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• JPA query many to one association

  - by Random Joe

  I want to build the following pseudo query Select a From APDU a where a.group.id= :id group is a field in APDU class of the type APDUGroup.class. I just want to get a list of APDUs based on APDUGroup's id. How do i do that using a standard JPA query?

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• What is this hacker trying to do?

  - by JW

  If you do a search for: http://www.google.co.uk/search?q=0x57414954464F522044454C4159202730303A30303A313527&hl=en&start=30&sa=N you will see a lot of examples of an attempted hack along the lines of: 1) declare @q varchar(8000) select @q = 0x57414954464F522044454C4159202730303A30303A313527 exec(@q) -- What is exactly is it trying to do? Which db is it trying to work on? Do you know of any advisories about this?

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• Easy C library to access MySQL

  - by Pyrite

  Any suggestions for a real simple C library to query a single MySQL table, nothing fancy here. Just doing a single select * from a table. Any help is appreciated.

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• Hibernate using OneToOne

  - by Soft

  I have two tables tab1 { col1 (PK), col2, col3 } tab2 { col1, col2(PK), col3 } I am using Hibernate annotation for joining using "OneToOne" I have the below Hibernate class for tab1 class tab1 { @OneToOne @JoinColumn(name = "col2", referencedColumnName = "col1") private tab2 t2; } i was expecting to run the below sql select * from tab1 t1, tab2 t2 where t1.col1 = t2.col2 But it is not working as i expected.Please help

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• How do I update a column in 3rd row the same as a column in 2nd row in MySQL?

  - by user198729

  I'm doing it this way,but get an error: mysql> update products set products_image=(select products_image from products where products_id=2) where products_id=3; ERROR 1093 (HY000): You can't specify target table 'products' for update in FROM clause

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• "preprocess current file" addin for Visual Studio? (C++ )

  - by Virgil

  I realize that Visual Studio has the "/P" option to generate preprocessed files, but it's extremely inconvenient. I'm looking for an addin that allows you to right-click on a file and select "view preprocessed" - or any similar solution that would basically preprocess the currently-open file (with the appropriate options from the current configuration) and show me the output, with no extra hassle. Does such a thing exist?

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• MS access refusing to combine two tables?

  - by Mahmoud

  hey everyone i have an access 2007 database where i have 2 tables one is exp_cash and exp_cheque each are link to exp_cat, where exp_cat contains categories list where exp_cash contains id,cat_id,exp_date,exp_amount,exp_note same thing in exp_cheque where when i came to combine them nothing in result unless i remove the cat_name from my query i used a simple query which is SELECT DISTINCT exp_cat.cat_name, exp_cash.exp_amount, exp_cheque.exp_amount FROM (exp_cat INNER JOIN exp_cash ON exp_cat.ID = exp_cash.exp_cat_id) INNER JOIN exp_cheque ON exp_cat.ID = exp_cheque.exp_cat_id;

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• Setting a variable for a Z SQL method

  - by Nathan Friend

  In Plone I have a Z SQL methood: SELECT [aapp_qtitle] ,[aapp_mtitle] ,[aapp_sdate] ,[aapp_duration] FROM [AAPP].[dbo].[M_PageBodyElement] where [aapp_id]=<dtml-sqlvar aapp_id type=int> How can I set the value of aapp_id in my Plone page code?

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• how to combine the related version in group by

  - by randeepsp

  select count(a),b,c from APPLE join MANGO on (APPLE.link=MANGO.link) join ORANGE on (APPLE.link=ORANGE.link) where id='camel' group by b,c; the column b gives values like 1.0 1.0,R 1.0,B 2.0 2.0,B 2.0,R 3.0,C 3.0,R is there a way to modify the above quer so that all 1.0 and 1.0,R and 1.0,B are merged as 1.0 and 2.0,2.0,B are merged as 2.0 and same way for 3.0 and 4.0

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• Language drop-down selector.

  - by Klezmorim

  I want to be able to create a drop-down select box based on the languages my website supports. I can't seem to find a component in Wicket that does this out-of-the-box. How can I do this?

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• displaying sql exception in JSF

  - by user234194

  I was wondering how would I be able to show SQL errors generated during update, delete, select * etc in JSF. Any help would be appreciated.

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• Windows layout : see the navigator

  - by Istao

  Hi, In netbeans I should want a layout like the second in this page : http://wiki.netbeans.org/WinsysLayoutFor65 The navigator is in bottom, left side. I can't do that. If I select menu Window/Navigating/Navigator, the navigators appears in the middle panel. If I drag drop it, it goes in left, or in bottom, but never in bottom left. How is it possible to put it in bottom left ? Thanks.

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• SQL, combining the result

  - by Newbie

  I am using Access and have this SQL SELECT land.id, land.official_name, vaksiner.vaksiner FROM land INNER JOIN (vaksiner INNER JOIN land_sykdom ON vaksiner.id = land_sykdom.sykdom) ON land.kort = land_sykdom.land ORDER BY land.official_name The SQL gives me a result like this: id official_name vaksiner 1 a A 1 a C 2 b A 2 b B 2 b C But I want to combine the result so that it looks like this: id official_name vaksiner 1 a A, C 2 b A, B, C

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• Converting SQL Query to LINQ 2 SQL expression

  - by Shyju

  How can i rewrite the below SQL query to its equivalent LINQ 2 SQL expression (both in C# and VB.NET) SELECT t1.itemnmbr, t1.locncode,t1.bin,t2.Total FROM IV00200 t1 (NOLOCK) INNER JOIN IV00112 t2 (NOLOCK) ON t1.itemnmbr = t2.itemnmbr AND t1.bin = t2.bin AND t1.bin = 'MU7I336A80'

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• can this simple SQL query be optimized?

  - by ibiza

  Hi, I have the following query : SELECT COUNT(*) FROM Address adr INNER JOIN Auditable a on adr.UniqueId = a.UniqueId on a big DB (1.3M adresses, 4M+ auditables) both UniqueId columns are clustered primary keys the query is taking quite long to complete...I feel dumb, but is there any way to optimize it? I want to count all the address entries that have an underlying auditable... thanks!

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• nested join linq-to-sql queries

  - by ile

  var result = ( from contact in db.Contacts where contact.ContactID == id join referContactID in db.ContactRefferedBies on contact.ContactID equals referContactID.ContactID join referContactName in db.Contacts on contact.ContactID equals referContactID.ContactID orderby contact.ContactID descending select new ContactReferredByView { ContactReferredByID = referContactID.ContactReferredByID, ContactReferredByName = referContactName.FirstName + " " + referContactName.LastName }).Single(); Problem is in this line: join referContactName in db.Contacts on contact.ContactID equals referContactID.ContactID where referContactID.ContactID is called from the above join line. How to nest these two joins? Thanks in advance! Ile

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• Delphi's "Object TreeView" equivalent in Visual Studio 2010

  - by user327359

  I'm just getting started in Visual Studio 2010 and I'm coming from Delphi 7. In Visual Studio 2010, what is the equivalent to Delphi's Object TreeView? Or to ask it another way, in Visual Studio 2010, during WinForm Gui development, how do you navigate your Gui hierarchically? If I have, say, a bunch of Panels with some of them inside of others and some Docked to Client, how can I directly select a specific Panel?

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• Linux: is here a read or recv from socket with timeout?

  - by osgx

  Hello How can I try to read data from socket with timeout? I know, select, pselect, poll, has a timeout field, but using of them disables "tcp fast-path" in tcp reno stack. The only idea I have is to use recv(fd, ..., MSG_DONTWAIT) in a loop

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• SQL - How to display the students with the same age?

  - by Cristian

  the code I wrote only tells me how many students have the same age. I want their names too... SELECT YEAR(CURRENT DATE-DATEOFBIRTH) AS AGE, COUNT(*) AS HOWMANY FROM STUDENTS GROUP BY YEAR(CURRENT DATE-DATEOFBIRTH); this returns something like this: AGE HOWMANY --- ------- 21 3 30 5 Thank you. TABLE STUDENTS COLUMNS: StudentID (primary key), Name(varchar), Firstname(varchar), Dateofbirth(varchar) I was thinking of maybe using the code above and somewhere add the function concat that will put the stundents' names on the same row as in

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• case in group by in a store procedure

  - by Luca Romagnoli

  is possible do a case in a group by? similar to this: select * from table GROUP BY CASE WHEN @Attivita=0 THEN (RANK() OVER (GROUP BY Nome,AccountID,Matricola DESC)) END thanks

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• String to Integer with JDBC /ODBC sql .

  - by user303730

  I am facing severe problem with JDBC ,converting string to integer. String query = "Select F2, F3, F4 from myTable ORDER BY {fn CONVERT(INT,F4)}" ; error: Syntax error in ORDER By clause;

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• Selecting multiple cached elements

  - by Globalz

  In jQuery you can select two elements by id like: $('#elem, #elem2'); BUT What if you have cached the elem and elem2, and what to apply the same method/function to them both? i.e. $elem = $('#elem'); $elem2 = $('#elem2'); This obviously wont work: $($elem, $elem2) Thanks!

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• Custom Drop Down box in Ruby on Rails with links as a couple of the options.

  - by DerNalia

  So...basically, I want this in my drop down: •Nothing •Option 1 •Option 2 •Option 3 Link to another page Link to another page I tried throwing a link_to to a select tag... that didnt work... any ideas?

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• How does the where clause in MySQL work ?

  - by Eternal Learner

  I have a doubt. Assume R and S are 2 relations with attributes A and B respectively . If I have a query Select * From R, S Where R.A = S.B Does this work like a double For Loop in say c or c++ For( i=0; i<n; i++) For( j=0; j<n; j++) if (i == j) //DO some work

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• sharepoit performance counter instance name with [ACL]

  - by intangible02

  Select a Sharepoint performance counter object, there are two instances for each of my web site. For example, for the ssp site, the two instance are named as portnumber_ssp_admin portnumber_ssp_admin[ACL] What is the difference between the two instances? What is the meaning of [ACL]?

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