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Found 406 results

  1. Hi, I have a MySql query which currently looks like this Query = "select Question,Answer1,Answer2,Answer3,CorrectAnswer,id,Duplicate from Questions where id='" + RandomN.Text + "'" As you can see I have a table called 'Questions' which has several columns, Im using VB.NET I also have a textBox on a windows form called 'RandomN' What this does is it takes whatever number is in my textBox called RandomN.Text and looks for that number in the id column and returns all data on that row. What I am trying to acheive now is this, I have a column called Duplicate it will either contain the word 'True' or 'False' I would like it to only return data from the given number in the textBox if the Duplicate column in that row contains the word 'False' If someone can shed some light I would be greatful. Thanks
  2. HI, Why can't I import a table into my existing DB using the command below: mysql -u root -p mydatabase < file.sql; This has always worked but now I get the following error. mysql version is Thanks !
  3. Hello Everyone - I am playing around with some MYSQL and PHP project I have. I ran into a complex problem getting a PHP table filled with data from MYSQL. I will try to explain what I am trying to do: I am trying to do something like this but in PHP. This is my data from MYSQL database. The Table is called Children This is a quick explanation of how each column on the first screenshot should be filled from the database. This code is what I have so far... to be honest i am not sure how to get the totals of rest of the columns. Maybe use I can use subqueries or if statements... not sure! Can you please help me out? $r = mysqli_query($dbc,"SELECT Classrooms.ClassroomName, COUNT(*) AS TotalChildren FROM Children JOIN Classrooms ON Children.classroomID = Classrooms.classroomID GROUP BY Classrooms.ClassroomName");
  4. I'm a newbie, can you please help? I'm getting a mysql error "Unknown column 'E0000001' in 'where clause'" The id is in the URL: ...user-profile.php?id=E0000001 My Query $query = mysqli_query($con, "SELECT * FROM UserList WHERE UserID=".$id) or die (mysqli_error($con)); Thank you
  5. I am trying to centralize my database communicatin into a class (im getting tired of typing and retyping the code to send queries) Its not done but I cant get INSERT to work. Heres my Class: <?php ###################################################### # Class Name: DBConnect # Description: Base Class to handle DB inquiries # Created: 06/27/19 # Updated: 06/27/19 # Author: James 'Karæthon' Cantando # Contact: TheKaraethon@gmail.com ###################################################### class DBConnect{ ###################################################### # PROPERTIES ###################################################### # PRIVATE private const HOST = 'localhost'; private const USER = 'root'; private const PASS = ''; private const DB = 'crackthecode'; private $link; private $table; # PUBLIC ###################################################### # METHODS ###################################################### # CONSTRUCTOR function __construct($target){ $this -> table = $target; $this -> link = mysqli_connect(self::HOST,self::USER,self::PASS,self::DB); if(!$this->link){ die("An error occured while attempting to connect to the table \"{$this -> table}\" on the ".self::DB." database.<br />Error#: ".mysqli_connect_errno()."<br />Description: ".mysqli_connect_error()); } } # PRIVATE private function checkValue($val){ switch(strtoupper($val)){ case 'NULL': return 'NULL, '; break; case 'CURRENT_TIMESTAMP': return 'CURRENT_TIMESTAMP, '; break; default: return "`".$val."`, "; } } # PUBLIC public function getData($criteria){ $query = "SELECT * FROM {$this->table} WHERE "; $crit = ""; foreach($criteria as $column => $value){ if(($column === 'bind')){ $crit .= "{$value} "; }else{ $crit .= "{$column} = {$value} "; } } $result = mysqli_query($this->link, $query.$crit); if(mysqli_num_rows($result) !== 0){ return $result; }else{ return false; } } public function newData($data){ $query = "INSERT INTO `{$this->table}` "; $cols = "("; $vals = "("; foreach($data as $col => $val){ $cols .= "`".$col."`, "; $vals .= $this->checkValue($val); } $query = $query.substr($cols,0,-2).") VALUES ".substr($vals,0,-2).")"; echo $query; echo "<br />INSERT INTO `players` (`PlayerID`, `CreatedDate`, `Username`, `Passcode`, `Email`, `FName`, `Lname`, `Addr1`, `Addr2`, `City`, `State`, `Country`, `PostalCode`, `Phone`, `PhoneType`, `TaxpayerID`, `DOB`, `TokenBalance`) VALUES (NULL, CURRENT_TIMESTAMP, 'test', 'ggb', 'hyh', 'yjj', 'hjj', 'ghu', 'ghj', 'tuo', 'dgi', 'fgu', 'iyh', 'ghk', 'Other', 'tujk', '2019-6-17', '0')"; $insert = mysqli_query($this->link, $query); //$insert = mysqli_query($this->link, "INSERT INTO `players` (`PlayerID`, `CreatedDate`, `Username`, `Passcode`, `Email`, `FName`, `Lname`, `Addr1`, `Addr2`, `City`, `State`, `Country`, `PostalCode`, `Phone`, `PhoneType`, `TaxpayerID`, `DOB`, `TokenBalance`) VALUES (NULL, CURRENT_TIMESTAMP, 'test', 'ggb', 'hyh', 'yjj', 'hjj', 'ghu', 'ghj', 'tuo', 'dgi', 'fgu', 'iyh', 'ghk', 'Other', 'tujk', '2019-6-17', '0')"); if(!$insert){ echo "An error occured while attempting to INSERT into the table \"{$this -> table}\" on the ".self::DB." database.<br />Error#: ".mysqli_connect_errno()."<br />Description: ".mysqli_connect_error(); } return $insert; } ###################################################### # End Class ###################################################### } ?> The testing page has this: <?php include '../includes/dbconn.class'; $test = new DBConnect("players"); $inserted = $test->newData([ 'playerID'=> 'NULL', 'CreatedDate'=> 'CURRENT_TIMESTAMP', 'Username'=>'test', 'Passcode'=>'123456789', 'Email'=>'test@test.test', 'FName'=>'test', 'Lname'=>'tested', 'Addr1'=>'1234 msin st', 'Addr2'=>'NULL', 'City'=>'Anytown', 'State'=>'Denial', 'Country'=>'United States', 'PostalCode'=>'12345-6789', 'Phone'=>'19995551212', 'PhoneType'=>'Other', 'TaxpayerID'=>'123-45-6789', 'DOB'=>'2019-6-17', 'TokenBalance'=>'1000000000' ]); if($inserted){echo 'Insert succeeded.';}else{echo 'Insert failed.';} ?> In the class file you will see two queries, one code generated the other from a successful phpmyadmin query. The phpmyadmin one works everytime, but the generated doent. and I cant see any difference between them when echoed except the values being inserted. please what am I doing wrong? Output from echoed queries: Generated Query: INSERT INTO `players` (`playerID`, `CreatedDate`, `Username`, `Passcode`, `Email`, `FName`, `Lname`, `Addr1`, `Addr2`, `City`, `State`, `Country`, `PostalCode`, `Phone`, `PhoneType`, `TaxpayerID`, `DOB`, `TokenBalance`) VALUES (NULL, CURRENT_TIMESTAMP, `test`, `123456789`, `test@test.test`, `test`, `tested`, `1234 msin st`, NULL, `Anytown`, `Denial`, `United States`, `12345-6789`, `19995551212`, `Other`, `123-45-6789`, `2019-6-17`, `1000000000`) PHPMyAdmin Query: INSERT INTO `players` (`PlayerID`, `CreatedDate`, `Username`, `Passcode`, `Email`, `FName`, `Lname`, `Addr1`, `Addr2`, `City`, `State`, `Country`, `PostalCode`, `Phone`, `PhoneType`, `TaxpayerID`, `DOB`, `TokenBalance`) VALUES (NULL, CURRENT_TIMESTAMP, 'test', 'ggb', 'hyh', 'yjj', 'hjj', 'ghu', 'ghj', 'tuo', 'dgi', 'fgu', 'iyh', 'ghk', 'Other', 'tujk', '2019-6-17', '0') notes mysql version: 10.0.33-MariaDB (? is that correct?)
  6. I have the following function: public function getData($criteria){ $query = "SELECT * FROM {$this->table} WHERE "; $crit = ""; foreach($criteria as $column => $value){ if($column = 'bind'){ $crit .= "{$value} "; }else{ $crit .= "{$column} = {$value} "; } } echo $crit; } I'm testing it with getData(['test1'=>'test2', 'bind'=>'AND', 'test3'=>'test4']); But instead of getting "test1 = test2 AND test3 = test4" the echo output is "test2 AND test4". I'm probably too close to see whats wrong, what do you see?
  7. I'm on a new path here and would appreciate any ideas you pros might have. I think this involves triggers and another table but am not sure. I have a project record that has fields that contain information. It's important to know when some fields change. For example, I have a field call DRAWING which contains a link to a project print. Values in this link change whenever the print is modified. It's important to know the date of the last change. When the project page is opened for review, I want to show, to the right of this field (and a few others), the date/time is was last changed. I want the time information field based, not record based. My initial idea is to trigger after a record update and compare an 'identical' table against the project table. After checking the fields of interest for change I would write the project table associated lastupdate fields with a date and then overwrite this 'identical' table with the new state of things. This all could be done with code but it gets a bit onerous. I was hoping to do it once in a stored procedure. Comments? Thank you. 10.1.38-MariaDB
  8. I have created a registration page to access my website. After the user registrate himself should appear an alert saying that the registration was OK and a redirect to main.php page... however for some reason if I create an insert statement the alert and the redirect don't appear... If I remove the insert the alert and the redirect works... why? This is part of the code of my 3 files: registration.php (ajax call) $('#submit').click(function() { var username2 = $('#uname2').val(); var password2 = $('#psw2').val(); $.ajax({ url: 'ajax/response.php', type: 'GET', data: {username2 : username2, password2: password2}, success: function(data) { if(data === 'correct') { alert("Username and Password have been created!"); //don' work with the insert location.replace("main.php"); //don' work with the insert } else { alert("Username or password are not correct... please register yourself!"); } } }); }); response.php (answer to ajax call) if(isset($_GET['username2']) && isset($_GET['password2'])) { $username2 = $_GET['username2']; $password2 = $_GET['password2']; if (checkUser($pdo, $username2) === true) { echo 'duplicate'; } else { insertUserPwd($pdo, $username2, $password2); //including this line the redirect and the alert doesn't work... the insert is OK echo 'correct'; } } data_access.php (the function works but doesn't permit alert and redirect to appear) function insertUserPwd(PDO $pdo, $usr, $pwd) { $data = [ 'id' => '', 'user' => $usr, 'password' => $pwd ]; $sql = "INSERT INTO users (id, user, password) VALUES (:id, :user, :password)"; $stmt= $pdo->prepare($sql); $stmt->execute($data); } Can someone help me to fix the code?
  9. I'm suddenly having trouble using my connection to my MySQL database... (yes it was working but now...) I have the Connection created in an include file and stored in variable $DB, in the main file that includes the file containing the$DB there are other includes for classes. These classes are SUPPOSED to use $DB to connect to and SELECT/UPDATE/INSERT, but for a reason I cant figure out they suddenly stopped seeing $DB. it keeps saying its an undefined variable. If you need to see code I can post...
  10. Is it (I'll bet the anwer is Yes) possible to SELECT the oldest entries in the table? "SELECT * FROM `vaults` WHERE `Status` = "Unsolved" ORDER BY `CREATED` LIMIT 75 Would this be correct?
  11. I am getting Fatal error: Uncaught Error: Call to a member function real_query() on null with this code: public final function Retrieve($TABLE, $CRIT){ $_query = "SELECT * FROM `{$TABLE}` WHERE "; foreach($CRIT as $_field => $info){ $_query .= " `{$_field}` = `{$info}` &&"; } if($this->LINK->real_query(rtrim($_query, ' &'))){ return $this->LINK->store_result(); } else{ return json_encode(array("Error"=>$this->LINK->errno(), "Description"=>$this->LINK->error())); } } (LINK is my mysql_connect() result.) I have tried everything i can think of, ->query, going to mysqli_query, breaking it sown and using a $result variable, but nothing seems to work...
  12. When I run this I am getting no errors and no data back please can someone tell me what i am doing wrong <?php include 'conn.php'; // Create connection $conn = new mysqli($servername, $username, $password, $dbname); //Query $sql = $conn->prepare("SELECT hotelid, hotelname FROM Hotels WHERE hotelid = '1'"); $sql->execute() ; ?> <div id="container"> <header> <div id="header"> <div class="h1"> <?php while( $row = $sql->fetch()) : ?> <h1><span><?php echo $row['hotelname']; ?></span> <?php endwhile ?>
  13. I'm currently making use of arrays to modify my font colors in my chat script for example $admin = array('m70141099002' , 'Debater', '27765238453', ''); $moderator = array('m52626156002', 'm57010835002' , 'm50079252002', '27723289551', 'm38565659002'); $testip = $_SERVER["HTTP_X_MXIT_USERID_R"]; if(!isset($name)) { $name = "Debater"; } if(!isset($testip)) { $testip = "Debater"; } ////////////////This is for Admin Permission Users////////////// if (in_array($testip, $admin)) { if (in_array($list['StringyChat_ip'], $admin)) { print '<span style="color:#828282">' . '(' . date( 'D H:i:s', $list['StringyChat_time'] ) . ') ' . '</span>' . $form . ' ' . '</span>'. '<span style="color:red">' . '<b>' . $list['StringyChat_name'] . '</b>' . ' : ' . filterBadWords(wordwrap($list['StringyChat_message'], $line_length,"<br>\n")) . '</span>' . '<span style="color:#d8d8d8">' . " - " . $ipi . '</span>' . '<br />'; } elseif (in_array($list['StringyChat_ip'], $moderator)) { print '<span style="color:#828282">' . '(' . date( 'D H:i:s', $list['StringyChat_time'] ) . ') ' . '</span>' . $form . ' ' . '<span style="color:green">' . '<b>' . $list['StringyChat_name'] . '</b>' . ' : ' . filterBadWords(wordwrap($list['StringyChat_message'], $line_length,"<br>\n")) . '</span>' . '<span style="color:#d8d8d8">' . " - " . $ipi . '</span>' . '<br />'; } elseif (in_array($list['StringyChat_ip'], $pc)) { print '<span style="color:gold">' . '(' . date( 'D H:i:s', $list['StringyChat_time'] ) . ') ' . '</span>' . $form . ' ' . '<span style="color:purple">' . '<b>' . $list['StringyChat_name'] . '</b>' . '</span>' . ' : ' . '<span style="color:blue">' . filterBadWords(wordwrap($list['StringyChat_message'], $line_length,"<br>\n")) . '</span>' . '<span style="color:#d8d8d8">' . " - " . $ipi . '</span>' . '<br />'; } elseif (in_array($list['StringyChat_ip'], $helper)) { print '<span style="color:#828282">' . '(' . date( 'D H:i:s', $list['StringyChat_time'] ) . ') ' . '</span>' . $form . ' ' . '<span style="color:blue">' . '<b>' . $list['StringyChat_name'] . '</span>' . '<span style="color:green">' . ' ' . '[H]' . '</span>' . '</b>' . ' : ' . '<span style="color:blue">' . filterBadWords(wordwrap($list['StringyChat_message'], $line_length,"<br>\n")) . '</span>' . '<span style="color:#d8d8d8">' . " - " . $ipi . '</span>' . '<br />'; } elseif (in_array($list['StringyChat_ip'], $globalhelper)) { print '<span style="color:#828282">' . '(' . date( 'D H:i:s', $list['StringyChat_time'] ) . ') ' . '</span>' . $form . ' ' . '<span style="color:blue">' . '<b>' . $list['StringyChat_name'] . '</span>' . '<span style="color:green">' . ' ' . '[G.H]' . '</span>' . '</b>' . ' : ' . '<span style="color:blue">' . filterBadWords(wordwrap($list['StringyChat_message'], $line_length,"<br>\n")) . '</span>' . '<span style="color:#d8d8d8">' . " - " . $ipi . '</span>' . '<br />'; } else { print '<span style="color:#828282">' . '(' . date( 'D H:i:s', $list['StringyChat_time'] ) . ') ' . '</span>' . $form . ' ' . '<span style="color:#0365B8">' . '<b>' . $list['StringyChat_name'] . '</b>' . '</span>' . ' : ' . filterBadWords(wordwrap($list['StringyChat_message'], $line_length,"<br>\n")) . '<span style="color:#d8d8d8">' . " - " . $ipi . '</span>' . '<br />'; } } This printout will show all the users matching the testip within the admin array, I got the same printout for moderators as well. Well the real problem I'm experiencing right now is to use my database to calculate the color it should display. I got 3 tables at this stage Table 1: Users2 Layout ID, Username, mxitid, nick, phone and rank This table is where I store the usernames of people if they register and give them the rank value of 6 Table 2: ranks_colors Layout Type, rank, color1, color2, color3, color4 Admin, 1, red, blue, orange, purple Mod, 2, green, pink, yellow, black etc... upto 6 wich is Normal This table is where I specify Type like Administrator rank 1 and 4 colors he can use within hes text printout Table 3: StringyChat Layout id, ip, name, message, time, device, rank This is basically where the messages that is being send will be stored each in its own row with the specified rank number. The problem I'm currently struggling with is the ranks I want each rank type font to be different for example in the above Table 2. If admin all the messages send by admin must be red. All the mod messages must be green etc. How can I change from the array way to mysql by using the ranks system?
  14. I have this table: CREATE TABLE _HRatortbl ( Hor_id INT unsigned NOT NULL auto_increment, Hicator_title longtext NOT NULL, Primary KEY(HRindicator_id), UNIQUE KEY ix_length_HRindicator_title (HRindicator_title(255)) )ENGINE=InnoDB DEFAULT CHARSET=utf8 why is it that it cannot differentiate between: Legally stipulated Age for marriage and legally stipulated age for mariage I found them both iniside the table .Is there another way to do this on text fields
  15. So, I currently have a script (in beta mode, only works when the sun shines), that can upload an image and store directly in a mysql database (using the BLOB data type); the script is also able to retrieve the BLOB data and display them vertically on the page; I actually need to dsiplay them horizontally across the page instead. So currently the retrieved images are printed in this format: 1 2 3 4 5 6 7 8 and I need it to print this way: 1 2 3 4 5 6 7 8 sounds like a for loop somewhere... any takers on how to implement the feature?
  16. <?php $database = array(); $database['host'] = "localhost"; $database['port'] = '3306'; $database['name'] = "forumtest"; $database['username'] = "root"; $database['password' = "Password"; $link = mysql_connect($database['host], $database['username'], $database['password']); if ($link) { echo "Connected to a database".$database['name']; }else{ echo connect to a database"$database['name'] . "failed<br/>"; echo "Error: ".mysql_error(); } ?> This is my code for a test to connect to a database however, there seems to be a problem with the code as when I try to connect it just gives me a error 500. I would appreciate any help.
  17. I have a problem . I 've been trying for a long time to make an update for php mysql to change the data. but every time I do not manage to make it work with a form. but it works if I only if I put this ($ sql = "UPDATE users SET username = 'value' WHERE id = 10 " ; ) so it only works when I put the value of the id. but I want in an html form to indicate what I want to change and what id goes. but I have tried so long that I do not feel like I so want someone help me. make the same database and same as my records and make the code and test it if it works show me please my database name : web test my table called : users my records are called : id int ( 11) AUTO_INNCREMENT username , varchar ( 255 ) password , varchar ( 255 ) first_name , varchar ( 255 ) last_name , varchar ( 255 ) email, varchar ( 255 ) Age, int ( 11) Look, my update.php is like this now <?php $servername = "localhost"; $username = "root"; $password = "....."; $dbname = "webtest"; $conn = new mysqli($servername, $username, $password, $dbname); if ($conn->connect_error) { die("Connection failed: " . $conn->connect_error); } $sql = "UPDATE users SET password='cotton candy' WHERE id=10"; if ($conn->query($sql) === TRUE) { echo "Record updated successfully"; } else { echo "Error updating record: " . $conn->error; } $conn->close(); ?> but now i have still have to go into the php file to change the valeu or the id but i looked on site and youtube how to put it in a simple html form but it still does not work. i want it in a html from. I want that when I enter the ID that the data of the user appears and that I can change any valeu separately. please help me out!!
  18. hello dear php-experts, i am currently workin on a litte contact manager. and i want to store the data in a db. Note: i work with Python at the moment. So this is related to Python since i want to dive into Peewee. What is aimed: i am musing on how to insert a list of tuples into the db using Peewee (/note the pyton object-layer-model). My db is setup as follows: class Stats(Model): name = TextField(index=True) gender = TextField() age = TextField() city = TextField() state = TextField() class Meta: database = db My list of tuples looks like this: records = [("Joe Smoe", "Male", 34, "Joe Fracer", " Staten Island")], [("Jane Doe", "Female", 21, "Jane bell", "Capetown")] Well - i wonder how to work out the concrete db-inserts. Should I iterate over the list inserting one row at a time? Can this be bulk inserted or does it need to be made into a dictionary to achieve that solution? i have rows like so (see below). I can do this manually. Of course: rows = [ {"name": "Joe Jackson", "gender": "Male", "age": 44, "city": "Billi Kid ", "state": "Mosqow"}, {"name": "Howard Foster", "gender": "Female", "age": 22, "city": "Jane Austen", "state" :"Capetown"}, ... ] Well - one can do this manually. But honestly: isnt it much better and a lot more efficient to use peewee's Model.insert_many function to do a bulk insert of the data into the database - well with a single SQL INSERT statement? Love to hear from you experts, your dilbert!
  19. Hey guys so I am making an online App website. So I need to it to be so some apps will be added by default. Then users can search for apps and "install" apps but really just have them show up on the homepage. So how would the database design work like have a field that is updated to 1 if the user has it installed and 0 if its not. And then do like an if statement to pull all the fields with 1 where username='$username'. And when it pulls it should I add like a URL field to it to so when it pulls the app information there will be a link to the app url. Could somebody please help me with what I should do because I am really confused on what design and if statements I should use
  20. I have a Mysql table where I store prices of a product. I have the values in "varchar" format because I needed to include "decimals" in the prices(for eg. 15.30) and "int" doesn't allow that. Having done that, when ever I filter the products by prices in Ascending or Descending order, they don't show up in proper order. It seems like the decimal in the prices is messing up the order. Is there a way to fix this so that the php query can filter the prices in proper order despite the decimals? Here's the eg of the query. $get_records = $db->prepare("SELECT * FROM records ORDER BY records.price DESC");
  21. I'm trying to convert these 2 existing select queries: //existing records that are expired $expiredCheck = " SELECT sku_id, dealer_id, expire_date FROM dealerplacetest p INNER JOIN skus s ON p.sku_id = s.id WHERE p.dealer_id = :DEALER AND s.build = :build AND s.cov = :cov AND s.col = :col AND p.expire_date <= date_add(convert(:ship,date), interval 7 day) "; //existing records that are not expired $validCheck = " SELECT sku_id, dealer_id, expire_date FROM dealerplacetest p INNER JOIN skus s ON p.sku_id = s.id WHERE p.dealer_id = :DEALER AND s.build = :build AND s.cov = :cov AND s.col = :col AND p.expire_date > date_add(convert(:ship,date), interval 7 day) "; $checkExisting = $MysqlConn->prepare($expiredCheck); $checkExistingValid = $MysqlConn->prepare($validCheck); $existingRslt = $checkExisting->execute($values2); $count3 = $checkExisting->fetch(PDO::FETCH_ASSOC); $existingVldRslt = $checkExistingValid->execute($values2); $count4 = $checkExistingValid->fetch(PDO::FETCH_ASSOC); Into one general select like so: //select records alltogether, check for expiration later in loop $expiredCheck = " SELECT sku_id, dealer_id, expire_date FROM dealerplacetest p INNER JOIN skus s ON p.sku_id = s.id WHERE p.dealer_id = :DEALER AND s.build = :build AND s.cov = :cov AND s.col = :col "; $checkExisting = $MysqlConn->prepare($expiredCheck); And then use my existing bound parameters ($values2) to formulate an if statement that will replace the previously existing expiration date check. Basically I've taken the 2 previous expiration date checks from the query and plugged them into the if statement but it fails the '7' in my day interval. I feel like there may be a different syntax standard to use here but I can't seem to find the proper solution. I'm trying to create a $count3 variable for the first check and a $count4 variable for the 2nd check. Here are params and if statement: $values2 = [ ":DEALER" => $row2["DEALER"], ":build" => $row2["build"], ":cov" => $row2["cov"], ":col" => $row2["col"], ":ship" => $row2["ship"], ]; $existingRslt = $checkExisting->execute($values2); while($existingRow = $checkExisting->fetch(PDO::FETCH_ASSOC)){ if($existingRow["expire_date"] <= date_add(convert(":ship",date), interval 7 day){ $count3 = $checkExisting->fetch(PDO::FETCH_ASSOC); }elseif($existingRow["expire_date"] > date_add(convert(":ship",date), interval 7 day)){ $count4 = $checkExisting->fetch(PDO::FETCH_ASSOC); } } I'm just trying to consolidate SELECT queries if possible. What am I doing wrong?
  22. Hi all !! I have the following three data tables : mysql> select * from franch; +-----+ | fid | +-----+ | 3 | | 5 | | 7 | +-----+ 3 rows in set (0.00 sec) mysql> select * from master; +-----+-----+ | xid | mid | +-----+-----+ | 5 | 4 | | 7 | 6 | +-----+-----+ 2 rows in set (0.01 sec) mysql> select * from admin; +-----+-----+ | xid | aid | +-----+-----+ | 3 | 2 | | 4 | 2 | +-----+-----+ These are connected on common fields and I was trying to linearize the relationship between them using this query : mysql> SELECT vc.aid, vd.mid as mid, ve.fid as franch FROM franch as ve LEFT JOIN master as vd ON ve.fid = vd.xid LEFT JOIN admin as vc ON vd.mid = vc.xid; which gives the following , almost correct, output. +------------+------------+--------------+ | aid | mid | franch | +------------+------------+--------------+ | NULL | NULL | 3 | | 2 | 4 | 5 | | NULL | 6 | 7 | +------------+------------+--------------+ what I want to achieve as output is this ( difference HIGHLIGHTED in RED ): +---------+---------+---------+ | aid | mid | franch | +---------+---------+---------+ | 2 | NULL | 3 | | 2 | 4 | 5 | | NULL | 6 | 7 | +---------+---------+---------+ In the first since there is no corresponding vale for mid in the master table it produces the null value. Here there has to be a way that when such a null value is produced, the franch should check for a corresponding value in the admin table instead. Thanks all for any help on achieving this !!!
  23. I have a table full of mac addresses in this format 80828704B0EE I need a method to run a query that will output this format 80:82:87:04:B0:EE I either need to insert the result of the some query that is formatting the existing mac addresses to another field or use a query to format the mac addresses on the fly. I need to create a csv file from this query. I have all that code it is just making the query to format it the way I need it. Here is a query I found that does the trick except that I get two columns, the original and the formatted one. How can I remove the mac column that this outputs? SELECT mac, concat(left(mac,2), ":",substring(mac,3,2), ":" , substring(mac,5,2), ":",substring(mac,7,2), ":",substring(mac,9,2), ":", right(mac,2)) as mac_formatted FROM phones Thanks
  24. I have to say that this is not a coding question but is something i would like to hear your opinion: I am building a web service where the user registers and then can have access to this service. During his/her time using the service, the user collects some points according to his/her actions (similar to what Stackoverflow does). Question 1: Do we need to offer both DEACTIVATION and DELETE account? Question 2: In case of DEACTIVATION should i offer an option to re-activate their previous account [with all points gathered so far]? Meaning all their previous data are kept in the database, just change some flags? Is there a best practice for this? Question 3: In case of DELETE account, how do i proceed? Do i delete all database data regading that user? What if a user wants to delete his/her account because he/she gathered a lot of negative points and wants to re-register with the same email just with no negative points? Question 4: Do other services (like Facebook or Google+) delete any data from their databases even if the user wants to delete his/her account? Are there any legal issues? Thanks!
  25. Say I have a table called artists with these fields (artistid, rank). Then say I have an array called $rankadjustments with a value for each artist (like 1, 7, 3,-3, 5, 9, etc). I am doing a MYSQL query that gets the info from artists table and sorts according to the rank field like this... $sql = "SELECT * FROM artists ORDER BY rank"; Easy enough. But what if I would like to bring that data back sorted by (rank + rankadjustment). For example, if the artist ranked 1st had a rank of "1" from mysql, but had a rankadjustment of "5" from the rankadjustment array, his "true" rank would be "6". Again, rankadjustment is NOT a field in my table, otherwise it would obviously be simple. It's calculated on the fly and stored in an array. FYI, the array has an index with their "artistid". For example, $rankadjustment[341][8] would be the artist with an artistid of "341" has a rank adjustment of 8. Is there a way to do this IN the query itself? It doesn't seem possible but wanted to find out for sure. If not, what is best way to do? I assume... Get the data sorted JUST by rank and put it all into an array, then create a new array that adds rank to rankadjustment and reorder by the "new" rank amount? I guess that wouldn't be too bad but again, wanted to make sure I'm not missing something that would allow me to do it all in the query (or just more efficiently). Thanks!
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