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I had that thought. Thanks for confirming that.

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Raul Jager
Sent: Friday, May 24, 2019 12:48 PM
To: midrange-l@xxxxxxxxxxxxxxxxxx
Subject: Re: Identity question

Using an "encoded vector index"  that statement will not read the table.

On 5/24/19 12:43 PM, Rob Berendt wrote:
What kind of performance hit is there on searching an entire table for the maximum of some number where you're also checking the values of two particular columns?
This kind of stuff is why things like identity columns and sequences were created.

Perhaps multi tiering sequences for that format might work?

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of
Raul Jager
Sent: Friday, May 24, 2019 12:39 PM
To: midrange-l@xxxxxxxxxxxxxxxxxx
Subject: Re: Identity question

Something like:  SELECT max(number) +1 from table where branch = :myBranch and point = :myPoint   ?

Will that work well when two or more processes use it?

On 5/24/19 11:50 AM, Luis Rodriguez wrote:
,,Raul,

Wouldn't it better to create a function that receives the branch and
point of sales ID and returns the number or string desired?

Regards,
Luis


Sent from my Moto G phone. Please excuse my brevity.

On Fri, May 24, 2019, 11:42 Raul Jager <raul@xxxxxxxxxx> wrote:

The Paraguayan version of the IRS (SET) requires that we assign
consecutive numbers to the documents (Bills) starting with one for
each branch and point of sale.

Can I get the system to generate the numbers? I had only seen one
sequence per file.

The numbers must have this format 001-001-0000001 First tree digits
are the branch, second group is the point of sale and the last seven
digits must be generated.

If not automatic, will a trigger be the best option?


____________________________________________________________________
_
______________________

The rules (in spanish)

a) Los tres primeros dígitos corresponderán al código del
establecimiento, donde se expide el documento.Este código será
asignado por la Administración Tributaria;

b) Separado por un guion, los siguientes tres dígitos corresponderán
al código asignado por el contribuyente a cada punto de expedición
dentro de un mismo establecimiento; y

c) Separada por un guion, la numeración secuencial de siete dígitos.


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