INSERT IGNORE using Codeigniter

Question

I am trying to insert a few rows into the MySQL table using Codeigniter and Active Records.

PHP Code

$data = array(\'......\');  //          


        

Answer 1

solution :

$sql = $this->db->set($data)->get_compiled_insert($table);
$sql = str_replace('INSERT INTO', 'INSERT IGNORE INTO', $sql);
$this->db->query($sql);

works in codeigniter 3.0.6 :)

Answer 2

I too had same issue what helped me is :

Open : Codeigniter/system/database/DB_query_builder.php :

find

protected function _insert_batch($table, $keys, $values)
    {
        return 'INSERT INTO '.$table.' ('.implode(', ', $keys).') VALUES '.implode(', ', $values);
    }

and replace with :

protected function _insert_batch($table, $keys, $values)
{
    return 'INSERT IGNORE INTO '.$table.' ('.implode(', ', $keys).') VALUES '.implode(', ', $values);
}

Answer 3

As I also encountered a similar problem, I finally chose a little bit more "elegant" solution like the one below. A complete insert_batch query that is something that uses Rocket's answer AND transactions:

$this->db->trans_start();
foreach ($items as $item) {
       $insert_query = $this->db->insert_string('table_name', $item);
       $insert_query = str_replace('INSERT INTO', 'INSERT IGNORE INTO', $insert_query);
       $this->db->query($insert_query);
    }
$this->db->trans_complete();

That will also wrap everything on a transaction resulting on a faster query like doing a insert_batch(). Well not as fast as insert_batch() but faster than a single query for each entry of course. I hope it will help someone.

Answer 4

This is basically a modification of Rocket Hazmat's suggestion, which is great, but doesn't take into account the fact that str_replace operates on the entire string and might inadvertently affect the data.

$insert_query = $this->db->insert_string('my_table', $data);
$insert_query = preg_replace('/INSERT INTO/','INSERT IGNORE INTO',$insert_query,1);
$this->db->query($insert_query);

Answer 5

Avoid duplicate rows by setting a unique key in the database table for at least one of the fields.

Answer 6

add to file DB_query_builder.php

this 2 functions

public function insert_ignore_batch($table = '', $set = NULL, $escape = NULL) {
    if ($set !== NULL)
    {
        $this->set_insert_batch($set, '', $escape);
    }

    if (count($this->qb_set) === 0)
    {
        // No valid data array. Folds in cases where keys and values did not match up
        return ($this->db_debug) ? $this->display_error('db_must_use_set') : FALSE;
    }

    if ($table === '')
    {
        if ( ! isset($this->qb_from[0]))
        {
            return ($this->db_debug) ? $this->display_error('db_must_set_table') : FALSE;
        }

        $table = $this->qb_from[0];
    }

    // Batch this baby
    $affected_rows = 0;
    for ($i = 0, $total = count($this->qb_set); $i < $total; $i += 100)
    {
        $this->query($this->_insert_ignore_batch($this->protect_identifiers($table, TRUE, $escape, FALSE), $this->qb_keys, array_slice($this->qb_set, $i, 100)));
        $affected_rows += $this->affected_rows();
    }

    $this->_reset_write();
    return $affected_rows;
}

protected function _insert_ignore_batch($table, $keys, $values) {
    return 'INSERT IGNORE INTO '.$table.' ('.implode(', ', $keys).') VALUES '.implode(', ', $values);
}

using:

$this->db->insert_ignore_batch('TableName', $data);