ON DUPLICATE KEY UPDATE [duplicate] - php

Question

I have a CodeIgniter/PHP Model and I want to insert some data into the database.
However, I have this set in my 'raw' SQL query:
ON DUPLICATE KEY UPDATE duplicate=duplicate+1
I am using CodeIgniter and am converting all my previous in-controller SQL queries to ActiveRecord. Is there any way to do this from within the ActiveRecord-based model?
Thanks!
Jack

Answer 1

You can add the "ON DUPLICATE" statement without modifying any core files.
$sql = $this->db->insert_string('table', $data) . ' ON DUPLICATE KEY UPDATE duplicate=LAST_INSERT_ID(duplicate)';
$this->db->query($sql);
$id = $this->db->insert_id();
I hope it's gonna help someone.

Answer 2

The below process work for me in Codeigniter 3.0.6
public function updateOnDuplicate($table, $data ) {
if (empty($table) || empty($data)) return false;
$duplicate_data = array();
foreach($data AS $key => $value) {
$duplicate_data[] = sprintf("%s='%s'", $key, $value);
}
$sql = sprintf("%s ON DUPLICATE KEY UPDATE %s", $this->db->insert_string($table, $data), implode(',', $duplicate_data));
$this->db->query($sql);
return $this->db->insert_id();
}

Answer 3

Following the snippet linked by Pickett, I made a few modifications to:
1) Update it to use the new Query Builder (CI 3), formerly known as Active Record.
2) You can now pass an associative array (key => value) or an array of associative arrays. In the second form, it performs a multi-update.
I only tested it with mysqli, and it works well.
This piece of code goes in system/database/drivers/mysqli/mysqli_driver.php
function _duplicate_insert($table, $values)
{
$updatestr = array();
$keystr = array();
$valstr = array();
foreach($values as $key => $val)
{
$updatestr[] = $key." = ".$val;
$keystr[] = $key;
$valstr[] = $val;
}
$sql = "INSERT INTO ".$table." (".implode(', ',$keystr).") ";
$sql .= "VALUES (".implode(', ',$valstr).") ";
$sql .= "ON DUPLICATE KEY UPDATE ".implode(', ',$updatestr);
return $sql;
}
function _multi_duplicate_insert($table, $values)
{
$updatestr = array();
$keystr = array();
$valstr = null;
$entries = array();
$temp = array_keys($values);
$first = $values[$temp[0]];
foreach($first as $key => $val)
{
$updatestr[] = $key." = VALUES(".$key.")";
$keystr[] = $key;
}
foreach($values as $entry)
{
$valstr = array();
foreach($entry as $key => $val)
{
$valstr[] = $val;
}
$entries[] = '('.implode(', ', $valstr).')';
}
$sql = "INSERT INTO ".$table." (".implode(', ',$keystr).") ";
$sql .= "VALUES ".implode(', ',$entries);
$sql .= "ON DUPLICATE KEY UPDATE ".implode(', ',$updatestr);
return $sql;
}
And this goes into the /system/database/DB_query_builder.php file:
function on_duplicate($table = '', $set = NULL )
{
if ( ! is_null($set))
{
$this->set($set);
}
if (count($this->qb_set) == 0)
{
if ($this->db_debug)
{
return $this->display_error('db_must_use_set');
}
return FALSE;
}
if ($table == '')
{
if ( ! isset($this->qb_from[0]))
{
if ($this->db_debug)
{
return $this->display_error('db_must_set_table');
}
return FALSE;
}
$table = $this->qb_from[0];
}
$is_multi = false;
foreach (array_keys($set) as $k => $v) {
if ($k === $v) {
$is_multi = true; //is not assoc
break;
}
}
if($is_multi)
{
$sql = $this->_multi_duplicate_insert($this->protect_identifiers($table, TRUE, NULL, FALSE), $this->qb_set );
}
else
{
$sql = $this->_duplicate_insert($this->protect_identifiers($table, TRUE, NULL, FALSE), $this->qb_set );
}
$this->_reset_write();
return $this->query($sql);
}
Then you can do this for a single row insert/update:
$this->db->on_duplicate('table', array('column1' => 'value', 'column2' => 'value'));
Or this for a multi insert/update:
$this->db->on_duplicate('table', array(
array('column1' => 'value', 'column2' => 'value'),
array('column1' => 'value', 'column2' => 'value')
));

Answer 4

You can tweak the active record function with minimal addition:
DB_driver.php add inside the class:
protected $OnlyReturnQuery = false;
public function onlyReturnQuery($return = true)
{
$this->OnlyReturnQuery = $return;
}
find function query( ...and add at the very beginning:
if ($this->OnlyReturnQuery) {
$this->OnlyReturnQuery = false;
return $sql;
}
and finally in DB_active_rec.php add function:
public function insert_or_update($table='', $data=array())
{
$this->onlyReturnQuery();
$this->set($data);
$insert = $this->insert($table);
$this->onlyReturnQuery();
$this->set($data);
$update = $this->update($table);
$update = preg_replace('/UPDATE.*?SET/',' ON DUPLICATE KEY UPDATE',$update);
return $this->query($insert.$update);
}
Now you can use it as:
$this->db->insert_or_update('table',array $data);
Pros:
uses all the active record validation
Cons:
it is not the best (the most proper) way of extending the function, because if you are planning to update these files, you will have to redo the procedure.

Answer 5

The link to the forum thread above is broken. I don't know of a better way than just using db->query for the call, if someone has a better solution, please post that.
$result = $this->CI->db->query(
"INSERT INTO tablename (id, name, duplicate) VALUES (1, 'Joe', 1) ".
"ON DUPLICATE KEY UPDATE duplicate=duplicate+1");
I hope this helps someone looking for a solution to this.

Answer 6

Below is a code snippet I use everytime for update on duplicates:
$sql = "insert into table_name (id, name) values(".$id.",'".$name."') on duplicate key update id=".$id.",name='".$name."'";
//Executing queries
$result = $this->db->query($sql, array($id, $name));
Note: column id must be primary or unique

Answer 7

Using $this->db->query() and parameters, this is how I do it. the first 4 parameters are for the insert part and the last three parameters are repeated for the on duplicate key update part.
$sql = "insert into application_committee ".
"(application_id, member1_id, member2_id, member3_id) values (?, ?, ?, ?)".
" on duplicate key update member1_id = ?, member2_id = ?, member3_id = ?";
$this->db->query($sql, array($appid, $member_1, $member_2, $member_3,
$member_1, $member_2, $member_3);

Answer 8

Simply done -
$updt_str = '';
foreach ($insert_array as $k => $v) {
$updt_str = $updt_str.' '.$k.' = '.$v.',';
}
$updt_str = substr_replace($updt_str,";", -1);
$this->db->query($this->db->insert_string('table_name', $insert_array).' ON DUPLICATE KEY UPDATE '.$updt_str);