You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
84 lines
3.1 KiB
84 lines
3.1 KiB
<?php |
|
/** |
|
* QueryBuilder class file. |
|
* |
|
* @author Qiang Xue <qiang.xue@gmail.com> |
|
* @link http://www.yiiframework.com/ |
|
* @copyright Copyright © 2008-2012 Yii Software LLC |
|
* @license http://www.yiiframework.com/license/ |
|
*/ |
|
|
|
namespace yii\db\dao\mysql; |
|
|
|
/** |
|
* QueryBuilder builds a SQL statement based on the specification given as a [[Query]] object. |
|
* |
|
* @author Qiang Xue <qiang.xue@gmail.com> |
|
* @since 2.0 |
|
*/ |
|
class QueryBuilder extends \yii\db\dao\QueryBuilder |
|
{ |
|
/** |
|
* @var array the abstract column types mapped to physical column types. |
|
*/ |
|
public $typeMap = array( |
|
'pk' => 'int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY', |
|
Driver::TYPE_STRING => 'varchar(255)', |
|
Driver::TYPE_TEXT => 'text', |
|
Driver::TYPE_SMALLINT => 'smallint(6)', |
|
Driver::TYPE_INTEGER => 'int(11)', |
|
Driver::TYPE_BIGINT => 'bigint(20)', |
|
Driver::TYPE_FLOAT => 'float', |
|
Driver::TYPE_DECIMAL => 'decimal', |
|
Driver::TYPE_DATETIME => 'datetime', |
|
Driver::TYPE_TIMESTAMP => 'timestamp', |
|
Driver::TYPE_TIME => 'time', |
|
Driver::TYPE_DATE => 'date', |
|
Driver::TYPE_BINARY => 'blob', |
|
Driver::TYPE_BOOLEAN => 'tinyint(1)', |
|
Driver::TYPE_MONEY => 'decimal(19,4)', |
|
); |
|
|
|
/** |
|
* Builds a SQL statement for renaming a column. |
|
* @param string $table the table whose column is to be renamed. The name will be properly quoted by the method. |
|
* @param string $name the old name of the column. The name will be properly quoted by the method. |
|
* @param string $newName the new name of the column. The name will be properly quoted by the method. |
|
* @return string the SQL statement for renaming a DB column. |
|
*/ |
|
public function renameColumn($table, $name, $newName) |
|
{ |
|
$quotedTable = $this->driver->quoteTableName($table); |
|
$row = $this->connection->createCommand('SHOW CREATE TABLE ' . $quotedTable)->queryRow(); |
|
if ($row === false) |
|
throw new CDbException(Yii::t('yii', 'Unable to find "{column}" in table "{table}".', array('{column}' => $name, '{table}' => $table))); |
|
if (isset($row['Create Table'])) { |
|
$sql = $row['Create Table']; |
|
} else { |
|
$row = array_values($row); |
|
$sql = $row[1]; |
|
} |
|
if (preg_match_all('/^\s*`(.*?)`\s+(.*?),?$/m', $sql, $matches)) { |
|
foreach ($matches[1] as $i => $c) { |
|
if ($c === $name) { |
|
return "ALTER TABLE $quotedTable CHANGE " . $this->driver->quoteColumnName($name) |
|
. ' ' . $this->driver->quoteColumnName($newName) . ' ' . $matches[2][$i]; |
|
} |
|
} |
|
} |
|
// try to give back a SQL anyway |
|
return "ALTER TABLE $quotedTable CHANGE " . $this->driver->quoteColumnName($name) . ' ' . $newName; |
|
} |
|
|
|
/** |
|
* Builds a SQL statement for dropping a foreign key constraint. |
|
* @param string $name the name of the foreign key constraint to be dropped. The name will be properly quoted by the method. |
|
* @param string $table the table whose foreign is to be dropped. The name will be properly quoted by the method. |
|
* @return string the SQL statement for dropping a foreign key constraint. |
|
*/ |
|
public function dropForeignKey($name, $table) |
|
{ |
|
return 'ALTER TABLE ' . $this->driver->quoteTableName($table) |
|
. ' DROP FOREIGN KEY ' . $this->driver->quoteColumnName($name); |
|
} |
|
}
|
|
|