yiiapi/framework/db/schema/sqlite/CSqliteSchema.php

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<?php
/**
 * CSqliteSchema class file.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @link http://www.yiiframework.com/
 * @copyright 2008-2013 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

/**
 * CSqliteSchema is the class for retrieving metadata information from a SQLite (2/3) database.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @package system.db.schema.sqlite
 * @since 1.0
 */
class CSqliteSchema extends CDbSchema
{
	/**
	 * @var array the abstract column types mapped to physical column types.
	 * @since 1.1.6
	 */
	public $columnTypes=array(
		'pk' => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
		'bigpk' => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
		'string' => 'varchar(255)',
		'text' => 'text',
		'integer' => 'integer',
		'bigint' => 'integer',
		'float' => 'float',
		'decimal' => 'decimal',
		'datetime' => 'datetime',
		'timestamp' => 'timestamp',
		'time' => 'time',
		'date' => 'date',
		'binary' => 'blob',
		'boolean' => 'tinyint(1)',
		'money' => 'decimal(19,4)',
	);

	/**
	 * Resets the sequence value of a table's primary key.
	 * The sequence will be reset such that the primary key of the next new row inserted
	 * will have the specified value or max value of a primary key plus one (i.e. sequence trimming).
	 * @param CDbTableSchema $table the table schema whose primary key sequence will be reset
	 * @param integer|null $value the value for the primary key of the next new row inserted.
	 * If this is not set, the next new row's primary key will have the max value of a primary
	 * key plus one (i.e. sequence trimming).
	 * @since 1.1
	 */
	public function resetSequence($table,$value=null)
	{
		if($table->sequenceName===null)
			return;
		if($value!==null)
			$value=(int)($value)-1;
		else
			$value=(int)$this->getDbConnection()
				->createCommand("SELECT MAX(`{$table->primaryKey}`) FROM {$table->rawName}")