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• Passing a complex object to a page while navigating in a WP7 Silverlight application

  - by Andreas Grech

  I have been using the NavigationService's Navigate method to navigate to other pages in my WP7 Silverlight app: NavigationService.Navigate(new Uri("/Somepage.xaml?val=dreas", UriKind.Relative)); From Somepage.xaml, I then retrieve the query string parameters as follows: string val; NavigationContext.QueryString.TryGetValue("val", out val); I now need a way to pass a complex object using a similar manner. How can I do this without having to serialize the object every time I need to pass it to a new page?

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• Quering computed fields in GORM

  - by Tihom

  I am trying to query the following HQL using GORM: MailMessage.executeQuery("toId, count(toId) from (SELECT toId, threadId FROM MailMessage as m WHERE receiveStatus = '$u' GROUP BY threadId, toId) as x group by x.toId") The problem is that count(toId) is a computed field doesn't exist in MailMessage and that I am using a subquery. I get the following error: java.lang.IllegalArgumentException: node to traverse cannot be null! Ideally, I would like to use a generic executeQuery which will return data of anytype. Is there such a thing?

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• Good way to deal with comma seperated values in oracle

  - by dmitry

  I am getting passed comma seperated values to a stored procedure in oracle. I want to treat these values as a table so that I can use them in a query like: select * from tabl_a where column_b in (<csv values passed in>) What is the best way to do this in 11g? Right now we are looping through these one by one and inserting them into a gtt which I think is ineffecient. Any pointers?

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• Order by Domain Extension Name using CodeIgniter Active Record Class

  - by allan

  $extension = “SUBSTRING_INDEX(domain_name, ‘.’, -1)”; $this->db->order_by($extension, “asc”); It says: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘asc LIMIT 50’ at line 44 But its working when I didn’t used the $this-db-order_by Active Record Class such as this one: $this-db-query(“SELECT * FROM domain ORDER BY SUBSTRING_INDEX(domain_name, ‘.’, -1)”); Anyone please help me. Thanks.

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• Select a column returned by a stored procedure

  - by vaibhav

  I have a stored procedure which is returning me about 50 columns. I want to write a query, where I will be able to select a particular column from the list of column returned by the SP. I tried writing select RSA_ID from exec(uspRisksEditSelect '1') But Its throwing me an error. I think we need to write some dynamic sql for it. But I am new to it.

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• What is the recommended way to set GET parameters on a Restlet request?

  - by Simon Nickerson

  What is the recommended way of setting GET query parameters on a Restlet Request object? I think I can see how to get them out of the request using getQueryAsForm(), but how do they get set in the first place? At the moment, I am adding them manually to the URL using a StringBuilder and java.net.URLEncoder, but it seems like there should be a better way.

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• node to traverse cannot be null (Hibernate SQL)

  - by tiswas

  I'm performing a SQL query through hibernate, which looks like: SELECT thi FROM track_history_items thi JOIN artists art ON thi.artist_id = art.id WHERE thi.type = "TrackBroadcast" GROUP BY art.name ORDER thi.createdAt DESC but I'm getting the message that 'Node to traverse cannot be null!'. Anyone know what could be causing this? --EDIT-- I'm pretty sure that this problem is being caused by the possibility of artist_id to be null. However, I can't prevent this, so can I just skip the rows track_history_item rows which have a null artist_id?

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• return a single list property List in Linq

  - by bharat

  I am having an issue here i have a list this.Ddown having 3 properties i want to write a Linq Query to return one of the property lets say i have property a,b,c i want to retutn list(c) how do i do that in linq

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• ASP.NET How to save and use persistent information depending on user type login

  - by pee2002

  Hi there! I´m building a website and i need to store somehow some informations that i will use in the whole site depending of the user type logged in. Example: 1) User XPTO logs in 2) Query DataBase to see where he belongs 3) Store those 2 or 3 fields that i will get in Database in a persistent way to use it in the whole site. My question is: Whats the best practices to do this? Best Regards

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• SQL: How to order values inside group by

  - by Denis Yaremov

  Consider the following MS SQL Server table: ID | X | Y ------+-------+------- 1 | 1 | 1 2 | 1 | 2 3 | 1 | 3 4 | 2 | 40 5 | 2 | 500 6 | 3 | 1 7 | 3 | 100 8 | 3 | 10 I need to select the ID of the row that has the maximum value of Y grouped by x, i.e: ID | X | Y ------+-------+------- 3 | 1 | 3 5 | 2 | 500 7 | 3 | 100 The query will be nested several times so an optimal performance solution is required... Thank you!

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• dojo.connect with dynamic content

  - by peirix

  Is there something similar to jQuery's live()-method in dojo? I have some content that's being loaded with ajax, and need that content to get the same event connections. dojo.query(".allTheseElements").connect("onclick", function() { /***/ } And then have the dynamically loaded content fire on this too.

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• Perl -check for uninitialized value

  - by benjamin button

  I am doing the below in a perl script: my @pm1_CS_missing_months = `sqlplus -s $connstr \@DLmissing_months.sql`; it takes the output of an sql query. if i have to check for no rows selected,how could i do it? i want to do like this: if(no rows selected) { do this; }

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• Which of these queries is preferable?

  - by bread

  I've written the same query as a subquery and a self-join. Is there any obvious argument for one over the other here? SUBQUERY: SELECT prod_id, prod_name FROM products WHERE vend_id = (SELECT vend_id FROM products WHERE prod_id = ‘DTNTR’); SELF-JOIN: SELECT p1.prod_id, p1.prod_name FROM products p1, products p2 WHERE p1.vend_id = p2.vend_id AND p2.prod_id = ‘DTNTR’;

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• How to specify blob type in MS Access?

  - by Firat

  How to specify blob type in MS Access? I have office 2007 installed. I am using jdbc, but this should not matter for the SQL query I am passing. Tried to pass a length to it, or FILE type, did not help. CREATE TABLE mytable ( [integer] INTEGER not null, [string] VARCHAR (255), [datetime] DATETIME, [boolean] BIT, [char] CHAR, [short] SHORT, [double] DOUBLE, [float] FLOAT, [long] LONG, [blob] BLOB, // does not work Primary Key ([integer]) )

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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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• Is there any library to represent SQL queries as objects in Java code?

  - by Pregzt

  I was wondering if there is any library that can be used to represent SQL queries as objects in Java. In the code I have plenty of static variables of type java.lang.String that are hand written SQL queries. I would be looking for library having a nice fluent API that allows me to represent the queries as objects rather than strings. Example: Query q = select("DATE", "QUOTE") .from("STOCKMARKET") .where(eq("CORP", "?")) .orderBy("DATE", DESC);

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• MySQL INSERT and SELECT Order of precedence

  - by Carlos Dubus

  Hi, if an INSERT and a SELECT are done simultaneously on a mysql table which one will go first? Example: Suppose "users" table row count is 0. Then this two queries are run at the same time (assume it's at the same mili/micro second): INSERT into users (id) values (1) and SELECT COUNT(*) from users Will the last query return 0 or 1?

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• Python what's the data structure for triple data

  - by Paul

  I've got a set of data that has three attributes, say A, B, and C, where A is kind of the index (i.e., A is used to look up the other two attributes.) What would be the best data structure for such data? I used two dictionaries, with A as the index of each. However, there's key errors when the query to the data doesn't match any instance of A.

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• Split string with delimiter in sql server

  - by Renju

  I'm having a coloumn name with varchar field that holds some folder path like "C:\Program Files\Internet Explorer\en-US" .I need to update the root folder name(Program files to profilesNew).Can anyone please help. I tried with a query declare @val as varchar(100) set @val='C:\Program Files\Internet Explorer\en-US' select substring(@val,charindex(':\',@val),charindex('\',@val)) but not getting the exact answer C:\Program FilesNew\Internet Explorer\en-US

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• How can I use the "Select" statment from a table with a name that contains blankspaces?

  - by yelinna

  When using this SQL query: "Select * from table_name" what happens if the name of the table contains blankspaces? Is there an special SQL sintax for selecting a table with a name such as "Author Code"?

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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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• How should I architect JasperReports with a PHP front+backend system

  - by Itay Moav

  Our system is written completely in PHP. For various business reasons (which are a given) I need to build the reports of the system using JasperReports. What architecture should I use? Should I put the Jasper as a stand alone server (if possible) and let the php query against it, should I have it generate the reports with a cron, and then let the PHP scoop up the files and send them to the web client/browser...

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• XPath select tags by id not descendants of

  - by Stefano

  I have the following code and I have to select all the nodes with id="text" but not the nodes that already have a parent with id="text": test00 test01 test02 * test03 * so in this example the query have to return only the two fo:block with content test00 and test03. Thank you.

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• how to write the array into the sqlite database for objective-c ?

  - by uttam

  i have taken the data from databse into array now i want it to send it back into database by using the insert query. how can i insert the array of the data into the database.

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• I simple search controller that stores search history, should I use resource routing or non-resource?

  - by vfilby

  I am learning rails and am toying with a simple web-app that integrates with flickr to search photos based on user given criteria and store the query in a search history table. I am seeking the best or 'rails' way of handling this. Should I setup a controller and non-resource routes that handle the search and store the data in a custom table; or should I create a resource for queries with a resource route and an additional path for search?

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