diff --git a/framework/yii/db/QueryBuilder.php b/framework/yii/db/QueryBuilder.php
index 7ae5369..3cc7971 100644
--- a/framework/yii/db/QueryBuilder.php
+++ b/framework/yii/db/QueryBuilder.php
@@ -491,6 +491,7 @@ class QueryBuilder extends \yii\base\Object
 	 * physical types):
 	 *
 	 * - `pk`: an auto-incremental primary key type, will be converted into "int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY"
+	 * - `bigpk`: an auto-incremental primary key type, will be converted into "bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY"
 	 * - `string`: string type, will be converted into "varchar(255)"
 	 * - `text`: a long string type, will be converted into "text"
 	 * - `smallint`: a small integer type, will be converted into "smallint(6)"
diff --git a/framework/yii/db/Schema.php b/framework/yii/db/Schema.php
index fad91fa..396e944 100644
--- a/framework/yii/db/Schema.php
+++ b/framework/yii/db/Schema.php
@@ -35,6 +35,7 @@ abstract class Schema extends Object
 	 * The followings are the supported abstract column data types.
 	 */
 	const TYPE_PK = 'pk';
+	const TYPE_BIGPK = 'bigpk';
 	const TYPE_STRING = 'string';
 	const TYPE_TEXT = 'text';
 	const TYPE_SMALLINT = 'smallint';
diff --git a/framework/yii/db/cubrid/QueryBuilder.php b/framework/yii/db/cubrid/QueryBuilder.php
index 935b3d3..4b7ef43 100644
--- a/framework/yii/db/cubrid/QueryBuilder.php
+++ b/framework/yii/db/cubrid/QueryBuilder.php
@@ -22,6 +22,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
 	 */
 	public $typeMap = array(
 		Schema::TYPE_PK => 'int NOT NULL AUTO_INCREMENT PRIMARY KEY',
+		Schema::TYPE_BIGPK => 'bigint NOT NULL AUTO_INCREMENT PRIMARY KEY',
 		Schema::TYPE_STRING => 'varchar(255)',
 		Schema::TYPE_TEXT => 'varchar',
 		Schema::TYPE_SMALLINT => 'smallint',
diff --git a/framework/yii/db/mssql/QueryBuilder.php b/framework/yii/db/mssql/QueryBuilder.php
index e7f8f80..aeb5be8 100644
--- a/framework/yii/db/mssql/QueryBuilder.php
+++ b/framework/yii/db/mssql/QueryBuilder.php
@@ -22,6 +22,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
 	 */
 	public $typeMap = array(
 		Schema::TYPE_PK => 'int IDENTITY PRIMARY KEY',
+		Schema::TYPE_BIGPK => 'bigint IDENTITY PRIMARY KEY',
 		Schema::TYPE_STRING => 'varchar(255)',
 		Schema::TYPE_TEXT => 'text',
 		Schema::TYPE_SMALLINT => 'smallint(6)',
diff --git a/framework/yii/db/mysql/QueryBuilder.php b/framework/yii/db/mysql/QueryBuilder.php
index c7a4256..d4f4497 100644
--- a/framework/yii/db/mysql/QueryBuilder.php
+++ b/framework/yii/db/mysql/QueryBuilder.php
@@ -9,6 +9,7 @@ namespace yii\db\mysql;
 
 use yii\db\Exception;
 use yii\base\InvalidParamException;
+use yii\db\sqlite\Schema;
 
 /**
  * QueryBuilder is the query builder for MySQL databases.
@@ -23,6 +24,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
 	 */
 	public $typeMap = array(
 		Schema::TYPE_PK => 'int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY',
+		Schema::TYPE_BIGPK => 'bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY',
 		Schema::TYPE_STRING => 'varchar(255)',
 		Schema::TYPE_TEXT => 'text',
 		Schema::TYPE_SMALLINT => 'smallint(6)',
diff --git a/framework/yii/db/pgsql/QueryBuilder.php b/framework/yii/db/pgsql/QueryBuilder.php
index 22d615e..33c7bf6 100644
--- a/framework/yii/db/pgsql/QueryBuilder.php
+++ b/framework/yii/db/pgsql/QueryBuilder.php
@@ -22,6 +22,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
 	 */
 	public $typeMap = array(
 		Schema::TYPE_PK => 'serial NOT NULL PRIMARY KEY',
+		Schema::TYPE_BIGPK => 'bigserial NOT NULL PRIMARY KEY',
 		Schema::TYPE_STRING => 'varchar(255)',
 		Schema::TYPE_TEXT => 'text',
 		Schema::TYPE_SMALLINT => 'smallint',
diff --git a/framework/yii/db/pgsql/Schema.php b/framework/yii/db/pgsql/Schema.php
index 969b47a..d131342 100644
--- a/framework/yii/db/pgsql/Schema.php
+++ b/framework/yii/db/pgsql/Schema.php
@@ -255,7 +255,7 @@ SELECT
              information_schema._pg_char_max_length(information_schema._pg_truetypid(a, t), information_schema._pg_truetypmod(a, t))
              AS numeric
 	) AS size,
-	a.attnum = any (ct.conkey) as is_pkey			
+	a.attnum = any (ct.conkey) as is_pkey
 FROM
 	pg_class c
 	LEFT JOIN pg_attribute a ON a.attrelid = c.oid
diff --git a/framework/yii/db/sqlite/QueryBuilder.php b/framework/yii/db/sqlite/QueryBuilder.php
index be0275a..4e210f8 100644
--- a/framework/yii/db/sqlite/QueryBuilder.php
+++ b/framework/yii/db/sqlite/QueryBuilder.php
@@ -24,6 +24,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
 	 */
 	public $typeMap = array(
 		Schema::TYPE_PK => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
+		Schema::TYPE_BIGPK => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
 		Schema::TYPE_STRING => 'varchar(255)',
 		Schema::TYPE_TEXT => 'text',
 		Schema::TYPE_SMALLINT => 'smallint',