve Jones
SSC Guru
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Group: Administrators
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I'd love some articles that look at a piece of code you've written (query/batch/proc) and then what test cases or code you've put together to verify it works.

Follow me on Twitter: @way0utwest
Forum Etiquette: How to post data/code on a forum to get the best help
My Blog: www.voiceofthedba.com
dwain.c
dwain.c
SSCoach
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Are you still looking for something on this?

I have an idea that works through the process of designing a SP to handle a parameterized query, based on the best practice suggested by Gail Shaw in her SQL in the Wild article on Catch All Queries.


My mantra: No loops! No CURSORs! No RBAR! Hoo-uh!

My thought question: Have you ever been told that your query runs too fast?

My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.


Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Learn to understand recursive CTEs by example.
Splitting strings based on patterns can be fast!
My temporal SQL musings: Calendar Tables, an Easter SQL, Time Slots and Self-maintaining, Contiguous Effective Dates in Temporal Tables
Steve Jones
Steve Jones
SSC Guru
SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)

Group: Administrators
Points: 143918 Visits: 19424
Yep, I'd actually like a few of these.

If you can put something together that tests some of the various possibilities for code, whether this is a variety of parameters or separate testing sprocs, that would be good.

Follow me on Twitter: @way0utwest
Forum Etiquette: How to post data/code on a forum to get the best help
My Blog: www.voiceofthedba.com
dwain.c
dwain.c
SSCoach
SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)

Group: General Forum Members
Points: 17431 Visits: 6431
As I have a hot idea in my head I'll work on it this weekend.


My mantra: No loops! No CURSORs! No RBAR! Hoo-uh!

My thought question: Have you ever been told that your query runs too fast?

My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.


Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Learn to understand recursive CTEs by example.
Splitting strings based on patterns can be fast!
My temporal SQL musings: Calendar Tables, an Easter SQL, Time Slots and Self-maintaining, Contiguous Effective Dates in Temporal Tables
dwain.c
dwain.c
SSCoach
SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)

Group: General Forum Members
Points: 17431 Visits: 6431
Article submitted!

Design, Build and Test a Dynamic Search Stored Procedure

It's a long one.


My mantra: No loops! No CURSORs! No RBAR! Hoo-uh!

My thought question: Have you ever been told that your query runs too fast?

My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.


Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Learn to understand recursive CTEs by example.
Splitting strings based on patterns can be fast!
My temporal SQL musings: Calendar Tables, an Easter SQL, Time Slots and Self-maintaining, Contiguous Effective Dates in Temporal Tables
Steve Jones
Steve Jones
SSC Guru
SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)

Group: Administrators
Points: 143918 Visits: 19424
Thanks, I'll take a look next week

Follow me on Twitter: @way0utwest
Forum Etiquette: How to post data/code on a forum to get the best help
My Blog: www.voiceofthedba.com
dwain.c
dwain.c
SSCoach
SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)

Group: General Forum Members
Points: 17431 Visits: 6431
I made a rather small but silly mis-statement which I have corrected and resubmitted.


My mantra: No loops! No CURSORs! No RBAR! Hoo-uh!

My thought question: Have you ever been told that your query runs too fast?

My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.


Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Learn to understand recursive CTEs by example.
Splitting strings based on patterns can be fast!
My temporal SQL musings: Calendar Tables, an Easter SQL, Time Slots and Self-maintaining, Contiguous Effective Dates in Temporal Tables
Steve Jones
Steve Jones
SSC Guru
SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)

Group: Administrators
Points: 143918 Visits: 19424
Bump.

We are looking for more articles, but in a real situation where you've written a test for your code. We want examples people can learn from.

Follow me on Twitter: @way0utwest
Forum Etiquette: How to post data/code on a forum to get the best help
My Blog: www.voiceofthedba.com
SQLEmil
SQLEmil
Grasshopper
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Group: General Forum Members
Points: 14 Visits: 29
Are you still looking for articles in this vein? I've been overhauling a lot of my organization's unit test infrastructure and thinking about what makes for good and useful tests as I work through them. I've one example where I took a mostly useless unit test and overhauled it to provide greater value, and thanks to source control, I can probably replicate the steps easily enough.

I've also been stretching the limits of what I can do with unit tests and the SSIS Catalog...
Steve Jones
Steve Jones
SSC Guru
SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)

Group: Administrators
Points: 143918 Visits: 19424
I would like some. I'd like to have an article that focuses on a particular test, why it's written, what it catches, or has caught.

Multiple articles is fine. Using any test framework.

Follow me on Twitter: @way0utwest
Forum Etiquette: How to post data/code on a forum to get the best help
My Blog: www.voiceofthedba.com
Steve Jones
Steve Jones
SSC Guru
SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)SSC Guru (143K reputation)

Group: Administrators
Points: 143918 Visits: 19424
bump

Follow me on Twitter: @way0utwest
Forum Etiquette: How to post data/code on a forum to get the best help
My Blog: www.voiceofthedba.com
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