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| 1 | <?php |
| 2 | /** |
| 3 | * |
| 4 | * This file is part of the phpBB Forum Software package. |
| 5 | * |
| 6 | * @copyright (c) phpBB Limited <https://www.phpbb.com> |
| 7 | * @license GNU General Public License, version 2 (GPL-2.0) |
| 8 | * |
| 9 | * For full copyright and license information, please see |
| 10 | * the docs/CREDITS.txt file. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | namespace phpbb\db\migration\data\v32x; |
| 15 | |
| 16 | class user_notifications_table_remove_duplicates extends \phpbb\db\migration\migration |
| 17 | { |
| 18 | public static function depends_on() |
| 19 | { |
| 20 | return array( |
| 21 | '\phpbb\db\migration\data\v32x\user_notifications_table_temp_index', |
| 22 | ); |
| 23 | } |
| 24 | |
| 25 | public function update_data() |
| 26 | { |
| 27 | return array( |
| 28 | array('custom', array(array($this, 'remove_duplicates'))), |
| 29 | ); |
| 30 | } |
| 31 | |
| 32 | public function remove_duplicates() |
| 33 | { |
| 34 | $insert_buffer = new \phpbb\db\sql_insert_buffer($this->db, $this->table_prefix . 'user_notifications'); |
| 35 | |
| 36 | $sql = "SELECT item_type, item_id, user_id, method, MAX(notify) AS notify |
| 37 | FROM {$this->table_prefix}user_notifications |
| 38 | GROUP BY item_type, item_id, user_id, method |
| 39 | HAVING COUNT(item_type) > 1"; |
| 40 | |
| 41 | $result = $this->sql_query($sql); |
| 42 | while ($row = $this->db->sql_fetchrow($result)) |
| 43 | { |
| 44 | // Delete the duplicate entries |
| 45 | $this->sql_query("DELETE FROM {$this->table_prefix}user_notifications |
| 46 | WHERE user_id = {$row['user_id']} |
| 47 | AND item_type = '{$row['item_type']}' |
| 48 | AND method = '{$row['method']}'"); |
| 49 | |
| 50 | // And re-insert as a single one |
| 51 | $insert_buffer->insert($row); |
| 52 | } |
| 53 | $this->db->sql_freeresult($result); |
| 54 | } |
| 55 | } |