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  • Store an image in a SQL Server CE database

    - by Vaccano
    Does any one know of an example on how to store an image in a SQL Server CE database? What data type should the column be? (I am guessing binary.) I use Linq-To-Datasets. Is it possible using that to put the image into the database and pull it out again later? Thanks for any advice.

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  • in R, question about generate table

    - by alex
    a = matrix(1:25,5,5) B = capture.output(for (X in 1:5){ A = c(min(a[,X]),quantile(a[,X],0.25),median(a[,X]),quantile(a[,X],0.75),max(a[,X]),mean(a[,X]),sd(a[,X])/m^(1/2),var(a[,X])) cat(A,"\n") }) matrix(B,8,5) what i was trying to do is to generate a table which each column has those element in A and in that order. i try to use the matrix, but seems like it dont reli work here...can anyone help 1 2 3 4 5 min 1st quartile median SEM VAR THIS IS WHAT I WANT THE TABLE LOOKS LIKE ..

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  • Need help converting SQL to EF4 please

    - by Ken Eldridge
    I need help converting this SQL statement, into EF4: Select Posts.PostID, Post, Comment from Posts left join Comments on posts.PostID = Comments.PostID Where CommentID not in ( Select PostID from Votes where VoteTypeID = 4 --4 = flagged comment type ) In my database, the Votes table stores either the PostID of reported posts, or CommentID of reported comments in the column Votes.PostID Thanks in advance!

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  • The internal implementation of R's dataset

    - by Yin Zhu
    I am trying to build a data processing program. Currently I use a double matrix to represent the data table, each row is an instance, each column represents a feature. I also have an extra vector as the target value for each instance, it is of double type for regression, it is of integer for classification. I want to make it more general. I am wondering how what kind of structure R uses to store a dataset, i.e. the internal implementation in R.

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  • ASP.NET site errors output nothing on the page.

    - by d1k_is
    OK, i have been doing some work modding a pre-compiled ASP.NET application (VB codebehind) but i have come across something i have never seen before. When ever theres an error on the loading of a page, the page outputs nothing (no error message, no error message, nothing at all) firefox displays this error: XML Parsing Error: no element found Location: http://site.local/Checkout.aspx Line Number 1, Column 1: Because there is no html output. Is there some sort of setting that im missing that makes IIS/ASP.NET function like this?

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  • How to perform a select using a WHERE NOT EXISTS

    - by Peter Bridger
    I'm using LINQ2SQL and I want to compare two tables and select all rows that are missing from one tables (based upon one of the column values). In standard SQL I would write this as: SELECT FirstName, LastName, RefId, Email FROM Users_ActiveDirectory AS ADU WHERE NOT EXISTS ( SELECT U.RefId FROM Users AS U WHERE U.RefID = ADU.RefId ) However I'm not sure how to achieve the same result using LINQ2SQL?

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  • how to declare datetime datatype in mysql in a normal pojo class

    - by Rajesh
    How to declare datetime datatype in normal java class Example: I have one SampleUser table, in that for UpdateDate column I declare datatype as datetime, for this table I need to create a pojo class, so how I have declare datetime datatype in Java-bean ?? class User { /* shall we use java.sql.Timestamp for **UpdateDate** field........? */ private Timestamp updateDate; } this Syntax is correct??

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  • How to delete from table if count is greater than 20

    - by joseph
    Hi, I have a mysql table that I need to only contain 20 newest records before adding additional records. New rows are added daily so I would like it first delete any records that are greater than the 20 allowed starting with the earliest. The table contains an auto increment "id" column so I can easily determine which is the earliest records. Thanks for any help.

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  • Sql server 2000 -Space find

    - by Adu
    This is Query: CREATE TABLE #TempTable(datasize varchar(200)) INSERT #TempTable EXEC sp_spaceused 'Table1' When executing this query error message shown as below "Column name or number of supplied values does not match table definition" How can i solve this problem?

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  • Jquery's a FREE grid display

    - by mmcgrail
    I have been using Flesigrid for my CMS and I like it except there are some things I think it could do better like get the column headers from the ajax results rather then in the setup of the flexigrid or having the ability to change the buttons on reload things of that nature. I've been considering a mod of the plugin though I'm not sure i really want to do that. But the question is ... is there something that might be better that I somehow missed when I was looking for grid display ?

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  • Is it possible to write a database view that encompasses one-to-many relationships?

    - by Brandon Linton
    So I'm not necessarily saying this is even a good idea if it were possible, since the schema of the view would be extremely volatile, but is there any way to represent a has-many relationship in a single view? For example, let's say I have a customer that can have any number of addresses in the database. Is there any way to list out each column of each address with perhaps a number as a part of the alias (e.g., columns like Customer Id, Name, Address_Street_1, Address_Street_2, etc)? Thanks!

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  • Can TFS workspaces be used without being tied to a specific machine?

    - by GWLlosa
    So I've got a situation where we have a project with 10 developers. Each developer, when they come in for the day, is randomly issued a machine to use for development that day. The machine names are different, say DEV01 - DEV10. At the time that they are issued to the developers, the machines are identical, and no changes the developers make during the day are persisted on the machines (source code changes are stored in TFS, not locally). These are of course actually virtual machines, but that's not really relevant to the point at hand. The problem is that each morning, the developers run into 3 issues: 1) The machine that they are assigned may not be the same machine they were last assigned to. For example, DevMan A might have used DEV04 yesterday, and received DEV06 today. His workspace definitions are now tied to DEV06; he must create a new workspace, or migrate the old workspace to DEV04. 2) The machine that they are assigned may have been in use yesterday, and some of the mappings may conflict. For example, DevMan A might have DEV04 today, and wish to create a workspace mapping the project folder to "C:\MyProj\Solution". However, DevMan B had DEV04 yesterday, and he used the same project folder. TFS now complains. 3) This may be the first time they are on a given machine. They now need to recreate for this machine all of their source-control mappings for the new machine. All of these issues can be resolved in a straightforward fashion on a case-by-case basis, but it does sap some productivity from the morning. We'd much prefer if the TFS workspace definitions could be 'relaxed', such that they did not include the machine name in the definition somehow. Barring that, if anyone is aware of a solution to the above problems that can run automatically, or with limited user intervention, that would also be ideal.

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  • How to write this query in Linq2Sql

    - by RememberME
    I have a table company which holds the company_id, company_name and other details. I have a table subcontracts which has a company_id column that maps to company.company_id. How can I write a select statement to get all companies which have not been assigned to a subcontract? IE The company_id cannot be found in subcontracts.company_id

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  • Can I raise System Error in sql Server in a stored procedure.

    - by Shantanu Gupta
    I am writing a stored procedure where i m using try catch block. Now i have a unique column in a table. When i try to insert duplicate value it throws exception with exception no 2627. I want this to be done like this if (exists(select * from tblABC where col1='value')=true) raiseError(2627)--raise system error that would have thrown if i would have used insert query to insert duplicate value And which method will be better, using insert query or checking for duplicate value before insertion using Select query ?

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  • How to get the width of a string in pixels?

    - by MA1
    I am using wxPython's HyperTreeList and I want to set the column width exactly equal to length of the largest string in it. To accomplish that, I'd like to to convert a python string size into pixels. For Example: If we have a string like str = "python" len(str) = 6 How could I convert the above string length/size into pixels? Is there another way?

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  • Does SQL Server have any kind of magic undo feature?

    - by Andrew G. Johnson
    Long story short is I tried to quickly update a single row in SQL Server using the Management studio and just typed UPDATE table SET column='value' and forgot the WHERE other_column='other_value' portion. Went for lunch, came back and theres 15 unread emails waiting for me. Happened about an hour ago, waiting for the database guy to come back to see when the last backup was. There's no magic UNDO feature though is there?

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