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  • creating a primary key format

    - by ryn6
    how do i create a primary key for an account with a format like this: ABC-123 ABC-124 ABC-125 another example: BCA-111 BCA-112 BCA-113 and so on. by the way im using mysql.is it possible to do auto increment when using this format?

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  • Making Browser Auto-Scroll to Most Recently Submitted Comment.

    - by John
    Hello, I made a comment on a Wordpress blog and I noticed that after I submitted the comment, the top of the browser was flush with the top of my comment. In other words, the web page was auto-scrolled down to the top of my comment. How can I do this? I am using a comment system with PHP / MySQL. Thanks in advance, John

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  • derby + hibernate ConstraintViolationException using manytomany relationships

    - by user364470
    Hi, I'm new to Hibernate+Derby... I've seen this issue mentioned throughout the google, but have not seen a proper resolution. This following code works fine with mysql, but when I try this on derby i get exceptions: ( each Tag has two sets of files and vise-versa - manytomany) Tags.java @Entity @Table(name="TAGS") public class Tags implements Serializable { @Id @GeneratedValue(strategy=GenerationType.AUTO) public long getId() { return id; } @ManyToMany(targetEntity=Files.class ) @ForeignKey(name="USER_TAGS_FILES",inverseName="USER_FILES_TAGS") @JoinTable(name="USERTAGS_FILES", joinColumns=@JoinColumn(name="TAGS_ID"), inverseJoinColumns=@JoinColumn(name="FILES_ID")) public Set<data.Files> getUserFiles() { return userFiles; } @ManyToMany(mappedBy="autoTags", targetEntity=data.Files.class) public Set<data.Files> getAutoFiles() { return autoFiles; } Files.java @Entity @Table(name="FILES") public class Files implements Serializable { @Id @GeneratedValue(strategy=GenerationType.AUTO) public long getId() { return id; } @ManyToMany(mappedBy="userFiles", targetEntity=data.Tags.class) public Set getUserTags() { return userTags; } @ManyToMany(targetEntity=Tags.class ) @ForeignKey(name="AUTO_FILES_TAGS",inverseName="AUTO_TAGS_FILES") @JoinTable(name="AUTOTAGS_FILES", joinColumns=@JoinColumn(name="FILES_ID"), inverseJoinColumns=@JoinColumn(name="TAGS_ID")) public Set getAutoTags() { return autoTags; } I add some data to the DB, but when running over Derby these exception turn up (the don't using mysql) Exceptions SEVERE: DELETE on table 'FILES' caused a violation of foreign key constraint 'USER_FILES_TAGS' for key (3). The statement has been rolled back. Jun 10, 2010 9:49:52 AM org.hibernate.event.def.AbstractFlushingEventListener performExecutions SEVERE: Could not synchronize database state with session org.hibernate.exception.ConstraintViolationException: could not delete: [data.Files#3] at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:96) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2712) at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:2895) at org.hibernate.action.EntityDeleteAction.execute(EntityDeleteAction.java:97) at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:268) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:260) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:184) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1206) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:613) at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:344) at $Proxy13.flush(Unknown Source) at data.HibernateORM.removeFile(HibernateORM.java:285) at data.DataImp.removeFile(DataImp.java:195) at booting.DemoBootForTestUntilTestClassesExist.main(DemoBootForTestUntilTestClassesExist.java:62) I have never used derby before so maybe there is something crutal that i'm missing 1) what am I doing wrong? 2) is there any way of cascading properly when I have 2 many-to-many relationships between two classes? Thanks!

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  • ignoring saturday and sunday

    - by bsandrabr
    I am pulling in all the records from my customer database(mysql) for the last ten days $offset1 =strtotime("-10 day"); $date3=date("Y-m-d",$offset1); SELECT * FROM customers WHERE date between '$date3' and '$date' AND customer.custid = '$custid' ORDER by date DESC I would like to leave out the dates falling on a saturday or sunday and would like to put this in my query rather than the php If you can help thanks

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  • live search with Jquery

    - by user272899
    Hello! I am trying to implement a live search on my site. I am using a script somebody has already created. http://www.reynoldsftw.com/2009/03/live-mysql-database-search-with-jquery/ I have got the Jquery, css, html working correctly but am having troubles with the php. I need to change it to contain my database information but everytime I do I recieve an error: Warning: mysql_fetch_array() expects parameter 1 to be resource, boolean given in C:\wamp\www\search.php on line 33 These are the details of my database: database name: development table name: links Columns: id, sitename, siteurl, description, category This is the php script <?php $dbhost = "localhost"; $dbuser = "root"; $dbpass = "password"; $dbname = "links"; $conn = mysql_connect($dbhost, $dbuser, $dbpass) or die ('Error connecting to mysql'); mysql_select_db($dbname); if(isset($_GET['query'])) { $query = $_GET['query']; } else { $query = ""; } if(isset($_GET['type'])) { $type = $_GET['type']; } else { $query = "count"; } if($type == "count") { $sql = mysql_query("SELECT count(url_id) FROM urls WHERE MATCH(url_url, url_title, url_desc) AGAINST('$query' IN BOOLEAN MODE)"); $total = mysql_fetch_array($sql); $num = $total[0]; echo $num; } if($type == "results") { $sql = mysql_query("SELECT url_url, url_title, url_desc FROM urls WHERE MATCH(url_url, url_title, url_desc) AGAINST('$query' IN BOOLEAN MODE)"); while($array = mysql_fetch_array($sql)) { $url_url = $array['url_url']; $url_title = $array['url_title']; $url_desc = $array['url_desc']; echo "<div class=\"url-holder\"><a href=\"" . $url_url . "\" class=\"url-title\" target=\"_blank\">" . $url_title . "</a> <div class=\"url-desc\">" . $url_desc . "</div></div>"; } } mysql_close($conn); ?> Can anybody help me input this database info correctly? I have tried many times but keep getting an error. Thanks in advance.

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  • How does Wordpress link posts to categories in its database?

    - by bcmcfc
    At present I am displaying a list of the last 5 posts in a site's blog in its footer using this mysql query: SELECT post_title, guid, post_date FROM wp_posts WHERE post_type = 'post' AND post_status = 'Publish' ORDER BY post_date DESC LIMIT 5 How can I edit this query to restrict the search to a particular category id? I thought it would be as simple as looking for a category field in the posts table but it isn't!

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  • java cms(opencms) and my SQL configuring problem

    - by akshay
    i have installed open cms on my local machine and it perfectly works fine. But in order to work it corre,ty it is mentioned that i have to modify the my.ini file and set max_alllowed_packed site to 32 I have done it and it works perfectly fine but can i modify this file if i use a third party hosting provider for tomcat and mysql??

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  • What happens if you kill a long-running alter query?

    - by B T
    What happens if you kill a long-running alter query? Will the alter query simply revert? How long could that take (as a proportion of the time it has already been running)? What if that query is being replicated onto another server? Will killing the process on the other server revert the original server's alter query? We're running mysql

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  • distributed system programming with php

    - by ranganaMIT
    Hi guys, I'm doing a system for a hospital in my country as the final year project of my degree, my supervisor specially asked me to use php and mysql for this. i don't have any experience with distributed systems and php programming, can any one help me out to build my base and improove my knowledge stating some sites, books to refer to overcome this matter. regards, rangana.

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  • Open-source generic web service to database interface?

    - by Joe Strout
    I'm looking for a thin, generic layer (probably written in PHP) that sits between a database (probably MySQL) and web service clients (which could be anything). I imagine there would be config files of some sort that tell it how to map web service requests to database queries (or other DB commands). It would also need to handle authentication and authorization, of course. I've done some googling but failed to find anything that fits the bill. Can anyone suggest something like this?

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  • database transaction

    - by user121196
    If I'm using a mysql client(eg. squirrel) to execute an update query, after 10 seconds, I cancelled the query, would there be partial update or would everything that's done be rolled back?

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  • Query MSQL for winners, starting at xth place using SELECT

    - by incrediman
    In my MySQL table Winners, I have a list of people who have won. What I'd like to do is select a list of the names of 10 winners. So what I have right now is this: SELECT name FROM Winners ORDER BY points DESC LIMIT 10 This returns the first 10 winners which is great. But how can I make it (for example) return 10 winners, but starting at 20th place?

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  • Denormalization of large text?

    - by tesmar
    If I have large articles that need to be stored in a database, each associated with many tables would a NoSQL option help? Should I copy the 1000 char articles over multiple "buckets", duplicating them each time they are related to a bucket or should I use a normalized MySQL DB with lots of Memcache?

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  • MySQL to SQL Server - Incorrect syntax near the keyword 'mictest'

    - by Champi Ardon
    First, I tried to migrate my databases with SQL Server Migration Assistant for MySql and it worked fine. But now, I have some problems with my code. I had this line on MYSQL version : $fct="SELECT * FROM `users` WHERE `USER` LIKE CONVERT( _utf8 '$LOGIN' USING latin1 ) COLLATE latin1_swedish_ci AND `PASS` LIKE CONVERT( _utf8 '$PASS'USING latin1 ) COLLATE latin1_swedish_ci"; This line worked fine but when i try to put this on my SQL Version i get : Error : SQLSTATE[42000]: [Microsoft][SQL Server Native Client 10.0][SQL Server]Incorrect syntax with the keyword 'mictest'. (which is my $LOGIN) I though it was a problem with "quotes" so I also tried this but it is not working : $fct="SELECT * FROM users WHERE USER LIKE CONVERT( _utf8 '$LOGIN' USING latin1 ) COLLATE latin1_swedish_ci AND PASS LIKE CONVERT( _utf8 '$PASS' USING latin1 ) COLLATE latin1_swedish_ci";

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  • How to get UTF-8 working in java webapps?

    - by kosoant
    I need to get UTF-8 working in my Java webapp (servlets + JSP, no framework used) to support äöå etc. for regular Finnish text and Cyrillic alphabets like ??? for special cases. My setup is the following: Development encironment: Windows XP Production encironment: Debian Database used: MySQL 5.x Users mainly use Firefox2 but also Opera 9.x, FF3, IE7 and Google Chrome are used to access the site. How to achieve this?

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  • How to recognize what indexes are not used?

    - by tomaszs
    I have a table in MySQL with 7 indexes, most of them are on more than one column. I think here is too much indexes. Is there any way to get statistics of what indexes are used more by all thousands of queries to this database and what are less worthy so I know what index to consider to remove in first place?

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  • Regex for Matching First Alphanumeric Character skipping (The |An? )

    - by TheLizardKing
    I have a list of artists, albums and tracks that I want to sort using the first letter of their respective name. The issue arrives when I want to ignore "The ", "A ", "An " and other various non-alphanumeric characters (Talking to you "Weird Al" Yankovic and [dialog]). Django has a nice start '^(An?|The) +' but I want to ignore those and a few others of my choice. I am doing this in Django, using a MySQL db with utf8_bin collation.

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  • How do I write JPA QL statements that hints to the runtime to use the DEFAULT value ?

    - by Jacques René Mesrine
    I have a table like so: mysql> show create table foo; CREATE TABLE foo ( network bigint NOT NULL, activeDate datetime NULL default '0000-00-00 00:00:00', ... ) In the domain object, FooVO the activeDate member is annotated as Temporal. If I don't set activeDate to a valid Date instance, a new record is inserted with NULLs. I want the default value to take effect if I don't set the activeDate member. Thanks.

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  • Sql query to get this result..

    - by bala3569
    Consider i have a user table and i have three columns mobilePhone,homePhone and workPhone... I have to select homePhone for every user as first pref if there is no value i ll go for mobilePhone and if there is no value for it i ll go for workPhone.... Any suggestion how it can be done in mysql..

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  • How to save content uploaded by user?

    - by Rocky
    I am planning to start a site in which the content is generated by the users. What is the best method to save the data submitted by user? Is the method of saving the data in phpmyadmin database a good idea considering that the data submitted by users is large similar to a blog post. Btw I'm good in working with php and mysql but I'm not sure whether it is a good method.

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