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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:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

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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.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

Helpful Links:
How to post code problems
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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.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

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.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

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