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• Insert hex string value to sql server binary field is appending extra 0

  - by rotary_engine

  Have a binary field and want to insert into this from a hex string: insert into binaryTable(binaryField) values(convert(varbinary(max), 0x0)) however when I run select the value is return with an extra 0 as 0x00 This extra 0 is causing a problem in another application, I dont want it. Interesting, is if I do a select on an existing value and it returns say 0x55 then inserting this same value using the above query will return a select of 0x055. How to stop the extra 0 being added?

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• Does column ordering in databases affect performance?

  - by Rhubarb

  I am using Django with MySql. I have a CharField with max length of 64 as the 2nd to last column, and a Boolean as the last column. Will reversing the order of these provide better optimization of space?

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• [Zend Framework] How to create Zend_Db_Select with nested queries?

  - by rasouza

  I don't know if its possible but I'd like to make it a Zend_Db_Select object and I don't know how SELECT * FROM MyTable MT1 WHERE MT1.date = ( SELECT MAX(MT2.date) FROM MyTable MT2 )

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• What's the easy way to test for 304 reponses?

  - by John Mee

  I need to test if my 304 responses are working, but my development environment is pretty hard set on force no-cache. Is there an easy way to modify the max-age value of the cache-control header before it goes out? I'm perhaps a bit optimistic in hoping chrome (or an extension, or FF) has a console command letting me alter the if-modified-since header then send the request. Maybe paste something into a telnet connection?

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• Elegant ruby syntax to return the greater of two objects

  - by doctororange

  Of course there are a thousand ways to get this done, but is the simplest (or most elegant) way to achieve this? [4,8].max That's actually not too shabby, but what would you do?

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• How to get size of file uploaded to SQL-Server?

  - by MadBoy

  Is there a way to tell how to get a file size that is uploaded to database? SELECT [ID] ,[File] FROM [dbo].[Reports] I would like to be able to tell user the size of File which is VarBinary(max) field in MS SQL 2005/2008. How to do that? Maybe the only way to do is to create another column and when inserting file i should also insert it's size in additional column?

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• How can I get file size in Perl before processing upload request?

  - by zeina

  I want to get file size I'm doing this: my $filename=$query->param("upload_file"); my $filesize = (-s $filename); print "Size: $filesize ";` Yet it is not working. Note that I did not upload the file. I want to check its size before uploading it. So to limit it to max of 1 MB.

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• limit number of images in a row?

  - by Mahmoud

  Hey All i have a image gallery and i want to limit the set where is shows 4 images in each row at a max of 3 columns, if its possible how is it made, and well it be easy using php,

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• How can I get file size in perl before uploading it?

  - by zeina

  I want to get file size I'm doing this: my $filename=$query->param("upload_file"); my $filesize = (-s $filename) ; print "Size: $filesize "; Yet it is not working.Note that I did not upload the file. I want to check its size before uploading it. so to limit it to max of 1 MB.

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• Open plan office annoyance

  - by arturito

  Not a technical question, but related to IT. At the moment I work in the open plan office and the guy next to me is talking to himself while programming. It annoys my collegue and me so much that we are putting the earphones on with music volume set to max. Does anyone know good and polite solution to shut him up?

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• What would be the datastructure in following scenario? (Stack with maximum)

  - by Abhishek Jain

  Please note that there is no limitation of memory. I need to insert int from 1 to 1000. I can do the each of the following operations in constant order of time: push():adds to the top pop():removes the top element getMax(): returns the max element Please suggest me appropriate datastructure.

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• XNA, subtract 2 meshes at runtime?

  - by OSaad

  Hi, i wanted to know how to edit 3d models' vertices in XNA at runtime, i wana do something like the 3d max subtract feature where u put 2 models together and delete the intersecting vertices of 1 of them, more like carving one mesh with the other. see this if i wasn't clear anyway so any pointers on how to edit vertices at runtime or any help is really really appreciated. thanks

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• running query and putting result into a variable ACCESS

  - by every_answer_gets_a_point

  i am running a query from vba editor access: "select max(somerow) from sometable" i want to put the result of this query into a variable. how do i do it?

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• How to select a random record from a MySQL database?

  - by Bruce

  I am using the following query to select 1 random record - SELECT name FROM table WHERE id >= (SELECT FLOOR( MAX(id) * RAND()) FROM table ) ORDER BY id LIMIT 1 but it gives me the same set of records every time I call it. How do I get better random record?

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• How to switch from VARCHAR to TEXT in SQL 2000?

  - by MatthewMartin

  What do I need to consider before I switch a bunch of fields from VARCHAR(bignumber) to TEXT? Aside from performance, and sometime in the far future TEXT will be deprecated, and aside from the fact that it looks like I need to drop and recreate the table to alter the column's data type? This is for SQL 2000-- I can't do VARCHAR(max) and VARCHAR(8000) isn't large enough.

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• Details to log when starting an application

  - by Karl

  To help support and anyone who may use one of my applications I tend to log a few things during the application startup. Currently I log: Start Time App Name App Author App Version App Classpath Current working directory Java vendor Java version Max heap size Taking into consideration this application may be used / supported by a whole host of people can anyone think of any other vital details which we / others should log for good practice?

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• merging and manupulating files in matlab

  - by Paul

  Is there a way to run a loop through a folder and process like 30 files for a month and give the average,max of each columns and write in one excel sheet or so?? I have 30 files of size [43200 x 30] I ran a different matlab scrip to generate them so the names are easy File_2010_04_01.xls , File_2010_04_02.xls ..... and so on I cannot merge them as each are 20mbs and matlab would crash. Any ideas? Thanks

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• Will First() perform the OrderBy()?

  - by Martin

  Is there any difference in (asymptotic) performance between Orders.OrderBy(order => order.Date).First() and Orders.Where(order => order.Date == Orders.Max(x => x.Date)); i.e. will First() perform the OrderBy()? I'm guessing no. MSDN says enumerating the collection via foreach och GetEnumerator does but the phrasing does not exclude other extensions.

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• Excel Functions

  - by dwyane

  =MAX(SUM(A1:A5)) How do i incorporate the above formula into =IF( AND( $H$14<F22, F22<=($H$14+$H$15) ), $I$15, IF( AND( $H$14+$H$15<F22, F22<($H$14+$H$15+$H$16) ), $I$16, IF( AND( $H$14+$H$15+$H$16<F22, F22<=($H$14+$H$15+$H$16+$H$17) ), $I$17, $I$14 ) ) ) It keeps running a circular reference error. Help! The sum value shouldnt exceed 150. If exceed, then replace the cell with zero value.

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• TSQL: How can I update the value of an xml tag with the value of an xml tag from another related tab

  - by halfjust

  Hello, How can I update the value of an xml tag with the value of an xml tag from another related table? something like this: UPDATE v2 SET [xml].modify ('replace value of (//TAG1/text())[1] with "CAST(v1.[xml].query(''//TAG2'') AS NVARCHAR(MAX))"') FROM table2 v2, table1 v1 WHERE v2.id = v1.id Thanks

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• oracle using index even though there is no filter criteeria specified

  - by Kaushik

  In this query: SELECT WTTEMPLATE.TEMPLATEuID, MAX (WTTRX.VALUEDATE) AS template_last_use_date FROM wttemplate, wttrx WHERE WTTEMPLATE.TEMPLATEID = WTTRX.TEMPLATEID(+) AND WTTEMPLATE.CUSTID = WTTRX.CUSTID GROUP BY WTTEMPLATE.TEMPLATEuID The explain plan shows:index fast full scan using indexes on WTTEMPLATE.TEMPLATEID and (WTTRX.TEMPLATEID,WTTRX.CUSTID). My question is this: I have not specified any filter criteria , so how can it use indexes? It should do full scan...right?

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• Oracle : select maximum value from different comulms of the same row

  - by gregseth

  The whole question is pretty much in the title. For each row of the table I'd like to select the maximum of a subset of columns. For example, from this table name m1 m2 m3 m4 A 1 2 3 4 B 6 3 4 5 C 1 5 2 1 the result would be name max A 4 B 6 C 5 The query must be compatible oracle 8i. Thanks.

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• Image classification: recognizing various features of many buildings from images

  - by el chief

  so, let's say i have the long/lat or address of many buildings can get satellite images, "street view", and perhaps 3d/perspective views of buildings. want to find: height, number of floors, floor area (max building footprint) of the building. about 200k buildings. Is there a library for recognizing buildings from satellite shots or pictures? Kind of like face detection I suppose. Any other suggestions? Thanks!

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• Convert ten character classification string into four character one in C#

  - by mare

  What's the best way to convert (to hash) a string like 3800290030, which represents an id for a classification into a four character one like 3450 (I need to support at max 9999 classes). The hash needs to be unique and always the same for the same an input. If possible, the hash should also be reversible (but this is not required).

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• RegEx Pattern that matches positive or negative values (e.g "1.2", "-2.8", "7.8", -22.8")

  - by tzippy

  decimal seperator is a dot, followed by max one digit! No range specified. Thanks guys!

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