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Create a Tally or Numbers Table


Create a Tally or Numbers Table

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An Phu
An Phu
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I prefer to use "Number" (one-based) so that I can distinguish it from "WholeNumber" which is zero-based. The column name I used for both tables is "value".
Jeff Moden
Jeff Moden
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I'd have a hard time doing that because Number is a reserved word but to each their own. Also, are you implying that you have two separate tables? One for one-based and the other for zero-based? If so and if the use of BETWEEN is a pain, why not just have a single table starting at zero and a pass-through view with a >0 criteria? The underlying clustered index would still be used in either case.

Also, although I appreciate why you called your tables what you did and why, would it not be less confusing to casual users of your system to call one-based Number1 and zero-based Number0?

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
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Although change is inevitable, change for the better is not.
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An Phu
An Phu
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I didn't think of them but now that you pointed them out, you are right on both observations.

1. A single table starting at zero and a pass-through view with a >0 critiera.
2. Number1 and Number0 would be easier for casual user.


>if the use of BETWEEN is a pain
I'm curious how you would use BETWEEN when you need a zero-based number table.
Jeff Moden
Jeff Moden
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What I meant by the BETWEEN was, if you have a zero-based table and need a unit-based solution, then the WHERE clause would need to include WHERE N BETWEEN 1 AND @DesiredInt. That would also allow you to use just a single table.

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is not.
Just because you can do something in PowerShell, doesnt mean you should. Wink

Helpful Links:
How to post code problems
How to post performance problems
Forum FAQs
ben.mcintyre
ben.mcintyre
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Jeez Jeff, I knew you'd been doing Tally tables for a long time, but you wrote the article THAT long ago ?
Talk about nativity ...
Jeff Moden
Jeff Moden
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ben.mcintyre (11/24/2011)
Jeez Jeff, I knew you'd been doing Tally tables for a long time, but you wrote the article THAT long ago ?
Talk about nativity ...


:-D

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is not.
Just because you can do something in PowerShell, doesnt mean you should. Wink

Helpful Links:
How to post code problems
How to post performance problems
Forum FAQs
Jeff Moden
Jeff Moden
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RBarryYoung (5/1/2008)
Just google "tally table". The procedural (manual) form is used by schools a lot.


After 6 years, it would appear that Google has finally caught up with what is meant by a "Tally Table". :-P At least insofar as how we use it.

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is not.
Just because you can do something in PowerShell, doesnt mean you should. Wink

Helpful Links:
How to post code problems
How to post performance problems
Forum FAQs
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