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• How to get title from a website by xpath?

  - by qxxx

  I am playing around with xpath, but have no Idea how to for example get a title from a website using xpath, here is my code but I don't know what to do next... $dom = new DOMDocument(); $dom->loadHTMLFile("http://www.cool.de"); $x=new DOMXPath($dom); $result = $x->query("//TITLE"); //...??? and print_r($result) shows me only "Object", is there a function like print_r to see what is inside an object so I don't have to guess?

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• Is there any way to modify a column before it is ordered in MySQL?

  - by George Edison

  I have a table with a field value which is a varchar(255). The contents of the field can be quite varied: $1.20 $2994 $56 + tax (This one can be ignored or truncated to $56 if necessary) I have a query constructed: SELECT value FROM unnamed_table ORDER BY value However, this of course uses ASCII string comparison to order the results and does not use any numerical type of comparison. Is there a way to truly order by value without changing the field type to DECIMAL or something else? In other words, can the value field be modified ('$' removed, value converted to decimal) on the fly before the results are sorted?

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• C# mysqlreader on same connection error

  - by dominiquel

  Hi, I must find a way to do this in C#, if possible... I must loop on my folder list (mysql table), and for each folder I instanciate I must do another query, but when I do this it says : "There is already an open DataReader associated with this Connection" and I am inside a mysqlreader loop already. Note that I have oversimplified the code just to show you, the fact is that I must do queries inside a mysqlreader loop, and it looks to be impossible as they are on the same connection? MySqlConnection cnx = new MySqlConnection(connexionString); cnx.Open(); MySqlCommand command= new MySqlCommand("SELECT * FROM folder WHERE folder_id = " + id, cnx); MySqlDataReader reader= commande.ExecuteReader(); while (reader.Read()) { this.folderList[this.folderList.Length] = new CFolder(reader.GetInt32"folder_id"), cnx); } reader.Close(); cnx.Close();

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• Search a string to find which records in table are inside said string

  - by Improfane

  Hello, Say I have a string. Then I have a number of unique tokens or keywords, potentially a large number in a database. I want to search and find out which of these database strings are inside the string I provide (and get the IDs of them). Is there a way of using a query to search the provided string or must it be taken to application space? Am I right in thinking that this is not a 'full text search'? Would the best method be to insert it into the database to make it a full text search?

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• Querying a perimeter around a Geocode-Location (Lat/Lon)

  - by Tim

  Hi, how can I search for geo-objects in a certain perimeter ? E.g. I have several objects with Lat/Lon coordinates stored in my DB. Now I want to retrieve all the objects which lie in a specific perimeter (10 miles or 20 miles) around a given point. I guess what I would have to do is to form some query like: SELECT * FROM objects o where o.lat < (myPositionLat+x) AND o.lon < (myPositionLon+y) Is this right? How do I determine/set the values for x and y?

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• Oracle aggregate function to return a random value for a group?

  - by tpdi

  The standard SQL aggregate function max() will return the highest value in a group; min() will return the lowest. Is there an aggregate function in Oracle to return a random value from a group? Or some technique to achieve this? E.g., given the table foo: group_id value 1 1 1 5 1 9 2 2 2 4 2 8 The SQL query select group_id, max(value), min(value), some_aggregate_random_func(value) from foo group by group_id; might produce: group_id max(value), min(value), some_aggregate_random_func(value) 1 9 1 1 2 8 2 4 with, obviously, the last column being any random value in that group.

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• Validating Column Data Stored as CSV Against Another Table

  - by Jakkwylde

  I wanted to see what some suggested approaches would be to validate a field that is stored as a CSV against a table containing appropriate values. Althought it would be desired, it is NOT an option to split the CSV list into another related table. In the example data below I would be trying to capture the code 99 for widget A. Below is an example data representation. Table: Widgets WidgetName WidgetCodeList A 1, 2, 3 B 1 C 2, 3 D 99 Table: WidgetCodes WidgetCode 1 2 3 An earlier approach was to query the CSV column as rows using various string manipulations and CONNECT_BY_LEVEL however the performance was not acceptible.

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• Get the last N rows in the database in order?

  - by Kristopher

  Let's say I have the following database table: record_id | record_date | record_value -----------+-------------+-------------- 1 | 2010-05-01 | 195.00 2 | 2010-07-01 | 185.00 3 | 2010-09-01 | 175.00 4 | 2010-05-01 | 189.00 5 | 2010-06-01 | 185.00 6 | 2010-07-01 | 180.00 7 | 2010-08-01 | 175.00 8 | 2010-09-01 | 170.00 9 | 2010-10-01 | 165.00 I want to grab the last 5 rows with the data ordered by record_date ASC. This is easy to do with: SELECT * FROM mytable ORDER BY record_date ASC LIMIT 5 OFFSET 4 Which would give me: record_id | record_date | record_value -----------+-------------+-------------- 6 | 2010-07-01 | 180.00 7 | 2010-08-01 | 175.00 3 | 2010-09-01 | 175.00 8 | 2010-09-01 | 170.00 9 | 2010-10-01 | 165.00 But how do I do this when I don't know how many records there are and can't compute the magic number of 4? I've tried this query, but if there are less than 5 records, it results in a negative OFFSET, which is invalid: SELECT * FROM mytable ORDER BY record_date ASC LIMIT 5 OFFSET (SELECT COUNT(*) FROM mytable) - 5; So how do I accomplish this?

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• How to Map a table with another lookup table using JPA?

  - by Sameer Malhotra

  Hi, I have two tables: 1) Application(int appid, int statusid, String appname, String appcity with getter and Setter methods) 2) App_Status(int statusid,String statusDescription with setter and getter methods) I want to map Application table with App_Status so that I don't have to query separately App_Status table in order to get the statusDescription. One thing I have to careful is that no matter what (Insert,update or delete) to the Application table the App_Status table should be unaffected means its a read only table which is maintained by the DBA internally and used only for lookup table. I am using JPA annotations so please suggest how to handle this.

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• Creating a Dynamic Image using Friends pictures

  - by Narendra Rajput

  I am working on a Facebook for which I need to get all the Profile Pictures of Friends of the users. Which I did using FQL query. I need these images for creating a poster of all the Friends Profile pics along tags in them. For that I need to create a Dynamic poster for every user with their Friends tagged in them. I tried using the GD Library for PHP. I tried with the imagecreatefromjpeg() function of php for which I can use one image and pass it to the main image. But here I have more than 1 images (average about 100 images) depending on the number of friends the user has. What function do I need to create this dynamic poster ? Please any help would be appreciated !!

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• On activate does not fire with my Modal/Pop-Up form to Requery

  - by Odesmere

  I have a modal/pop-up form frmEditContact open on this form there is a combo box full of addressescmbAddressList, populated by a query. when the user wants to add an address that doesn't exist there is a button that opens the frmAddress where they may add an address. frmAddress allows them to enter an address to the list and gives the option to save, or cancel (both actions close the form after). with this form closed, the focus is now again on frmEditContact I would like to repopulate the combo box using docmd.Requery cmbAddressList after they close the other form I'm not sure where to handle this, I've tried On Avtivate, On Load, On Update, On Open, On Focus...but none of them fire as I keep the frmEditContact open when they are using the other form is there a way to keep frmEditContact open the whole time, but still an action Event that will fire so that I can Requery? And does On Activate not work with modal forms?

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• Google App Engine - Dealing with concurrency issues of storing an object

  - by Spines

  My User object that I want to create and store in the datastore has an email, and a username. How do I make sure when creating my User object that another User object doesn't also have either the same email or the same username? If I just do a query to see if any other users have already used the username or the email, then there could be a race condition. UPDATE: The solution I'm currently considering is to use the MemCache to implement a locking mechanism. I would acquire 2 locks before trying to store the User object in the datastore. First a lock that locks based on email, then another that locks based on username. Since creating new User objects only happens at user registration time, and it's even rarer that two people try to use either the same username or the same email, I think it's okay to take the performance hit of locking. I'm thinking of using the MemCache locking code that is here: http://appengine-cookbook.appspot.com/recipe/mutex-using-memcache-api/ What do you guys think?

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• Killing the mysqld process

  - by Josh K

  I have a table with ~800k rows. I ran an update users set hash = SHA1(CONCAT({about eight fields})) where 1; Now I have a hung Sequel Pro process and I'm not sure about the mysqld process. This is two questions: What harm can possibly come from killing these programs? I'm working on a separate database, so no damage should come to other databases on the system, right? Assume you had to update a table like this. What would be a quicker / more reliable method of updating without writing a separate script. I just checked with phpMyAdmin and it appears as though the query is complete. I still have Sequel Pro using 100% of both my cores though...

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• Some facebook friends' birthdays returning as null but I have the correct API permissions

  - by Andrei Radulescu

  I'm tring to get my friends' birthdays in my app and some of them are null. I thought that those people don't have a birthday set, but they actually do. My fql query is: SELECT uid,name,birthday_date FROM user WHERE uid IN (SELECT uid2 from friend where uid1=me()) My app has the "friends_birthday" permission set. I also tried with "birthday" instead of "birthday_date". Same result. I imagine that this happens because they opted out somehow, but I don't know how. Is there an alternate solution to actually get their birthdays from facebook? Thanks!

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• DNS Lookup in simple C#/asp.net ajax call is extremely slow

  - by Ryan

  I'm running this out of the VS 2008 debugger on Windows 7, running .Net 3.5. The idea was to make all ajax requests with jQuery only, rather than .net, following some tutorials online. Default.aspx - HTML page, jquery triggers method in Default.aspx.cs http://pastebin.com/pxBvKA2H Default.aspx.cs - C# Webform, just defines a GetDate fuction, which only returns a string for now (trying to eliminate any possible issues) (can only post one hyperlink...) pastebin.com/pnHn50hu The ajax query takes longer than it should. Profiling with firebug revealed that it took 1.03 ms. 1s DNS Lookup | 26ms Waiting | 1ms Receiving EDIT: It continues to take the same set of times if you continue to click and resubmit the request. Is there anything I can do to cut down on the DNS Lookup time / what did I do wrong? Thanks for any help.

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• Regex for finding valid sphinx fields

  - by mlissner

  I'm trying to validate that the fields given to sphinx are valid, but I'm having difficulty. Imagine that valid fields are cat, mouse, dog, puppy. Valid searches would then be: @cat search terms @(cat) search terms @(cat, dog) search term @cat searchterm1 @dog searchterm2 @(cat, dog) searchterm1 @mouse searchterm2 So, I want to use a regular expression to find terms such as cat, dog, mouse in the above examples, and check them against a list of valid terms. Thus, a query such as: @(goat) Would produce an error because goat is not a valid term. I've gotten so that I can find simple queries such as @cat with this regex: (?:@)([^( ]*) But I can't figure out how to find the rest. I'm using python & django, for what that's worth.

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• Loading images from Facebook in Flash Builder

  - by wannax

  Hi, I'm doing a Facebook App where I'd like to pull out all the possible images from a user's album. What I'm trying to do at the moment is a fql query so that i can find all the images that belong to that specific user. it goes something like that: protected function loadFromFacebook(event:MouseEvent):void { var fql:String = "select src_small from photo where owner = me()"; Facebook.fqlQuery(fql, handleGetPhotosResponse); } private function handleGetPhotosResponse(event:Object, fail:Object):void { if (event != null){ facebookPhotos = new ArrayCollection(event as Array); } } I store this images in an array collection but I don't know how to proceed after that. How can I load those images into, say, a Tile List or a Loader? Any help would be much appreciated, thanks

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• In BASH how can i find my system on active internet interface, what is the upload speed?

  - by YumYumYum

  I am trying to write an TUI bandwidth trace application which on query can instantly tell me, that my download and upload speed is XXXX. I have figured out that download i can use with wget and parse it using BASH, but how do i get the upload speed? Example of download parse method: 1) Remote download : wget http://x.x.com:7007/files/software/vnc.zip Length: 1594344 (1.5M) [application/zip] Saving to: `vnc.zip' 100%[==================================================================>] 1,594,344 573K/s in 2.7s 2012-03-24 11:35:22 (573 KB/s) - `vnc.zip' saved [1594344/1594344] 2) Local download tells Length: 1594344 (1.5M) [application/zip] Saving to: `vnc.zip' 100%[==================================================================>] 1,594,344 --.-K/s in 0.1s 2012-03-24 06:43:04 (11.4 MB/s) - `vnc.zip' saved [1594344/1594344]

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• Silverlight dataGrid binding with ria Service doesn' work

  - by Abdulrhman

  hi every one i'm new to Silverlight and it's totally driving me crazy !! i'm using SL4 and trying to bind datagrid with a Domain Service Query: what i did exactly is i generate an ado.net entity model from my database, then create a domain Service class from this model. then in my page i put Datagrid & button. in the click event for this button i write this code: RRDomainContext rr = new RRDomainContext(); this.dataGrid1.ItemsSource = rr.Rooms; this.rr.Load(this.rr.GetRoomsQuery()); when this method executed the nothing changed at the datagrid. can anyone help me with this ?

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• In Bloomberg API how do you specify to get FX forwards as a spread rather than absolute values?

  - by Nick Fortescue

  How do you explicitly request fx forwards as outrights using the bloomberg API? In the Bloomberg terminal you can choose whether to get FX Forwards as absolute rates (outrights) or as offsets from Spots (Points) by doing XDF, hitting 7, then the option is about half way down. 0 means outrights, and 1 means offfsets. With most defaults you can explicitly set them in the API, so your code gives the same result whichever computer you run on. How do you set this one in a V3 API query?

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• Advantage Data Architect doesn't accept 'output to', are there any other options for outputting a ta

  - by likesalmon

  I'm trying to output the results of a SELECT query to a tab delimited text file in Advantage Data Architect. I know I can use the 'Export to' feature to do this, but there are a lot of tables and that is going to take forever. I would rather use the SQL editor, but I found out it does not accept the OUTPUT TO argument, even though that command is part of Sybase SQL. I would like to do this: SELECT * FROM tablename; OUTPUT TO 'C:/ExportDirectory' DELIMITED BY '\t' FORMAT TEXT; Is there another way?

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• Table rows with identifying parameter in each row SQL SERVER 2008 into single row

  - by LiverpoolsNumber9

  Sorry - my question title is probably as inept at my attempt to do this. I have the following (well, similar) in a table in a CMS pageID key value 201 title Page 201's title 201 description This is 201 201 author Dave 301 title Page 301's title 301 description This is 301 301 author Bob As you've probably guessed, what I need is a query that will produce: pageID title description author 201 Page 201's title This is page 201 Dave 301 Page 301's title This is page 301 Bob If anybody could help, i'd be eternally grateful - I know this is "please send me the code" but I'm absolutely stuck. Thanks in advance.

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• How to delete refClass record in Doctrine?

  - by terrani

  Hi all! I have many-to-many relations with the following tables. post tag post_tag I created three classes with Doctrine, so I have the following classes as well. BasePost BaseTag BasePostTag in the setUp() method, I defined relations. I like to delete tag record when I delete post record. So I simply put cascade as descirbed on Doctrine document. $this->hasMany("Tag as Tags",array( 'refClass' => 'PostTag', 'local'=>'object_id', 'foreign'=>'tag_id', 'cascade'=> array('delete') )); it works without a problem. My questions is, how do I delete a record from post_tag table? Do I need to create a query myself?

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• LDAP "Insufficient Access"

  - by mon4goos

  I am trying to create an LDAP filter string. In each LDAP entry there is an attribute called "status" that has many values, some of which are of the regex form "[ab][0-9][1-9]". For example, "a20" or "b81". All other values for the "status" attribute are just alphabetical characters. I only want to let through entries that have a "status" value of the first form. When I construct an LDAP filter such as (status=a*) I get an "Insufficient Access" error. However, if I change the query to (status=a1*) that works fine. Is there any reason for this? If there behavior is unavoidable, can anyone thing of a way to get only the entries I want.

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• Overriding unique indexed values

  - by Yeti

  This is what I'm doing right now (name is UNIQUE): SELECT * FROM fruits WHERE name='apple'; Check if the query returned any result. If yes, don't do anything. If no, a new value has to be inserted: INSERT INTO fruits (name) VALUES ('apple'); Instead of the above is it ok to insert the value into the table without checking if it already exists? If the name already exists in the table, an error will be thrown and if it doesn't, a new record will be inserted. Right now I am having to insert 500 records in a for loop, which results in 1000 queries. Will it be ok to skip the "already-exists" check?

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