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  • How to convert a PGresult to custom data type with libpq (PostgreSQL)

    - by mocopera
    Hi everyone! I'm using the libpq library in C to accessing my PostgreSQL database. So, when I do res = PQexec(conn, "SELECT point FROM test_point3d"); I don't know how to convert the PGresult I got to my custom data type. I know I can use the PQgetValue function, but again I don't know how to convert the returning string to my custom data type. Any suggestion? Thanks in advice.

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  • Persistance Queue Implementation

    - by Winter
    I was reading an article on Batch Processing in java over at JDJ http://java.sys-con.com/node/415321 . The article mentioned using a persistence queue as a Batch Updater instead of immediately sending an individual insert or update to the database. The author doesn't give a concrete example of this concept so I googled Persistence Queue but that didn't come up with much. Does anyone know of a good example of this?

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  • memory size exceeded?

    - by asdas
    i have a form that submits data to a database, i have a function that looks like this: //connect foreach ($_POST as $key => $value) { $_POST[$key] = mysql_real_escape_string($value); } now when i post, SOMETIMES i get an error that says this: Allowed memory size of 268435456 bytes exhausted i figured out that when i do a linebreak, or press enter in the message field, then that is when it causes the error, otherwise it works normal. any ideas?

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  • SQL Math in Excel VBA

    - by Scott
    Excel seems to have a problem with doing math in SQL queries. SELECT ( SELECT sum(column) FROM table1 ) + ( SELECT sum(column) FROM table2 ) AS total This technique works completely fine in ASP and ASP.NET. Has anyone had success doing this in Excel VBA? (My database engine is SQL Server 2000.)

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  • Does a syntax for this exist? In any language?

    - by Michael
    It seems pretty common to me to have an argument, in a dynamically typed language that is either an Object or a key to lookup that object. For instance when I'm working with a database I might have a method getMyRelatedStuff(person) All I really need to lookup the related stuff is the id of the person so my method could look like this in python: def getMyRelatedStuff(person_or_id): id = person_or_id.id if isinstance(person,User) else person_or_id #do some lookup Or going the other direction: def someFileStuff(file_or_name): file = file_or_name if hasattr(file,'write') else open(file_or_name)

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  • php validation code format

    - by user2970887
    Okay I have this MySQL database form and am trying to add validation to it. After 2 days of fighting with it, I thought I would get some advice. Would like that the selected item from dropdown and Firstname, Phone, Email, are all required. Then I want to verify that the data in the Firstname, Lastname, Phone (doesn't have to be any special format), Email and Comments are all acceptable formats before putting in database. Here is what I have so far: <?php include('inc_header.php'); if(isset($_POST['add'])) { require('dbcon.php'); if(! get_magic_quotes_gpc() ) { $Id = addslashes ($_POST['Id']); $List = addslashes ($_POST['List']); $Firstname = addslashes ($_POST['Firstname']); $Lastname = addslashes ($_POST['Lastname']); $Phone = addslashes ($_POST['Phone']); $Email= addslashes ($_POST['Email']); $Calltime = addslashes ($_POST['Calltime']); $Comment = addslashes ($_POST['Comment']); } else { $Id = $_POST['Id']; $Date = $_POST['Date']; $List = $_POST['List']; $Firstname = $_POST['Firstname']; $Lastname = $_POST['Lastname']; $Phone = $_POST['Phone']; $Email = $_POST['Email']; $Calltime = $_POST['Calltime']; $Comment = $_POST['Comment']; } $error = ''; //put chosen function here function validate_Firstname($input, $pattern = "/([A-Za-z0-9])") { return !preg_match($pattern, $input); } function validate_Phone($input, $pattern = "/([A-Za-z0-9])") { return !preg_match($pattern, $input); } function isValidEmail( $Email ){ return filter_var( $Email, FILTER_VALIDATE_EMAIL ); } //get values and validate each one as required $List = mysql_real_escape_string($_POST['List']); if(!$List){ $error .= "Please choose one<br />"; } $Firstname = mysql_real_escape_string($_POST['Firstname']); if(!$Firstname){ $error .= "First name is required<br />"; } //get values and validate each one as required $Lastname = mysql_real_escape_string($_POST['Lastname']); if(!$Lastname){ $error .= "Last name is required<br />"; } //repeat for each field $Email = mysql_real_escape_string($_POST['Email']); if(!isValidEmail($Email)){ $error .= "The email entered is invalid<br />"; } //and so on... if(!$error){ //add insert into database code here $sql = "INSERT INTO contacts ". "(`Id`,`Date`,`List`,`Firstname`,`Lastname`,`Phone`,`Email`,`Calltime`,`Comment`)". "VALUES'$Id,','$Date','$List','$Firstname','$Lastname','$Phone','$Email','$Calltime','$Comment') "; mysql_select_db('hmintcwa_contacts'); $retval = mysql_query( $sql, $conn ); if(! $retval ) { die('Could not enter data: ' . mysql_error()); } echo "Entered data successfully<br /><br /><a href=contactsadd.php><font color=#000000>Back</font></a>\n"; mysql_close($conn); } else { ?> <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>" name="ContactForm"> <table bgcolor="#000000" width="500" cellpadding="5" cellspacing="1" border="0"> <input type="hidden" name="Id" id="Id"> <tr> <td bgcolor="#e9e9e9" align="right">Requested Info</td> <td bgcolor="#ffffff" align="left"><select name="List"> <option value="0" > Please Choose One </option> <option value="Market Analysis" > Market Analysis </option> <option value="Consultation" > Consultation </option></select></td></tr> <tr> <td bgcolor="#e9e9e9" align="right">Date</td> <input name="Date" type="hidden" id="Date" value="<? print(Date("l F d, Y")); ?>" /> <td bgcolor="#ffffff" align="left"><? print(Date("l F d, Y")); ?></td> </tr> <tr> <td bgcolor="#e9e9e9" align="right">Firstname</td> <td bgcolor="#ffffff" align="left"><input name="Firstname" type="text" size="20" id="Firstname"></td></tr> <tr> <td bgcolor="#e9e9e9" align="right">Lastname</td> <td bgcolor="#ffffff" align="left"><input type="text" name="Lastname" size="20" id="Lastname"></td> </tr> <tr> <td bgcolor="#e9e9e9" align="right">Phone</td> <td bgcolor="#ffffff" align="left"><input type="text" name="Phone" size="20" id="Phone"></td></tr> <tr> <td bgcolor="#e9e9e9" align="right">Email</td> <td bgcolor="#ffffff" align="left"><input type="text" name="Email" size="20" id="Email"></td></tr> <tr> <td bgcolor="#e9e9e9" align="right">Preferred Calltime</td> <td bgcolor="#ffffff" align="left"><input type="text" name="Calltime" size="20" id="Calltime"> &nbsp;&nbsp; If none put N/A</td></tr> <tr> <td bgcolor="#e9e9e9" align="right">Comment</td> <td bgcolor="#ffffff" align="left"><textarea name="Comment" cols="40" rows="8" id="Comment"></textarea></td></tr> <tr> <td bgcolor="#e9e9e9" align="right">&nbsp;</td> <td bgcolor="#ffffff" align="center"><br> <input name="add" type="submit" id="add" value="Add Contact"><input type="reset" name="Reset" value="Clear Form"><input type=button value="Cancel" onClick="history.go(-1)"><br>&nbsp; </td> </tr> </table> </form> <br>&nbsp;</center> <?php } ?> </body> </html> So far I just keep chasing error message. Please forgive formatting I am trying to learn be gentle.

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  • Not able to create a datasource registration with WAMP MysQL 5.0 in DBArtisan

    - by Alf Christophersen
    I try in a test version of DBArtisan to set up a datasource and register both servere as localhost, database to use, my username and password, but, when testing the connection, I get message that connection failed. Hooking up from eg. Delphi and other utilities run nicely. But not DBArtisan, Is MySQL 5.0 not supported yet ?? Or is it WAMP that is the culprit naming the service wampmysqld insted of just mysqld ??

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  • What does the length attribute do when set on the @Column JPA annontation?

    - by James McMahon
    What exactly does setting the length on a column do in JPA? @Column(name = "middle_name", nullable = false, length = 32) public String getMiddleName() { return this.middleName; } I understand that you can use the annotations to generate the database schema based on the entity objects, but does length do any sort of check or truncation when persistence happens, or it solely used for schema creation? I also realize that JPA can sit on top of various implementations, the implementation I am concerned with in this case, is Hibernate.

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  • jQuery + ajax livesearch

    - by andrei
    I am doing a mysql database search and retrieving some results via ajax livesearch using the example on w3schools and i want to manipulate those results (drag and drop them) but im having a problem because the script loads before you enter the search and get the results so it does absolutely nothing no the search results. Any thoughts on this matter ?

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  • How we can dyanamically bind data with diffrerent dropdownlist in a grid view?

    - by Lock up
    i am wking on an assignment in which i have a gridview that contain deptno in a dropdownlist.by selecting a particular deptno from that dropdownlist,the number of employee of that department displayed in second dropdownlist that is for displaying employyee of a department.And after selecting the employee its salary detail and date of joining displayed in textboxes?we have two database table one is for employee(fields are deptno,empname,salary,joining date,status(true/false))and second department(fields are deptno,deptname,location);;;

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  • WHERE condition accross multiple rows

    - by Chris G
    I have this table... -------------------------------------- | user_id | status | status_date | -------------------------------------- | 1 | Current | 2012-08-01 | | 1 | Referral | 2012-03-14 | | 2 | Referral | 2012-04-23 | | | | | -------------------------------------- How would I query to find a distinct user_id who has a referral date before 2012-06-30 AND either a current date of after 2012-06-30 or no current status record at all? Database is MySQL.

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  • Help getting the following create table function to work with mysql and C#

    - by Matt
    string createTable = "CREATE TABLE IF NOT EXISTS " + m_strDatabase + "_TimeLogs (logName VARCHAR(16), logTime INTEGER, logCountry TEXT, UNIQUE(logName)) TYPE=MyISAM;"; When this runs, no table is created. No errors either. Im using an ODBC connector. the variable passes in the db name, so that the table created would be users_TimeLogs if the database was called users for example. Am I doing something wrong?

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  • Conditional use of wp_list_categories (Wordpress)

    - by YsoL8
    Hello I am using the wp_list_categories tag in Wordpress. I would like to wrap this in a condition so it is only used when there are posts in the database. Something like: if ($number_of_posts > "0") { } But I can't find a function that'll let me count the number of posts. Anyone know the solution?

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  • Detect and remove noise text

    - by yox
    Given a database table with lots of data in it, what is the best practice to remove noise text? I want to detect and remove strings like: fghfghfghfg qsdqsdqsd rtyrtyrty I'm using Java.

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  • Facebook application - Add wall

    - by fortysixandtwo
    How can I add a wall on my facebook-application (fbml). Do I have to store the wallposts (user-id and comment) in my database, and display them using fb:wall, fb:wallposts, or is it a plugin like fb:comments for this? If so, how do I add a textfield/form for interacting with the wall?

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  • getting bordering US states (php)

    - by Peter Ehrlich
    HI need to be able to select a state and be given a list of the bordering states. Does anyone have or know of code already done for this? If I have to write it myself, what would be the best way - possibly a mysql database of borders (two state columns for each row), and then select matching?

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  • Entity Framework equivalence for NHibernte SchemaExport

    - by jbandi
    Is there an equivalence in Entity Framework to NHibernate SchemaExport? Given I have a working Entity-Model, I would like to programmatically initialize a database. I would like to use this functionality in the setup of my integration tests. Creating the matching DDL for an Entity-Model would also suffice.

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  • Hibernate find by criteria get single result

    - by GigaPr
    Hi, i am experimenting using Hibernate. I am trying to get a User by id this is what i do public User get(DetachedCriteria dc){ List<User> users = getHibernateTemplate().findByCriteria(dc); if(users != null) { return users.get(0); } else return null; } but it fails when the user is not in the database. Could you help me to understand how to achieve this? Thanks

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