T-SQL (SS2K8) :: Divide Using Formula From Different Table

Jan 23, 2015

I need to evaluate a formula in sql server 2008

Table 1 contains

Entity Value
A 2424053.500000
B 1151425.412500
C 484810.700000
Table 2 contains

Entity Formula
A (2100*(1-0.0668)*24*mday*10)
B (1000*(1-0.0575)*24*mday*10)
C (1260*(1-0.09)*24*mday*10)

Where mday is number of days taken from user

I need to calculate the output of value/formula for each entity can you provide me the query for the same

The datatype for formula column is varchar

I do not have the liberty to use cursors or loops.mday will be a input fromt the user say 'mday = 31' ..i need to divide the value in the first table with the computed value of the formula after replacement

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Oct 21, 2014

Being one step removed from innumerate, I was wondering whether there was a more elegant way to avoid divide by zero error instead of trudging through a bunch of isnulls.

My intuition tells me that since multiplication looks like repeated addition, that maybe division is repeated subtraction?
If that's true is there a way to finesse divide by zero errors by somehow reframing the statement as multiplication instead of division?

The sql statement that is eating my kishkas is

cast(1.0*(
(ISNULL(a.DNT,0)+ISNULL(a.rex,0)+ISNULL(a.med,0))-(ISNULL(b.dnt,0)+ISNULL(b.rex,0)+ISNULL(b.med,0))/
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Is there a way to nucleate the error by restating the division? My assertion underlying this statement is that the a alias represents a premium paid, so between medical, pharmacy and dental, there MUST BE at least one premium paid, otherwise you wouldn't be here. the b alias is losses, so likewise, between medical, pharmacy and dental, there MUST BE at least one loss (actually, it just occurred to me that maybe there are no losses, but that would be inconceivable, but ill check again)) so that's when it struck me that maybe there's a different way to ask the question that obviates the need to do it by division.

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Mar 6, 2014

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select cast((35622.15/2) as decimal(15,2))

Is there any way i can achieve this.

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Sep 17, 2014

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I want to perform following without using case if it is possible.

When value of Flag is 0 then Qty*(CF2/CF1)
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And i Don't want to use any functions like isnull,NullIf,IIF even not union or union all.How to do this calculation without using any function.

Actually i am having more then 100000 rows in table and if i use functions then my index might not be called.,that why want to avoid cases and functions.

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Apr 6, 2015

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Feb 25, 2015

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I found that the query on an XML-variable with a literal works well.

DECLARE @sParsedFormula varchar(200);
DECLARE @xFormula xml;
SET @xFormula = '';
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I can't directly pass @sParsedFormula to the query otherwise I get "The argument 1 of the XML data type method "query" must be a string literal". What is the correct XQuery-syntax to evaluate the SQL:variable?

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Sep 1, 2015

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Jun 8, 2001

Hello Folks,

I'm looking for the group's collective wisdom on the following issue, I'm sure many have been confronted with it.

I'm designing a db for a website that will utilize SQL Server 7. I have few tables that I think will grow very large row wise and that will be written to an read from frequently. I sense that I might be able to get better perfomance out of the system if I split many of these large tables up (row wise) into many smaller tables.

For example, The website that I'm working on has a "MailingAddresses" db table that contains the mailing addresses for the sites users (subscribers and other misc users - 1 record per user, anticipating 70,000+ users). Each user can update their record, and there will be frequent queries to the tables to get addresses for both internal admin use and for display on public webpages.

The website has five distinct sections that are in some sense like five distinct websites. Each user belongs to only one of these sections and they won't migrate between sections. Therefore I'm considering breaking up the one large "MailingAddresses" tables into five smaller tables, one for each section, i.e., "MAddressesSectionA", ..., "MAddressesSectionE".

These tables will have the same fields and constraints. Also of course there would be the same number of reads and writes in total with the five smaller tables as compared to that for the one big table. Also the combined size of the info in the five smaller tables would be the same as that for the one large table.

Though it's going to more of a pain to manage five tables versus one, I have a hunch it might be easier for the dbms to handle reads and writes with five smaller tables than with one large table...

...Of course this is true when queries are mainly respective to users from just one or two of the sections (as might be the case) - the big table then has the overhead of the address records for users in the other sections. BUT is there any benefit with the five smaller tables route when they are all frequently accessed??? Sure each select query has fewer records to go through, but with all five tables in play the dbms has to deal on average with the same amount of info as in the one big table.

What do you folks think, to divide or not to divide the big table(s) up row wise into smaller tables?

I guess the issue is summed up in this question: In general, can a dbms better handle in memory, and more quickly write to and query access - one BIG table with a+b+...+n records, or N smaller tables with a, b,...,n records respectively?


Thanks for the collective wisdom, - Jerry

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by the way,
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CREATE TABLE #HeaderOrder(
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[HeaderCode2] [varchar](10) NOT NULL,
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[code]...

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SELECT dbo.FunctionName([Parameter1, Parameter2])

But i can't save the table, "Error validating the formula".

Pls. help
Thanks a lot.

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So the formula can be :
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Is it possible?
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Below code.

ALTER Procedure [dbo].[sp_ViewCreate]
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[code]....

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2/3/2014
3/3/2014
4/3/2014

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union

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[Code] ....

gives:

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Table B

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---
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