I realize this gets into business logic, but a DB based solution might be best. Possibly some pre-calculated measurement tables.
Business problem: Creating a cut list for a window covering (blinds) system. It's preferably a fast calculation I could execute while the user awaits "order confirmation and pricing". A .5 second delay per order would be acceptable.
An order can have unlimited number of line items, but typically between 1 and 20 (number of windows in a single house).
(For this problem) the raw material is man-made, and therefore is always the same length for a particular pattern/color (take 12' for this example; we stock patterns in 9', 12', or 16' but it's always the same for a given pattern/color). I need to tell the cutters how to use the rawmaterial with minimal waste. Note: The saw blade takes 1/16th inch.
For each line item; I have pre-calculated the exact cut size and number of slats. Measurements are in inches at 1/8 (.125) inch increments. The length of raw material length we stock for this pattern is an easy link.
The goal is to average less than 6 inches waste per 12' piece of raw material.
Example order:
5 line items for pattern/color FAUX/white, stocked in 12' lengths.
Line 1: 34 slats at 35.125 inches.
Line 2: 36 slats at 36.875 inches.
Line 3: 50 slats at 42 inches.
Line 4: 55 slats at 70 inches.
Line 5: 52 slats at 30 inches.
The resulting cut-list-workorder would evaluate all lines together and tell them how many 12' slats to pull and how to cut them with minimal material waste.
My question:
I'm left wondering if a database style pre-populated answer list (or some other database based solution) might be a lot faster and simpler than some chess-style complex trial-and-error array based VB algorythm (that I haven't even begun to imagine how to write). If so; how would it look?
In addition; the cutters get something like $10/hr so we can't make it too complex. I'd rather waste a little material and avoid undue confusion, but not much. With $5+ million in this material per year, excess waste can really add up. Imagine the difference between 12% and 15% waste. It's an area worth investing in.
Sorry; I know it's not a simple question. Someone might find it interesting enough to solve, or at least provide hope for a DB solution. At present; I just can't imagine it.
I need help displaying information in a list on my report...
My dataset table extracts the fields, username and created date and my list is grouped by creator which puts each users info on its own page. My problem is that I cant figure out how to extract the following values:
The average number of items created per day/month/quarter/etc... (Most Important)
A sublist which displays the user's created count as follows: (Would be very greatful)
(I have figured out how to create these lists in the past using the grouping function on values, but becuase they would be counts instead of values I dont know how.)
How can I create a master list of a particular column, in other words is there a SELECT query I can do that would bring back one of every type of? here's an example: calls table -- bring back one of every kind of call_descr thx for any help.
I have a complex query where each row in the final dataset is a product. However each product has a number of authors associated with it. What I would like to do is have a query/subroutine join the authors to the product, as a string:
ProductID Title Authors 1 The Sacred and the Profane John Rieggle, George Alexi 2 Dancing in the Dark Dan Brown, Peter Kay, Paul Dwebinski
I have the following tables in an SQL Server database.
Contact ======= NameID TitleID Name
JobTitle ======== TitleID Title
I'm trying to make a form to add entries to the Contact table that lets me associate a job title to a name by choosing it from a drop down list. I have been able to make it so I get a drop down list of TitleID but I need the Title field displayed. I haven't been able to do it. Does anyone have any tips on how to do this?
I am trying to find a way to add into a table a flattened (comma seperated list) of email addresses based on the multiple columns of nformation in another table (joined by customer_full_name and postcode.
This is to highlight duplicate email addresses for people under the same customer_full_name and Postcode.
I have done this using a loop which loops through concatenating the email addresses but it takes 1minute to do 1000. The table is 19,000 so this isn't really acceptable. I have tried temp tables, table variables and none of this seems to make any difference. I think that it is becuase i am joining on text columns?
in the below sql why is year(classdate) " + " a " + " MONTH(classdate) a math command giving me 2006 - 12 = 167 and not "2006/12" as text? please help me cmdGetCat = New SqlDataAdapter("SELECT DISTINCT year(classdate) " + " a " + " MONTH(classdate) AS monthcode FROM dbo.classT INNER JOIN dbo.classgiven ON dbo.classT.classcode = dbo.classgiven.classcode WHERE (dbo.classT.discount = '-1') AND (dbo.classT.coned IS NOT NULL) ", conNorthwind)
How do i update a sql table so that the result cannot be less than zero?for example, lets say I have the column "Number"I have a sql update statement that subtracts 1 from number:"Update oTable SET Number = (Number - 1)"Except that Number cannot be less than zero. Is there a way to do this in sql statement so that I don't have to have a select statement just to check that Number is greater than zero to begin with? Thanks
I have a database for one of my websites, a picture rating site. Anyways, right now there are quicte a few tables, and I was wondering how to give the server a break and was wondering if this was possible:
Basicly I have a members table, and a votes table. Members will rate other users pcitures on a scale of one to ten, then the votes will be inserted into the votes table. The only problem with this is that calcuating all the votes a user has can put a straing on the server. I was wondering if it would be possible to create a math column in the members table that would automaticly figure out the users average and having it stored in a field in the members table, so all I would have to do is query the members average located in the mebers table, rather than tallying all the votes in the votes table for each member.
Hope this makes sense, a tutorial or any suggestions would be great!
select convert(float,'1.2334e+006')1233400.0select convert(decimal(20,2),'1.2334e+006')Server: Msg 8114, Level 16, State 5, Line 1Error converting data type varchar to numeric.can I set some options arithabort etc to have a workaround to thisproblem?Thanks.
I'm not a professional dba or dbd, but I'm proficient in the basics ofdatabase design and sql. I want to create a database of mathdefinitions, and I'm wondering how one would go about creating adatabase that contains mathematical notation (and I'm not just talkingabout basic symbols where I could get away with ascii code). I needto be able to insert a wide variety of mathematical expressions, fromfractions to integrals, into fields (just like you can enter in-linemath symbols in MS Word using equation editor). I have no clue how togo about this. Is it a matter of developing certain programmingskills/languages? Would such a capabliltiy be proprietary (dbms-specific)? Is it possible at all? Any help would be appreciated.Thank you.
Hi AllI'm trying to find a math function (if it exists) in SQL Server. If itdoesnt exist, then maybe someone can tell me what its called so I cando a bit more reading on itBasically I want to do this:Parameter Components1 12 23 1, 24 45 1, 46 2, 47 3, 48 89 1, 8and so onI'd like to be able to call a function and it would return true orfalse like sofunctionname(1, 9) = trueso 1 is a component of 9functionname(2, 9) = falseso 2 is not a component of 9functionname(4, 5) = trueso 4 is a component of 5If anyone could tell me if it exists in C#, VB.NET, VB6 or VBScript,I'd appreciate it!Thanks in advanceSam
Below is my table layout, query, and results. I need to perform some date math to display how much time is elapsed between locations as patients are checked into each care_unit. I believe I could use the unique careunit_key but am not sure how to go about this.
[srm].[CDMAB_CAREUNITS]
[CAREUNIT_KEY] [decimal](37, 0) NOT NULL,
[EPISODE_KEY] [decimal](38, 0) NULL,
[CARE_UNIT] [char](20) NULL,
[ROOM_NO] [char](5) NULL,
[BED_NO] [char](5) NULL,
[DATE_IN] [datetime] NULL,
[TIME_IN] [char](6) NULL
select
cu.careunit_key,
cu.care_unit,
convert(nvarchar,e.ADMISSION_DATE, 101) as Admit_Date,
convert(nvarchar,e.EPISODE_DATE, 101) as Discharge_Date,
convert(nvarchar,cu.date_in,101) as date_in,
substring(cu.time_in, 1,5) as time_in,
convert(nvarchar,cu.date_in,101) +
convert(datetime,substring(cu.time_in, 1,5)) as date_time_in
FROM srm.episodes e
inner join srm.CDMAB_CAREUNITS cu on cu.episode_key = e.episode_key
inner join srm.item_header ih on ih.item_key = e.episode_key
inner join srm.patients p on p.patient_key = ih.logical_parent_key
Does anyone know if there is such a quary that can be written which would add up(or any math functions) a line of cells (on different rows) similar to that of working with a excel document?
If so please steer me towards the correct syntax for this.
I have a column coming from DB2. It is the time is stored as 6 decimals of a second. So the value I got coming in is 44846(DT_I8), which needs to be divided by 60 to get minutes (747 minutes remainder 26 seconds). Then divide 747 by 60 to get 12 hours remainder 27 minutes. Thus the time is 12:27:26.
I have got a dervived column doing (DT_R8)(SUBSTRING((DT_WSTR,8)PSCCLOGTIM,1,5)) / 60 but the answer I am getting out is 747.433333. Close, but not close enough. Now I assume my problem has something to do with the Math being done on actual numbers not Time based numbers.
Anyone got any ideas on where I am going wrong and what the expression should look like?
I have been trying to make a database that counts up and down votes (like eBay ratings or reddit votes). I think (hope) I have got the database design right. I know that you can perform math functions in SQL, but I want to use two COUNT()s from the same table and subtract one (the down votes) from the other (the up votes). I have been learning ASP.NET 2.0 and it's going well, but I really need help with this. I asked a question on this forum before and the answers were great and really helpful. If anyone can help that would be great. Thank you. Jack.
The business rule is, the sales manager is commissioned on the avg. numberof appointments set up per salesrep per day during the month.I have 2 tables: The UserLog table records only 1 entry per day per user(salesrep). This will log how many salesreps worked a particular day. Thesecond table logs any appointments set up.UserLog: ID, UserName, EnteredTimeAppointment: ApptID, EnteredTime, ApptDateI figured that, for a given date ranged, I could1. sum the number of appointments2. sum the number of days worked2. sum the salesreps / number of days = avg number of salesreps per day3. number of appointments / avg number of salesreps per day = avg numberof appointments per sales repBut this logic is flawed. If I average out every day and then take anaverage of this daily average, I get a different result. Any ideas on howto best solve this problem?Thanks.
To set the stage, Tables are set up as such for this question: -----------
Table: Answers ID - Integer - Auto Answer - Integer QuestionID - Integer - FK from the QuizMaster table StudentID - Integer - FK from the Students table
Table: QuizMaster
ID - Integer - Auto Answer - Integer
Table: Students ID - Integer - Auto StudentName - Varchar(50) ---------- I would like to have an either a sql statement (1st) or a stored procedure (2nd) that would give me the percent correct for each student on the test.
In Access I could cheat and use this:
Code BlockSELECT Students.StudentName, Count(Students.StudentName) AS TotalCorrect, (SELECT Count(QuizMaster.ID) FROM QuizMaster;) AS TotalQuestions, ([TotalCorrect])/([TotalQuestions])*100 AS PercentValue FROM (Answers INNER JOIN Students
ON Answers.StudentID = Students.ID) INNER JOIN QuizMaster ON (Answers.Answer = QuizMaster.Answer) AND (Answers.QuestionID = QuizMaster.ID) GROUP BY Students.StudentName ORDER BY Students.StudentName, PercentValue;
Which is composed of the following...
Code Block
SELECT Students.StudentName,
Count(Students.StudentName) AS TotalCorrect FROM (Answers INNER JOIN Students
ON Answers.StudentID = Students.ID) INNER JOIN QuizMaster ON (Answers.Answer = QuizMaster.Answer) AND (Answers.QuestionID = QuizMaster.ID)
GROUP BY Students.StudentName;
SELECT Count(QuizMaster.ID) AS TotalQuestions FROM QuizMaster;
([TotalCorrect])/([TotalQuestions])*100 AS PercentValue
But... that wont fly in SQL Server...What would work without using temp tables? What would be the EASIEST way to do this?
DECLARE @TotalQuestionsAsked as Integer; DECLARE @StudentName as VarChar(50); DECLARE @QuestionsCorrect as Integer; DECLARE @PercentCorrect as Float;
set @TotalQuestionsAsked = select COUNT(*)FROM QuizMaster; set @StudentName = select StudentName from Students where ID = @StudentID;
set @QuestionsCorrect = select count(Answers.ID) from Answers LEFT JOIN QuizMaster on Answers.QuestionID = QuizMaster.ID where StudentID = @StudentID AND QuizMaster.Answer = Answers.Answer; set @PercentCorrect = (CAST (@QuestionsCorrect AS FLOAT) / CAST (@TotalQuestionsAsked AS FLOAT)) * 100.0;
select @QuestionsCorrect as TotalCorrect, @StudentName as Student, @TotalQuestionsAsked as NumQuestions, @PercentCorrect as CorrectPct;
END
But I need this as a datasource for a datagrid that would show all students etc... so using a parameter isn't really what I want. So... could a stored procedure work for this?
The value in the table of one DB is 17869 sq. ft. Now to insert this value in a new table of other database the reporting basis is 1000 i.e I need to do 17869/1000 = 17.8 so I have to take the value as 18. Another thing to be kept in mind is the value in the new table should have leading Zeroes. If the value is 18 it should be displayed as 0000018 ( data type in new table is Varchar(7) and in old table char (9) ). What can be the best way to implement this??
Hi All, We have a development server and about 25 Production servers. Whenever we did any DDL modification to development, it should be applied to all 25 different servers. I am trying to find a way to apply the changes to these servers from Development server without going to each server and run the script. Is there any way I can automate this action. There is no replication in all these servers. Can you please advise me on how to do this. This is a high priority task i have been assigned and I would appreciate any comments asap. Thanks in advance.
I am using merge replication between SQL Server 2005 and SQL Express. Some of the articles in my publication have filter conditions. Changes to subscription databases are being applied to the publication database without regard to these filters.
The easiest way to see this problem is to create a merge publication with a single table article with @subset_filterclause of '0 = 1'. Any inserts to the publication database will not be propagated to the subscription database, but inserts to the subscription database will be propagated to the publication database. Can this be right?
I have created a foreach container to capture values from a query and run a script for each line. For some reason though I can't get past the variable mapping.
The SQL Task that is linked to the Foreach container is somthing like this:
SELECT str1, str2, str2, nValue1, nValue2
FROM MyTable
In the SQL Task I've set the following
ResultSet = Full Result Set
Connection Type = OLE DB
Result Name = 0
I've created the following Variables with a Package scope
s1 as String
s2 as String
s3 as String
n1 as Double
n2 as Double
When I run the package I get the following errors
Foreach variable mapping number 4 to variable "User : : n1" cannot be applied
Foreach variable mapping number 5 to variable "User : : n2" cannot be applied
The data type of nValue1 and nValue2 in MyTable are both numeric(19,4)
In setting the variable types in the package it seems that the closest to numeric(19,4) would be double. Is this why it is failing? Is there any way around it? I just need to pass the variables which are numeric and have decimal places.
I finished applying SP 1 to sql2k5. Under the replication monitor all of the subscriptions now look like [].databasename when they were originally [subscriber1].databasename. Under Mgmt Studio I see the subscriptions correctly. When I try and replicate I get the message "The subscription to publication 'pub_databasename has expired or does not exist." I have tried to reinitialize the subscriptions but it doesn't work. Is there a way to solve this without have to drop the subscriptions and add them again as I do not want to lose the changes that were made on the subscriptions. We are using merge replication. Thanks.
Is the 4GB Database size calculated by totalling up the size of all the databases in an instance OR against each individual DB in an instance (e.g. you can have an unlimited number of DB each up to 4GB in size)? TIA Antony
