Delete Duplicates In MySQL
I have a database in MySql which has 2 fields. The 1st field is called id which is the primary key. The 2nd field is called full_add where there are some duplicates.
I would like to delete all the duplicates in the full_add field leaving only 1 record behind.
It does not matter if the corresponding primary key gets deleted as well because the primary key is not related to any other table or database. I prefer not to use temporary tables or create new tables because my webhost does not allocate much memory to me & my database is quite big.
View Complete Forum Thread with Replies
Related Forum Messages:
How To Delete Duplicates But Keep 1?
I need a way to delete from friend_bulletin WHERE user_id AND subject have duplicates example user_id subject 1 test 2 test 1 test 4 dfgdf 5 dsgdsf 1 test In the axample there are 3 duplicates 1 - test I would like a way to do this but keep 1 of the duplicates
View Replies !
MySQL FT Search - Removing Duplicates
I have a MySQL Fulltext search engine that works beautifully. One problem though: If a row has more than one occurence of the search term, it will display the row over and over for each match. Is there a way that I can return only one row? I tried "array_unique" but I couldn't get it to work.
View Replies !
Avoid Duplicates In MySQL Result Set
I have a database say for types of pop. So this is the db Cola 1 Cola 2 Cola 3 Cola 1 all with unique id's. I would like to display the names of cola on the main page but I would not like duplicates displayed regardless of how many there are. So for the db i just displayed i would like the main page to look like this. Code:
View Replies !
Query MySql Database - Duplicates
I've got a field in a MySql database that I'd like to query. This field contains names of people & there are some duplicates as well. The end result of my query should look like this:- HTML Code: NAMENUMBER OF RECORDS Jonh2 records Alice4 records Builder8 records Yahoo5 records
View Replies !
Mysql Delete - $query = Mysql_query("DELETE
how would i do the following ? $query = mysql_query("DELETE notes, datestamp, abs_value, ID FROM absence_mgt WHERE datestamp='$date' AND ID='$vtc_login' ") or die(mysql_error()); im just getting "Unknown table 'notes' in MULTI DELETE" ?
View Replies !
Mysql DELETE
im a stuck again, could some one please tell me why this dosent work; mysql_query("DELETE FROM messages WHERE from='$fromid', sento='$myid'");
View Replies !
Delete For MySQL
I'm an experienced java/C++/SQL programmer who hasnt used PHP. I'm looking for some generic database access pages for doing dds, edits, deletes, etc., hopefully with some error handling. I'd rather start with a basic shell of code, so I don't have to reinvent the wheel, and can just change connection string, database fields, etc.
View Replies !
Delete MySql Row By Date
Can someone help me with the following problem: I have a table that includes a column for "last application date", let's simply call it "date". Now the problem is how to automatically delete rows where the information in the "date" column has gone old, let's say by -86400 (1 day). Example: today's date is April 11th, which means that all rows with the info April 10th in the date column would get deleted.
View Replies !
How Do You Do A CASCADE Delete In MySQL?
I'd like to delete a record and all its children records at one time. How do I do that? Can you, in one SQL statement, delete from table 1 where id = 3 delete from table 2 where id = 12 delete from table 3 where id = 12 ......
View Replies !
MySQL - Delete Across Two Tables. OT
i cant find the MySQL newsgroup, however i am hoping to pick up on some expert advice from php/mysql gurus here. I'm having some trouble performing a delete across two tables. The tables i have are: questionnaires (id, name); questionnaire_questions (questionnaires_id, id, name, qf_type) The questionnaire_questions table contains a list of questions for a specific questionnaire (indicated by the questonnaires_id). I would like to remove a questionnaire, and when doing so all corresponding questionnaire_questions who have matching id's (questionnaires.id = questionnaire_questions.questionnaires_id). I have this statement, however it only works if a questionnaire has questions... however i would like it to delete even if no questions exist for that specific questionnaire. The SQL i am using is: delete questionnaires, questionnaire_questions FROM questionnaires, questionnaire_questions WHERE questionnaires.id = questionnaire_questions.questionnaires_id AND questionnaires.id = THE_QUESTIONAIRE_TO_DELETE_ID
View Replies !
DELETE Problem With MySQL
I've been learning using PHP and MySQL from the tutorial at freewebmasterhelp.com. Everything works fine, except deleting things. The script is invoked with a URL like this: http://www.example.org/test/delete_entry.php?id=35 And here's the script: <? include("dbinfo.inc.php"); $id = $_POST['id']; mysql_connect($server, $user, $password); $query = "DELETE FROM test1 WHERE id = '$id'"; @mysql_select_db($database) or die("Unable to select database."); mysql_query($query); mysql_close(); header("Location: entries.php"); ?> The dbinfo.inc.php file defines the variables $server, $database, $user and $password. The login part works.
View Replies !
Mysql Delete From A Form
i'm trying to find out how to get this to work. You type in a name of a record in the database and it removes it. In this case it's deleting the record that when you type in the name of the server it looks for it in the column "servername". You type in the servername and it will delete the whole record. Code:
View Replies !
MySQL MultiTable Delete...
I've been able to delete rows from one table successfully but what I want to try next is giving me some problems. I have a users 'id' which is unique. Heres what I want to-do. DELETE * FROM users WHERE id = 1 DELETE * FROM messages WHERE from = 1 DELETE * FROM comments WHERE user = 1 In each table there oginizaed a little different hense the id , from & user... but thats what I want to-do, without having to-do them all sepreatly, would like it to be efficent. the users ID will be passed along as the var 'id' any thoughts? So pretty much it takes the users id number and deletes them from each table.
View Replies !
Mysql Delete Record
when I run this code below it doesn't delete the record or display any error message $id = $_GET['id']; include("../dbconnect.php"); mysql_query("DELETE FROM promotions WHERE id='$id'") or die(mysql_error()); Such a simple thing to do but I don't no why it doesn't work
View Replies !
How To Delete Only Certain Text In A Mysql Row?
I have a table setup that has a column setup as friends and users can add friends to this column no problem. What I would like to know is how to delete only certain parts of the text of the row/cell where their friends are stored. The friends text is seperated by the following : " , " That is a space on either side and comma in the middle of the space. I know how to explode the results and put into an array to display the reuslts, but is there a way to delete only one of the friends if the text is as follows. , thomas , frank , irene , I think you can get the idea. Is it possible to do this or should I just update the whole cell without the array[$i] result being the friend?
View Replies !
PHP Unlink() & Mysql Delete
Im trying to delete a file, then delete the row in my table that holds the info for this file. I tried the code below and got this error: Parse error: parse error, unexpected T_STRING in /nfs/cust/4/97/13/731794/web/Admin/backup/PXS_DeleteBackup.php on line 34 Here is my code:
View Replies !
Mysql Row And File Delete
I have a database with the following colums, imageID, imageName, imageDesc, imageFile, imageHeight, imageWidth, imageThumb, imageThumbHeight, and imageThumb Width. I can easily delete a row from the mysql table, galImages, but I also want to delete two files from a directory. The file names are stored in the columns imageFile and imageThumb.
View Replies !
Delete MySQL Data
I am building a lunch ordering system for a company. The employees can login, order lunch, and the administrator can see what everyone ordered for lunch in the admin panel. The problem is that when the employees enter data, it stays in the database until they update it. If an employee is sick, their lunch order from the previous day is still in the database. Is there a way to clear those values they enter at a certain time in MySQL.
View Replies !
Mysql Query : Delete From *
When I use phpmyadmin, and run this sql query, it will tell me that it affected X amount of rows (lets say 10). However, when i run my script, it doesnt' tell me that. Code:
View Replies !
How To Delete MySQL Database.
I've got three hostings with the GoDaddy hosting service. The hostings are supposed to provide only one MySQL database each. I've just recently noticed in the phpMyAdmin program that separate databases, each with the name "test," has appeared in two of the three hostings. I don't know how they got there. I didn't put them there. I contacted GoDaddy's technical support. They said that the "test" databases automatically comes with the phpMyAdmin program. Of course, that's not right. Anyway they said that I could delete the extra database without damaging anything.
View Replies !
MYSQL/PHP Delete Script
Im having problems getting my delete script to work it comes back with: Delete Error: Unknown column 'EVANS' in 'where clause' so it is using the surname i input as the column name but why?
View Replies !
Php/mysql Insert, Update, Delete All-in-one
I have a check box form in an admin area, that links various related tables into one. These check box results are stored in an array, and then looped, there are in fact four groups of arrays, but the array length could become large (i.e. dozens - not hundreds) The issue I have is that from the one form multiple things need to occur. - If a box is checked and the record doesn't exist a new record needs to be inserted. - If a box is checked and the record does exist, it should be ignored (as it already exists). - If the box is unchecked and the record exists, it should be deleted. - If the box is unchecked and the record doesn't exist it should be ignored (the record doesn't exists). I'm looking for the logic and process (rather than being hand fed code ) Can this be done with 1 (or more likely 2) sql statements. Or do I have to loop thru the arrays, checking the existance and then applying a specific sql statement depending upon checked status and the records existance. Someone mentioned using IF() in the sql statement, but I am not familiar with that one.
View Replies !
Delete Row From Mysql Only Deletes The Contents?
mysql_query("DELETE FROM cart WHERE ItemId=$ItemId"); There is the code but the result in my databse is that the ID number changes from, lets say, 77 to 78 with 78's contents being empty. Therefore when I look at the results - the deleted ID77 is gone but now I have ID78 with no content! Does anyone know why and how do I make it stop?
View Replies !
MySQL DELETE: How To Get Page To Refresh?
I have a script that deletes records in a table. It works fine. However, it redirects the browser back to the page and the record stills shows there. Only after the page is manually refreshed does it disappear. I've used both header("Refresh...") and header("Location...") to accomplish the redriect, but no dice. The only thing that seems to work is if a unique URL is pushed into the address bar, which I do by appending md5(microtime()) to the end of the redirect URL.
View Replies !
Select & Delete Mysql Queries
i've try to insert and delete record at the same page, but it only can insert and can't delete the record. when i click submit button from the previous form, the record is insert into table B and delete from the table A. is the code correct? Code:
View Replies !
Delete Data From MySQL Database
I am new to PHP and MySQL but I have setup a MySQL database. I can view the information in an HTML table using PHP scripts and can delete an entry form the database table, but what i need to do is to be able to delete an entry by selecting a radio button next to the relevent information however when i try to add a form in the PHP script i get an error.
View Replies !
MySQL Delete Only Deleting Content
I am working on a content editor for a client who wants tha ability to add new page. But he also has to be able to delete page. The pages are refered by their PID column which is set to auto increment. However, when I delete a row, for some reason, it deletes the content in the row, but not the row itself. So, I have an empy row left which gets assigned a PID when I drop the PID column and reconstruct it with the new auto_increment numbers. What could be causing this? Or is there a way to renumber the auto_increments after a page has been deleted? My coding is a little rusty right now as I am out of practice. had to have a reference manual by my site at all times. PHP Code: $sql     = "DELETE FROM $db_table WHERE PID = $id LIMIT 1"; $result = @mysql_query($sql, $db_connect) or die(mysql_error()); $drop     = "ALTER TABLE $db_table DROP COLUMN PID"; $result = @mysql_query($drop, $db_connect) or die(mysql_error()); $add    = "ALTER TABLE $db_table ADD PID INT NOT NULL AUTO_INCREMENT PRIMARY KEY FIRST"; $result = @mysql_query($add, $db_connect) or die(mysql_error());
View Replies !
Time Limit To Delete From Mysql
on my site i allow users to upload .doc, .pdf and image files, over time these files will build up on the server and take up a bit of space, i was thinking of adding a "clean up" button in the admin section where files/users older than a certain time are deleted from mysql and the files (unlinked) can anyone advise me on the best way to acomplish this. i know i need to query the database then find all files uploaded (say after 28 days for example) is that on the right track or is there another way at all?
View Replies !
Delete Issues MySQL 4.0.25-standard
<? include("../../includes/global.inc.php"); mysql_connect($glob['dbhost' ],$glob['dbusername' ],$glob['dbpassword' ]); @mysql_select_db($glob['dbdatabase' ]) or die( "Unable to select database"); $query = "DELETE FROM testimonials WHERE id LIKE '$id'"; mysql_query($query); echo "Record Deleted"; mysql_close(); ?> <META HTTP-EQUIV="refresh" content="0;URL=admintestimonials.php"> the issue is that it is not deleting the record. the $id is an echo from another page. I can see that it is echoing the id number just does not delete the record. any ideas?
View Replies !
Delete Textfile List From MySQL Table
I have a list of email addresses that I need to delete from my database and they are in a textfile, one on each line like below... a@b.com c@d.com e@f.com etc. does anybody have a snippet of PHP code that I could use to accomplish such a task?
View Replies !
PHP File To Delete Multiple Talbes In MySQL
i installed PHP Nuke, didnt really like it. I think its much more then what I need. Great System, just think alot of it is useless for my needs. In any case i want to delete all the tables it created in my DB. Anyone got a script I can run to delete all tables that start with.
View Replies !
How Do I Delete Selected Rows From MySQL Table?
I am trying to figure out how to delete selected rows from a MySQL database table. The web site that I am working on has a page that will extract rows, using the "SELECT * FROM .. etc." statement from a database and output them in a table - like the one below (bottom part). I've got that part figured out. What I am trying to figure out is if the user puts a checkmark in one of the checkboxes (below) how would I write the PHP code to delete one or two of the rows from the MySQL table? PHP Code:
View Replies !
Delete Record - When The Delete Link Is Clicked The Next Page Is Blank And Nothing Is Deleted.
This is my "delete.php" and this "todo/delete.php?id=64" an example of a link to it generated from the index.php page. When the delete link is clicked the next page is blank and nothing is deleted. What have I done wrong? <? include("dbinfo.inc.php"); mysql_connect(localhost,$username,$password); @mysql_select_db($database) or die( "Unable to select database"); $id="delete from todo where id='$id'"; mysql_query($id); mysql_close(); ?>
View Replies !
Duplicates
check for duplicates of anything? For example, in the customers table, I want to check for duplicate zip codes, and display them. So, if there are 40 records of zipcode ?', and 35 records of? By the way, I don't know what zip codes are out there, I just used those as examples. So, I don't have an particular zip code I'd like to view. I'm just curious to see how many of any duplicate zip codes are in the table.This query does the exact opposite of what I want to do:PHP Code: SELECT DISTINCT zipcode FROM customers And I tried this query,but it only seemed to cause my PhpMyAdmin to bog down:PHP Code: SELECT zipcode FROM customers WHERE zipcode IN ( SELECT zipcode FROM customers GROUP BY zipcode HAVING COUNT(*) > 1 ) How would I pull out only zip codes, if, there are more than 1?
View Replies !
Code To Look For Duplicates
I would like to create a php script that would search a log file and spit out the top 10 requested songs but...only allow an IP to vote for the same artist once. So for example. The log file looks like this. 04-03-2002,18:40:40,xx.xx.xx.xx,0,Brett Raymond - Angel's Gonna Find You.mp3 04-03-2002,19:33:20,xx.xxx.xxx.xx,0,Alex Mackey - I Know That My Redeemer Lives.mp3 04-03-2002,19:43:21,xx.xxx.xx.x,0,F:Jenee Wright - His Eye Is On The Sparrow.mp3 04-03-2002,19:45:44,xx.xx.xx.xxx,0,Jeff Long - Gethsemane.mp3 The xxx's are the IP's which I masked for this example. Is PHP capable of doing what I need or should I look into a Delphi or C++ program? If PHP can do this how would I start it out?
View Replies !
Removing Duplicates
I'm getting some data from a database, but there are duplicates for every entry. For instance, if you looked a table of posts for this forum, you'd see posts and the author. I'm getting the author, so there could be hundreds or more of repeats. I'd like to basically get all the uniques in a column.
View Replies !
Sql Counting Duplicates
Hy I have this code: ------------------------------------------------------------------------ $result = mysql_query("select * from smjestaj left join grad on grad.grad=smjestaj.grad_pbroj order by grad_pbroj ASC", $db) or die ("Could not read data because ".mysql_error()); // print the data in a table if (mysql_num_rows($result)) { print "<table cellspacing=0 border=1 width="25%" class="redovi"> "; print "<tr class="headline"><td> Grad </td></tr>"; while ($qry = mysql_fetch_array($result)) { print "<tr><td><a href="" . "lista_sa_linkovima_po_gradovima.php?grad=$qry[grad_pbroj]"[color=blue] >$qry[Naziv]</a></td>";[/color] print "</tr> "; } print "</table> "; } mysql_close($db); ------------------------------------------------------------------------ Table smjestaj has coloumns: id | Name | grad_pbroj | ... Table grad has coloumns: grad_pbroj | Naziv| Now i wanna display all the grad_pbroj coloumns from 'smjestaj', buth not displaying duplicates, just to count them, and put the count behind the 'grad_pbroj' coloumn. Result: Naziv_first (3) Naziv_second (1) Naziv_third (8) I nead full solution, because i have tried everythig and either sql of php displaying is fucking me. I have tried all of that group by, count sql syntax, and i allways get error. Anyone cann help me plz. Dejan ps. sorry to all the people i have asked this before, buth not giving full description (Arjen, Jerry Stuckle).
View Replies !
Prevent Duplicates
I have a simple db with three columns,id name and details. There are two forms for adding and editing details, to be sure that the add details form does not create duplicates i need to: check that a name does not already exist before the new data is inserted, if the name already exists then i want to simply update the details.
View Replies !
Check For Duplicates
i have a small problem of checking for duplicated unique data input. i want to know if its possible to write a php script which if i copy and paste an address book from one data source and save it, then update addresses from a different source it will say something along :- error $address already exists in this document. if so could someone point me in the right direction?
View Replies !
Remove Duplicates
I have the following: $result = mysql_query("SELECT * FROM products ORDER BY CategoryID"); How do I modify that to get rid of the duplicates in CategoryID? e.g. I dont want a list saying red, red, red, blue, blue, yellow, yellow. Rather, I want it to show red, blue, yellow.
View Replies !
Find Duplicates
I want to have a php page which displays all the duplicate members in my database, I just want it to show in a table FirstName, LastName, The No. of Matches, And also have a clickable View link... Anyone done this before?
View Replies !
|
TRACKER
