Python mysql check for duplicate before insert

Python mysql check for duplicate before insert

By : user3861329
Date : November 19 2020, 07:01 PM
wish helps you You can either find out whether it's in there first, by SELECTing by url, or you can make the url field unique:
code :

Share : facebook icon twitter icon
How to check if tow columns are duplicate when INSERT data in MySQL?

How to check if tow columns are duplicate when INSERT data in MySQL?

By : shm
Date : March 29 2020, 07:55 AM
Hope that helps You can also create a stored procedure and check if the file_id already exists or not:
code :
drop if procedure exists check_user_files;
create procedure check_user_files
    in p_file_id smallint
    declare v_success tinyint unsigned default 0;

    if not exists (select 1 from user_files where file_id = p_file_id) then

        [....] -- insert statement


        [....] -- remove or update

    end if;

    select v_success as success;
mysql insert on duplicate key update, check which one occurred

mysql insert on duplicate key update, check which one occurred

By : user2252359
Date : March 29 2020, 07:55 AM
will be helpful for those in need From the PHP manual mysql_affected_rows :
MySQL/PHP check for duplicate before INSERT

MySQL/PHP check for duplicate before INSERT

By : Martin Slade
Date : March 29 2020, 07:55 AM
Hope this helps Your code creates a race condition if two people attempt to create the same ame at the same time and you're not handling the fallout properly.
If you have set the SERVER_NAME column to UNIQUE then you needn't check for the existence of a server name before you perform your INSERT as MySQL will do that for you. Use INSERT IGNORE ad check the number of affected rows after the query has executed to find out if it worked:
code :
//Create connection to database using mysqli
$conn = new mysqli($dbhost, $dbuser, $dbpass, $db);

//Set variables according to user input on previous form
$Server_Name = $_POST['Server_Name'];

//Define the INSERT statement with IGNORE keyword
    $stmt = "INSERT IGNORE INTO dcr_master (Server_Name, Description,..., ... , ... )";
    if ($conn->query($stmt) === false) {
        die("Database error:".$conn->error);

// Check for success
    if ($conn->affected_rows == 0) {
        print "<br>Error! <p></p>";
        echo "" . $Server_Name . " already exists in the DCR";
        print "<p></p>Please check the Server Name and try again";
    } else {

//Success and return new id
        echo "<br><p></p>Record Added!<p></p>";
        echo "New id: " . $conn->insert_id;
PHP to insert data (with duplicate check) to MySQL not working

PHP to insert data (with duplicate check) to MySQL not working

By : adhi
Date : March 29 2020, 07:55 AM
this one helps. I want to check for a duplicate before I insert data to my table. , Check the change that is stated by comment and try this:-
code :


$success = false;

try {

     $con = new PDO( DB_DSN, DB_USERNAME, DB_PASSWORD );
     $con->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );
     $sql = "INSERT INTO tbl_profileavatars (user_name,img_src) VALUES (:contactname,:imagepath) ON DUPLICATE KEY UPDATE user_name=:contactname,img_src =:imagepath";

     $stmt = $conn->prepare($sql);
     error_log("\n statemt prepared".$stmt, 3, "logs/my-errors.log");
     // do change like this because when you want to pass multiple value 
     // then you need to pass in form of array
     $success = true;
     return "Thank you for contacting us .Our representatives will getback to you within 24 hours <br/> <a href='contact.php'>go back</a>";

    }catch( PDOException $e ) {
      print_r ( $e );
      error_log("\n exception \n".$e, 3, "logs/my-errors.log");
      return $e->getMessage();
Insert Batch php mysql with check duplicate and sum values of field duplicate

Insert Batch php mysql with check duplicate and sum values of field duplicate

By : user2472083
Date : March 29 2020, 07:55 AM
With these it helps Good option will to pass only data to DB that you want to insert. All the data cleaning task can be done in controller.
code :
// Create a data array and add all info
$data = [];
//if user does not exist add it in array
if (empty($dt_exist($id))) {
  $data[$ID_USER] = array(
                  'COA_CODE' => $key['COA_CODE'],
                  'AMOUNT' => $amount,
                  'MODUL' => $modul,
                  'USER_ID' => $ID_USER
else {
      //if user exist in $data just modify the amount
      if (!empty($data[$ID_USER])) {
        $data[$ID_USER]['AMOUNT'] += $dt_exsis['AMOUNT']; 
      else {
        // if user does not exist in data create add all info
        $data[$dt_exsis['ID_USER']] = array(
                  'COA_CODE' => $dt_exsis['COA_CODE'],
                  'AMOUNT' => $dt_exsis['amount'],
                  'MODUL' => $dt_exsis['modul'],
                  'USER_ID' => $dt_exsis['ID_USER']
Related Posts Related Posts :
  • Removing non-breaking spaces from strings using Python
  • Is there a way to backup everything in an app-engine blobstore?
  • Process a set of files from a source directory to a destination directory in Python
  • How to know if optparse option was passed in the command line or as a default
  • Rewriting a for loop in pure NumPy to decrease execution time
  • Comparing a time delta in python
  • Find next lower item in a sorted list
  • MySQLdb not INSERTING, _mysql does fine
  • Scipy Negative Distance? What?
  • What are the common patterns in web programming?
  • Percent signs in windows path
  • How to add a random number to a subsection of a numpy array?
  • How to generate all the values of an iterable besides the last few?
  • Searching by both class and range in XPath
  • Python code execution in Perl interpreter
  • Best Way to Include Variable in Python3
  • Serialize the @property methods in a Python class
  • What is the most platform- and Python-version-independent way to make a fast loop for use in Python?
  • Good way to edit the previous defined class in ipython
  • Bounced email on Google App Engine
  • Search jpeg files using python
  • Dynamically create class attributes
  • python unichr problem
  • Python beginner, strange output problem
  • Python: Finding a value in 1 list and finding that corresponding index in another list
  • can't install mysqlclient on mac os x mojave
  • Error indicates flattened dimensions when loading pre-trained network
  • how to replace underlines with words?
  • Adding through iteration
  • Use OpenCV on deployed Flask app (Heroku)
  • How to skip interstitial in a django view if a user hits the back button?
  • Any Naive Bayesian Classifier in python?
  • Python 2.5.2: remove what found between two lines that contain two concrete strings
  • Python 2.5.2 script that add "The function starts here" to all the functions of the files of a directory
  • HttpResponseRedirect question
  • Python socket error on UDP data receive. (10054)
  • Encoding issues with cloud ml
  • numpy.where - Weird behaviour: new elements spawning from nowhere?
  • I can't move my player in pygame, can you figure why?
  • Weird error I receive from Tkinter in Python
  • Using a Zapier Custom Request Webhook with JSON Web Tokens
  • Keras: Use categorical_crossentropy without one-hot encoded array of targets
  • Does python's httplib.HTTPConnection block?
  • Do alternate python implementation version numbers imply that they provide the same syntax?
  • Searching for specific HTML string using Python
  • python sax error "junk after document element"
  • MySql: How to know if an entry is compressed or not
  • Return a list of imported Python modules used in a script?
  • Returning a list in this recursive coi function in python
  • Python2.6 Decimal to Octal
  • Appengine Apps Vs Google bot web crawler
  • Changing models in django results in broken database?
  • Global variable functions
  • Using lambda inside a function
  • How to open a file, replace some strings, and save updates to the same file?
  • How to move the beginning of an input to the and?
  • If else fill variable if empty list
  • Pandas: Find and print all floats in column
  • sqlite3.OperationalError: database is locked - non-threaded application
  • How to implement mib module in net-snmp with python?
  • shadow
    Privacy Policy - Terms - Contact Us © 35dp-dentalpractice.co.uk