Storing A Value, Vs Computing A Value
Sep 5, 2007
Hi,
I'm having a DB designed for me, and I'm inspecting it and wondering what in general is the better way to do this.
We have a product, which we are counting "product views". The DB designer has created columns called "view_today" and "views_alltime".
I specified I wanted a normalized database, I'm thinking this is technically not normalized ? Am I correct ?
Wouldn't it be better to have a query that counted the views off the logging table ? I can't see any advantage to doing it the way its been designed except to save time.
Thanks for any input !
Mike123
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Jul 20, 2005
Has anyone here heard or come across an article or write up about GridComputing in SQL Server 2000?Bharathihttp://www.vkinfotek.com
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Dec 29, 2006
Hello there,I just want to ask if storing data in dbase is much better than storing it in the file system? Because for one, i am currenlty developing my thesis which uploads a blob.doc file to a web server (currently i'm using the localhost of ASP.NET) then retrieves it from the local hostAlso i want to know if im right at this, the localhost of ASP.NET is the same as the one of a natural web server on the net? Because i'm just thinking of uploading and downloading the files from a web server. Although our thesis defense didn't require us to really upload it on the net, we were advised to use a localhost on our PC's. I'll be just using my local server Is it ok to just use a web server for storing files than a database?
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Mar 11, 2008
hi please help me,i have a table queried using this sql, select name,(select count(*) from myTable a where a.name = r.name ) as Total, (select count(*) from myTable b where b.name = r.name and dnum > '1') as Used, (select count(*) from myTable c where c.name = r.name and dnum < '1') as remainingfrom myTable r group by namebut i need one more thing in this table that should look like this,nameTotalUsedRemainingPercentageA126650%B2021810%C150150% this is to add the BOLD field from the above table, but my problem is that the computation is "Used / Total = Percentage%"so how can i do this, please help methanks
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Jan 5, 2006
hi everybody,
i'm trying to calculate the 'SUM' of time spent in hrs. n min. How can i do this using SQL Server?
What i mean is, i've a column 'TIME_SPENT' that has 'datetime' datatype. This column saves time spent for an activity in format 'hh:mm'. Suppose a user spends 45min for activity 'A' and say 1hr 25 min for activity 'B' then i want to calculate the 'SUM' of 'TIME_SPENT' for the user which should appear as 'Total time spent =2:10'
Can somebody pls help me with this?
Thnx in advance.
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Mar 16, 2004
I am attempting to compute Service Levels for an interaction based upon business hours. For example, an email arrives at 4pm and is handled the following day at 10am. Call Center Hours are 8-5.
Essentially I have a number of different alternatives, and have found some potential solutions, including:
www.dbforums.com/arch/7/2003/9/914261
However, my situation has a couple of additional twists to the standard 8hrs of business M-F. The call center is open different hours depending upon the day of the week. For example, 8-5 M, 10-7 T, 8-5 W Th F, 10-2 Sat, 10-12 Sun
Additionally, I would like to remove Holiday's from the calculation for service level as well.
I have explored a number of different table DTD's, but none seem to be a perfect fit for determining the number of "open" hours between when an interaction arrived, and when it was handled.
The DTD I have for the Holiday table is as follows:
CREATE Table Holidays (HolidayDate DateTime)
GO
Insert Into Holidays (HolidayDate) Values ('12-25-2004')
Please let me know what you feel would be the DTD for storing the business hours and also the query for extracting the number of Open hours between two dates
Thank you in advance
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Jul 6, 2013
I encountered a tricky problem. The original data, say, table_o, is shown below:
IdsStatusDate
ID1402-May-13
ID1310-May-13
ID1216-May-13
ID1120-May-13
ID2308-May-13
ID2210-May-13
ID2119-May-13
The final resulting table, e.g., table_f, is:
Ids4->3 3->2 2->1
ID18 6 4
ID2NULL 2 9
The values in the final table are the days used by each ID transferring from status i to status i-1. E.g., ID uses 8 days (10-May-13 - 2-May-13) to go to status 3 from status 4.
It is hard for me to come up with a table like the final table, although I know that the difference between two adjacent rows can be computed by using self-join and timediff().
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Sep 6, 2007
Dear All.
I'm a fairly new SQL programmer so apologies if this is a silly question.
I'm trying to create a new column/variable from 3 other variables where the new column = column 1 unless column 1 is blank, then = column 2, unless column 2 is blank, then = column 3.
But I don't know where in my query to begin building this. Should I build it in a subquery? Thanks in advance for any replies.
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May 17, 2008
Hi,
I want to create a view where I can calculate the sum of a couple of bit value columns,
aswell as keeping track of the total number of bits set to true.
Here is an example:
dbo.Band
BandID int
Name nvarchar(50)
Country nvarchar(50)
dbo.Record
ID int
Name nvarchar(50)
BandID int
Label nvarchar(50)
InProduction bit
InSkodne bit
From these tables I created this view:
dbo.TestView
SELECT dbo.Band.Name, dbo.Band.Country, dbo.Record.Name AS Recordname, dbo.Record.Label, CONVERT(int, dbo.Record.InProduction) AS InProduction,
CONVERT(int, dbo.Record.InSkodne) AS InSkodne, CONVERT(int, dbo.Record.InProduction) + CONVERT(int, dbo.Record.InSkodne) AS Total
FROM dbo.Band INNER JOIN
dbo.Record ON dbo.Band.BandID = dbo.Record.BandID
I use the convert function to be able to use SUM() across my bit columns, which works fine. Problems is I´m not sure that the way I´m creating the TOTAL column is the best way to go. Any other ideas?
I´m having some problems using this view and the TOTAL column in particular when referencing this view from applications outside SQL Server...
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May 11, 2008
Hello all!
I´m currently devoloping an application where users can register errors related to recieved purchase orders.
I store these values in i table where the purchase order id i PK, and the possible errors that
can exist are stored as bit.
Now I want to be able to put a price on these errors.
I´m thinking about adding another table, containing all possible errors as columns, and then storing the cost of each error as an integer, and probably also a datetime for keeping track of when the costs was last updated.
I´m pretty sure this problem has been solved alot of times before, so I don´t wanna do something stupid here :-)
I´m also wondering about how it would be best to show the computed values?
Should I use a view for this?
For example:
SELECT (dbo.Orders.QuantityError * dbo.Costs.QuantityError )
FROM dbo.Costs CROSS JOIN
dbo.Record
assuming now that the Costs table only contains one row.
Is this the right way to go, or can you guys give me hints to a better solution?
Regards
Daniel
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Dec 19, 2001
Is there a quick easy way to calculate rowsize for a record in a table that has data in each column?
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Sep 13, 2006
hi !
Just started playing around with SQL 2000 and I createda sample table called 'actor' which has 4 columns
1. actorID
(formula= LEFT(NEWID(), 3)+ LEFT([actorFirst], 2) +
LEFT([actorLast], 2) + RIGHT(NEWID(), 3))
2. actorFirst
varchar(20) NOT NULL
3. actorLast
varchar(20) NOT NULL
4. actorName
(formula = [actorFirst] + ' ' + [actorLast]
Now my problem is that I want to set a primary key constraint on actorID but it doesn't let me because it the NULL check mark is automatically checked and I cannot check it off ... and I can't set a primary key on something which is allowed to be NULL....
I don't understand why 'actorName' column which is also calculated doesn't have that default NULL checked and locked ....
What am I doing wrong ? Please help ....
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May 8, 2007
Hello all, I known this is a SQL Server forum, but some people maybe have worked with oracle and can help me.
Microsoft's article "http://www.microsoft.com/sql/prodinfo/compare/oracle/mythandreality.mspx :"
reads as follows:
"Oracle's purported Grid enablement in 10g is based on its Oracle Real Application Clusters (RAC) technology that is no more than a local cluster. RAC is a local cluster of computers with no geographic distribution capabilities. This marketing campaign relabeled existing features to exploit current industry trends. "
My question is how can I support the above paragraph? I would like to known more reasons about why oracle grid is a local cluster instead of grid computring oriented.
Thanks in advance.
Hernán.
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Oct 19, 2015
I have the following a computing column
(isnull(TotalProductSaleCost,0) * 7) / 100
I would like the output to be formatted to decimal (12, 2) not sure how to achieve this?
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May 18, 2007
I am new to SSRS, so perhaps its a trivial question. I was wondering that since all controls have names in the report, is it possible to programatically access values of different textboxes, do some computation and then assign to another text box? I know how to do it using the Aggregate functions and operators, but am not sure if I can access values from textboxes within two different tables and assign the computed value to a third text box on the page (not belonging to any table or other control).
somethig like.... txtTotal.Value = FormatCurrency(txtSalesTotal.Value) - txtDiscount.Value));
Any ideas??
DNG.
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Apr 22, 2008
Hello,I am in the process of making a very simple stats page that will show us how many tasks we've completed. Here is what I have so far: Here is the SQL that makes it work: SelectCommand="SELECT Count(TicketID), Category FROM Tickets GROUP BY Category ORDER BY Count(TicketID) DESC ">My problem is with how the totals seem to go on forever. Instead of being in proportion to each other as a percentage of a the total amount of tickets.. they just increase in size with each additonal entry. Can someone help me restructure this so that I can calculate the totals individually and as a whole and then apply the totals to create a proportional bar graph?Thank you greatly for your help,Mark
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Nov 2, 2007
I have a client program that writes to sql server database 10 records per second . i want to compute the CPU usage and the memory usage for the whole program or CPU usage,memory usage for the insert statement in the program .
Can anybody help me with this?
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Dec 16, 1999
I need to store a user ID of whoever made the last change to a record in a table. I have added a field with a default set to 'suser_sid()'.
Is it wise to store SID's in a database table if you are using NT authentication? My concerns are that if the user is deleted by the NT system administrator then I lose data integrety also if the database is backed up and restored onto a different machine with different users it won't work at all.
I'd be grateful for any help with this.
Rich
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Jan 24, 2007
Hi, can someone help me with this problem. I have recently downloaded VWD and have been playing around with it a bit. I was windering how do I add an image file to a SQL database. I have used SQL in the past but I have never store an image in it. I can add text data and so forth, but I need some pointers into adding images to the sql database. I want to be able to store the images and then retrieve them to a GridView. I have the images in an image folder within the website, but I do not know how to input the reference or link to the images in an sql table.
A quick example, say I have a table called Images, with the following info:imgID (int)imgDesc (varchar(max)imgFile (img)imgTitle (varchar(20))
To input this in sql I would write Insert Into Images (imgDesc,imgFile,imgTitle) Values ("Large fishy", "", "The Big Fish") what would I need to put for imgFile?
I would really appreciate if someone can point me in the right direction.
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Feb 21, 2007
hi all, what sql data type should i use to store variable length bit patterns no longer than 30 bits?
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Jul 17, 2007
Hi all! I am back with a new problem.
I am designing a database in which the booking is on an hourly basis instead of daily basis. So I want my colums in a table to be like this:
================================ID(PK)Date(In this table I want date only)TimeSlot(in this table I want time only)CourtNo(facility which is to be booked)Booking ID(FK to booking table)================================
The thing is that SQL server donot have a date only format. I am totally stuck on this one, please help! The database which I created will be ideal if I can just store the date!
Regards,
Taimoor
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Dec 16, 2007
Hi whats the best way to store an image in SQL, for instance the image of a product, bearing in mind the website will be hosted by a hosting company.
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Mar 19, 2008
Hi All,Does anybody know how i can store a paragraph with spaces, newline, empty lines in a sql server 2005 database table? What data type should i declare the table entry to take? I will also like to retrieve the data with what ever i would have stored it with.
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Oct 20, 2004
My forms are taking user input, then HtmlEncoding them prior to being stored in the SQL DB. For some reason, SQL is storing quotes as � and it is causing the HTML when decoded in the page to not be rendered properly.
Has anyone come across this issue before?
For example (without encoding for readability):
SQL should store the parsed string as: <a href="someurl" class="main">
but for some reason it's being stored as: <a href=�someurl� class=�main�>.
Thoughts?
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Jan 16, 2001
Does anyone have thoughts or know of resources that explain the pro's and con's of storing images in a database versus keeping the image in the file system and just storing the path to the image in the database?
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Jun 7, 1999
Hello All!
Can some one give SQL Statement on storing images from disk to the database columns.
Once I store the image how do I test it out that the image is stored correctly?
For example this is what I did
I have a table called table1., field called name
insert into table1(name) values(C:123.bmp)
Is the above statement correct? will it store the file or not?
if it does store them then how do I view them?
Can some one please help me...
Thanks in advance for your help
Venkat
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Jun 20, 2006
Hi again.
How do I store in SQL SERVER with 2 decimal places?
I set Data Type to Decimal with Scale set to 4 and Precision 19. But this doesn't work.
Any ideas? Thanks.
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Mar 28, 2005
Which datatype supports miliseconds?
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Jul 16, 2006
CREATE TABLE [dbo].[blogs] (
[blog_title] [nvarchar] (500) ,
[blog_desc_full] [varchar] (8000) ,
[blogger_name] [nvarchar] (100) ,
[mailid] [nvarchar] (100) ,
[blogid] [numeric](10, 0) IDENTITY (1, 1) NOT NULL ,
[blog_desc] [nvarchar] (125) ,
[cat_name] [varchar] (100) ,
[b_url] [varchar] (250) ,
[b_date] [datetime] NULL ,
[author] [nvarchar] (250) ,
[approval] [char] (1)
) ON [PRIMARY]
GO
using this script i have created my blog table.
and a procedure given below. i am using to insert data in it.
CREATE PROCEDURE SP_BlogAdd
@blog_title nvarchar(500),
@blog_desc_full varchar(8000),
@blogger_name nvarchar(100),
@mailid nvarchar(100),
@blog_desc nvarchar(125),
@cat_name varchar(100),
@b_url varchar(250),
@author nvarchar(250)
AS
INSERT INTO blogs(blog_title, blog_desc_full, blogger_name, mailid, blog_desc, cat_name, b_url,author)
VALUES(@blog_title ,@blog_desc_full ,@blogger_name,@mailid ,@blog_desc ,@cat_name ,@b_url,@author)
GO
now, the problem i m facing is.
i am using varchar datatype for [blog_desc_full] [varchar] (8000).
i want more than this size to store data in it.
please give me some detailed code.
i tried text datatype but i didnt succeed. how to use text datatype.
i replaced with text datatype.but in length i couldnt type. it shows only 16.
Please help me out.
regards,
ASIF
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Jul 20, 2012
best way to store questionnaire data in a database.Since different questionnairs have different questions and formats i.e dropdown, radio, checkboxes etc building such a database model becomes highly complex.
I've read that if data schema is complex and higly variable it may be better to use an xml document and store that in a databse. However I dont quite understand how you store xml to a database. Do you simply store the entire structure in something like a nvarchar column or is there some other way to store xml to a database.
If you store the entire structure to the databse then how do you query the content to generate reports.
example xml:
Code:
<survey>
<meta>
<id>sample</id>
</meta>
<questions>
<question id="1" type="singlechoice" page="1">
[code]...
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Mar 17, 2004
I use SQL 2K with an Access 2000 project as front end. I have four date fields in a table. The first one should contain a date (eg 20th of February), the second one a starting hour (eg 8:00h), the third one the finishing hour (eg 10:00h) and the fourth should calculate the difference between the second and third column.
So I created four datetime fields. Storing a date in the first column is no problem, but storing only hours doesn't seem to do what I want. When I enter 8:00 from within the Access, it is stored 1/1/1900 8:00 in SQL Server. How can I make sure that the hours are saved with the date of the second column, so either as 8:00 without further information or as eg 20-2-2004 8:00?
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Apr 6, 2004
Hello Friends,
How to store newline charecters in sqlserver db. Iam implementing a varchar type attribute.
Regards,
Ch.Praveen
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May 21, 2004
how can i store time in my table
1 hr:55 mins:22 secs
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