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root
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home
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system
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database
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mssql
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Upload File:
files >> //proc/self/root/home/papecmvm/www/system/database/drivers/mssql/mssql_forge.php
<?php /** * CodeIgniter * * An open source application development framework for PHP * * This content is released under the MIT License (MIT) * * Copyright (c) 2014 - 2019, British Columbia Institute of Technology * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * @package CodeIgniter * @author EllisLab Dev Team * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/) * @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/) * @license https://opensource.org/licenses/MIT MIT License * @link https://codeigniter.com * @since Version 1.3.0 * @filesource */ defined('BASEPATH') OR exit('No direct script access allowed'); /** * MS SQL Forge Class * * @package CodeIgniter * @subpackage Drivers * @category Database * @author EllisLab Dev Team * @link https://codeigniter.com/user_guide/database/ */ class CI_DB_mssql_forge extends CI_DB_forge { /** * CREATE TABLE IF statement * * @var string */ protected $_create_table_if = "IF NOT EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nCREATE TABLE"; /** * DROP TABLE IF statement * * @var string */ protected $_drop_table_if = "IF EXISTS (SELECT * FROM sysobjects WHERE ID = object_id(N'%s') AND OBJECTPROPERTY(id, N'IsUserTable') = 1)\nDROP TABLE"; /** * UNSIGNED support * * @var array */ protected $_unsigned = array( 'TINYINT' => 'SMALLINT', 'SMALLINT' => 'INT', 'INT' => 'BIGINT', 'REAL' => 'FLOAT' ); // -------------------------------------------------------------------- /** * ALTER TABLE * * @param string $alter_type ALTER type * @param string $table Table name * @param mixed $field Column definition * @return string|string[] */ protected function _alter_table($alter_type, $table, $field) { if (in_array($alter_type, array('ADD', 'DROP'), TRUE)) { return parent::_alter_table($alter_type, $table, $field); } $sql = 'ALTER TABLE '.$this->db->escape_identifiers($table).' ALTER COLUMN '; $sqls = array(); for ($i = 0, $c = count($field); $i < $c; $i++) { $sqls[] = $sql.$this->_process_column($field[$i]); } return $sqls; } // -------------------------------------------------------------------- /** * Field attribute TYPE * * Performs a data type mapping between different databases. * * @param array &$attributes * @return void */ protected function _attr_type(&$attributes) { if (isset($attributes['CONSTRAINT']) && strpos($attributes['TYPE'], 'INT') !== FALSE) { unset($attributes['CONSTRAINT']); } switch (strtoupper($attributes['TYPE'])) { case 'MEDIUMINT': $attributes['TYPE'] = 'INTEGER'; $attributes['UNSIGNED'] = FALSE; return; case 'INTEGER': $attributes['TYPE'] = 'INT'; return; default: return; } } // -------------------------------------------------------------------- /** * Field attribute AUTO_INCREMENT * * @param array &$attributes * @param array &$field * @return void */ protected function _attr_auto_increment(&$attributes, &$field) { if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE && stripos($field['type'], 'int') !== FALSE) { $field['auto_increment'] = ' IDENTITY(1,1)'; } } }
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