diff --git a/framework/yii/db/QueryBuilder.php b/framework/yii/db/QueryBuilder.php
index c0b4223..46457c6 100644
--- a/framework/yii/db/QueryBuilder.php
+++ b/framework/yii/db/QueryBuilder.php
@@ -464,6 +464,12 @@ class QueryBuilder extends \yii\base\Object
 	 * the first part will be converted, and the rest of the parts will be appended to the converted result.
 	 * For example, 'string NOT NULL' is converted to 'varchar(255) NOT NULL'.
 	 *
+	 * For some of the abstract types you can also specify a length or precision constraint
+	 * by prepending it in round brackets directly to the type.
+	 * For example `string(32)` will be converted into "varchar(32)" on a MySQL database.
+	 * If the underlying DBMS does not support these kind of constraints for a type it will
+	 * be ignored.
+	 *
 	 * If a type cannot be found in [[typeMap]], it will be returned without any change.
 	 * @param string $type abstract column type
 	 * @return string physical column type.
@@ -472,6 +478,10 @@ class QueryBuilder extends \yii\base\Object
 	{
 		if (isset($this->typeMap[$type])) {
 			return $this->typeMap[$type];
+		} elseif ((preg_match('/^(\w+)\((.+?)\)(.*)$/', $type, $matches))) {
+			if (isset($this->typeMap[$matches[1]])) {
+				return preg_replace('/\(.+\)/', '(' . $matches[2] . ')', $this->typeMap[$matches[1]]) . $matches[3];
+			}
 		} elseif (preg_match('/^(\w+)\s+/', $type, $matches)) {
 			if (isset($this->typeMap[$matches[1]])) {
 				return preg_replace('/^\w+/', $this->typeMap[$matches[1]], $type);
diff --git a/framework/yii/db/mssql/QueryBuilder.php b/framework/yii/db/mssql/QueryBuilder.php
index 45a7507..e7f8f80 100644
--- a/framework/yii/db/mssql/QueryBuilder.php
+++ b/framework/yii/db/mssql/QueryBuilder.php
@@ -28,7 +28,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
 		Schema::TYPE_INTEGER => 'int(11)',
 		Schema::TYPE_BIGINT => 'bigint(20)',
 		Schema::TYPE_FLOAT => 'float',
-		Schema::TYPE_DECIMAL => 'decimal',
+		Schema::TYPE_DECIMAL => 'decimal(10,0)',
 		Schema::TYPE_DATETIME => 'datetime',
 		Schema::TYPE_TIMESTAMP => 'timestamp',
 		Schema::TYPE_TIME => 'time',
diff --git a/framework/yii/db/mysql/QueryBuilder.php b/framework/yii/db/mysql/QueryBuilder.php
index 70c6d64..4b35e24 100644
--- a/framework/yii/db/mysql/QueryBuilder.php
+++ b/framework/yii/db/mysql/QueryBuilder.php
@@ -29,7 +29,7 @@ class QueryBuilder extends \yii\db\QueryBuilder
 		Schema::TYPE_INTEGER => 'int(11)',
 		Schema::TYPE_BIGINT => 'bigint(20)',
 		Schema::TYPE_FLOAT => 'float',
-		Schema::TYPE_DECIMAL => 'decimal',
+		Schema::TYPE_DECIMAL => 'decimal(10,0)',
 		Schema::TYPE_DATETIME => 'datetime',
 		Schema::TYPE_TIMESTAMP => 'timestamp',
 		Schema::TYPE_TIME => 'time',
diff --git a/framework/yii/db/sqlite/QueryBuilder.php b/framework/yii/db/sqlite/QueryBuilder.php
index 72d48f4..52c101b 100644
--- a/framework/yii/db/sqlite/QueryBuilder.php
+++ b/framework/yii/db/sqlite/QueryBuilder.php
@@ -30,13 +30,13 @@ class QueryBuilder extends \yii\db\QueryBuilder
 		Schema::TYPE_INTEGER => 'integer',
 		Schema::TYPE_BIGINT => 'bigint',
 		Schema::TYPE_FLOAT => 'float',
-		Schema::TYPE_DECIMAL => 'decimal',
+		Schema::TYPE_DECIMAL => 'decimal(10,0)',
 		Schema::TYPE_DATETIME => 'datetime',
 		Schema::TYPE_TIMESTAMP => 'timestamp',
 		Schema::TYPE_TIME => 'time',
 		Schema::TYPE_DATE => 'date',
 		Schema::TYPE_BINARY => 'blob',
-		Schema::TYPE_BOOLEAN => 'tinyint(1)',
+		Schema::TYPE_BOOLEAN => 'boolean',
 		Schema::TYPE_MONEY => 'decimal(19,4)',
 	);
 
diff --git a/tests/unit/framework/db/QueryBuilderTest.php b/tests/unit/framework/db/QueryBuilderTest.php
new file mode 100644
index 0000000..7dc4731
--- /dev/null
+++ b/tests/unit/framework/db/QueryBuilderTest.php
@@ -0,0 +1,109 @@
+<?php
+
+namespace yiiunit\framework\db;
+
+use yii\db\QueryBuilder;
+use yii\db\Schema;
+use yii\db\mysql\QueryBuilder as MysqlQueryBuilder;
+use yii\db\sqlite\QueryBuilder as SqliteQueryBuilder;
+use yii\db\mssql\QueryBuilder as MssqlQueryBuilder;
+
+class QueryBuilderTest extends DatabaseTestCase
+{
+	/**
+	 * @throws \Exception
+	 * @return QueryBuilder
+	 */
+	protected function getQueryBuilder()
+	{
+		switch($this->driverName)
+		{
+			case 'mysql':
+				return new MysqlQueryBuilder($this->getConnection());
+			case 'sqlite':
+				return new SqliteQueryBuilder($this->getConnection());
+			case 'mssql':
+				return new MssqlQueryBuilder($this->getConnection());
+		}
+		throw new \Exception('Test is not implemented for ' . $this->driverName);
+	}
+
+	/**
+	 * this is not used as a dataprovider for testGetColumnType to speed up the test
+	 * when used as dataprovider every single line will cause a reconnect with the database which is not needed here
+	 */
+	public function columnTypes()
+	{
+		return array(
+			array(Schema::TYPE_PK, 'int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY'),
+			array(Schema::TYPE_PK . '(8)', 'int(8) NOT NULL AUTO_INCREMENT PRIMARY KEY'),
+			array(Schema::TYPE_PK . ' CHECK (value > 5)', 'int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY CHECK (value > 5)'),
+			array(Schema::TYPE_PK . '(8) CHECK (value > 5)', 'int(8) NOT NULL AUTO_INCREMENT PRIMARY KEY CHECK (value > 5)'),
+			array(Schema::TYPE_STRING, 'varchar(255)'),
+			array(Schema::TYPE_STRING . '(32)', 'varchar(32)'),
+			array(Schema::TYPE_STRING . ' CHECK (value LIKE "test%")', 'varchar(255) CHECK (value LIKE "test%")'),
+			array(Schema::TYPE_STRING . '(32) CHECK (value LIKE "test%")', 'varchar(32) CHECK (value LIKE "test%")'),
+			array(Schema::TYPE_STRING . ' NOT NULL', 'varchar(255) NOT NULL'),
+			array(Schema::TYPE_TEXT, 'text'),
+			array(Schema::TYPE_TEXT . '(255)', 'text'),
+			array(Schema::TYPE_TEXT . ' CHECK (value LIKE "test%")', 'text CHECK (value LIKE "test%")'),
+			array(Schema::TYPE_TEXT . '(255) CHECK (value LIKE "test%")', 'text CHECK (value LIKE "test%")'),
+			array(Schema::TYPE_TEXT . ' NOT NULL', 'text NOT NULL'),
+			array(Schema::TYPE_TEXT . '(255) NOT NULL', 'text NOT NULL'),
+			array(Schema::TYPE_SMALLINT, 'smallint(6)'),
+			array(Schema::TYPE_SMALLINT . '(8)', 'smallint(8)'),
+			array(Schema::TYPE_INTEGER, 'int(11)'),
+			array(Schema::TYPE_INTEGER . '(8)', 'int(8)'),
+			array(Schema::TYPE_INTEGER . ' CHECK (value > 5)', 'int(11) CHECK (value > 5)'),
+			array(Schema::TYPE_INTEGER . '(8) CHECK (value > 5)', 'int(8) CHECK (value > 5)'),
+			array(Schema::TYPE_INTEGER . ' NOT NULL', 'int(11) NOT NULL'),
+			array(Schema::TYPE_BIGINT, 'bigint(20)'),
+			array(Schema::TYPE_BIGINT . '(8)', 'bigint(8)'),
+			array(Schema::TYPE_BIGINT . ' CHECK (value > 5)', 'bigint(20) CHECK (value > 5)'),
+			array(Schema::TYPE_BIGINT . '(8) CHECK (value > 5)', 'bigint(8) CHECK (value > 5)'),
+			array(Schema::TYPE_BIGINT . ' NOT NULL', 'bigint(20) NOT NULL'),
+			array(Schema::TYPE_FLOAT, 'float'),
+			array(Schema::TYPE_FLOAT . '(16,5)', 'float'),
+			array(Schema::TYPE_FLOAT . ' CHECK (value > 5.6)', 'float CHECK (value > 5.6)'),
+			array(Schema::TYPE_FLOAT . '(16,5) CHECK (value > 5.6)', 'float CHECK (value > 5.6)'),
+			array(Schema::TYPE_FLOAT . ' NOT NULL', 'float NOT NULL'),
+			array(Schema::TYPE_DECIMAL, 'decimal(10,0)'),
+			array(Schema::TYPE_DECIMAL . '(12,4)', 'decimal(12,4)'),
+			array(Schema::TYPE_DECIMAL . ' CHECK (value > 5.6)', 'decimal(10,0) CHECK (value > 5.6)'),
+			array(Schema::TYPE_DECIMAL . '(12,4) CHECK (value > 5.6)', 'decimal(12,4) CHECK (value > 5.6)'),
+			array(Schema::TYPE_DECIMAL . ' NOT NULL', 'decimal(10,0) NOT NULL'),
+			array(Schema::TYPE_DATETIME, 'datetime'),
+			array(Schema::TYPE_DATETIME . " CHECK(value BETWEEN '2011-01-01' AND '2013-01-01')", "datetime CHECK(value BETWEEN '2011-01-01' AND '2013-01-01')"),
+			array(Schema::TYPE_DATETIME . ' NOT NULL', 'datetime NOT NULL'),
+			array(Schema::TYPE_TIMESTAMP, 'timestamp'),
+			array(Schema::TYPE_TIMESTAMP . " CHECK(value BETWEEN '2011-01-01' AND '2013-01-01')", "timestamp CHECK(value BETWEEN '2011-01-01' AND '2013-01-01')"),
+			array(Schema::TYPE_TIMESTAMP . ' NOT NULL', 'timestamp NOT NULL'),
+			array(Schema::TYPE_TIME, 'time'),
+			array(Schema::TYPE_TIME . " CHECK(value BETWEEN '12:00:00' AND '13:01:01')", "time CHECK(value BETWEEN '12:00:00' AND '13:01:01')"),
+			array(Schema::TYPE_TIME . ' NOT NULL', 'time NOT NULL'),
+			array(Schema::TYPE_DATE, 'date'),
+			array(Schema::TYPE_DATE . " CHECK(value BETWEEN '2011-01-01' AND '2013-01-01')", "date CHECK(value BETWEEN '2011-01-01' AND '2013-01-01')"),
+			array(Schema::TYPE_DATE . ' NOT NULL', 'date NOT NULL'),
+			array(Schema::TYPE_BINARY, 'blob'),
+			array(Schema::TYPE_BOOLEAN, 'tinyint(1)'),
+			array(Schema::TYPE_BOOLEAN . ' NOT NULL DEFAULT 1', 'tinyint(1) NOT NULL DEFAULT 1'),
+			array(Schema::TYPE_MONEY, 'decimal(19,4)'),
+			array(Schema::TYPE_MONEY . '(16,2)', 'decimal(16,2)'),
+			array(Schema::TYPE_MONEY . ' CHECK (value > 0.0)', 'decimal(19,4) CHECK (value > 0.0)'),
+			array(Schema::TYPE_MONEY . '(16,2) CHECK (value > 0.0)', 'decimal(16,2) CHECK (value > 0.0)'),
+			array(Schema::TYPE_MONEY . ' NOT NULL', 'decimal(19,4) NOT NULL'),
+		);
+	}
+
+	/**
+	 *
+	 */
+	public function testGetColumnType()
+	{
+		$qb = $this->getQueryBuilder();
+		foreach($this->columnTypes() as $item) {
+			list ($column, $expected) = $item;
+			$this->assertEquals($expected, $qb->getColumnType($column));
+		}
+	}
+}
diff --git a/tests/unit/framework/db/sqlite/SqliteQueryBuilderTest.php b/tests/unit/framework/db/sqlite/SqliteQueryBuilderTest.php
new file mode 100644
index 0000000..c36628f
--- /dev/null
+++ b/tests/unit/framework/db/sqlite/SqliteQueryBuilderTest.php
@@ -0,0 +1,74 @@
+<?php
+
+namespace yiiunit\framework\db\sqlite;
+
+use yii\db\sqlite\Schema;
+use yiiunit\framework\db\QueryBuilderTest;
+
+class SqliteQueryBuilderTest extends QueryBuilderTest
+{
+	public $driverName = 'sqlite';
+
+	public function columnTypes()
+	{
+		return array(
+			array(Schema::TYPE_PK, 'integer PRIMARY KEY AUTOINCREMENT NOT NULL'),
+			array(Schema::TYPE_PK . '(8)', 'integer PRIMARY KEY AUTOINCREMENT NOT NULL'),
+			array(Schema::TYPE_PK . ' CHECK (value > 5)', 'integer PRIMARY KEY AUTOINCREMENT NOT NULL CHECK (value > 5)'),
+			array(Schema::TYPE_PK . '(8) CHECK (value > 5)', 'integer PRIMARY KEY AUTOINCREMENT NOT NULL CHECK (value > 5)'),
+			array(Schema::TYPE_STRING, 'varchar(255)'),
+			array(Schema::TYPE_STRING . '(32)', 'varchar(32)'),
+			array(Schema::TYPE_STRING . ' CHECK (value LIKE "test%")', 'varchar(255) CHECK (value LIKE "test%")'),
+			array(Schema::TYPE_STRING . '(32) CHECK (value LIKE "test%")', 'varchar(32) CHECK (value LIKE "test%")'),
+			array(Schema::TYPE_STRING . ' NOT NULL', 'varchar(255) NOT NULL'),
+			array(Schema::TYPE_TEXT, 'text'),
+			array(Schema::TYPE_TEXT . '(255)', 'text'),
+			array(Schema::TYPE_TEXT . ' CHECK (value LIKE "test%")', 'text CHECK (value LIKE "test%")'),
+			array(Schema::TYPE_TEXT . '(255) CHECK (value LIKE "test%")', 'text CHECK (value LIKE "test%")'),
+			array(Schema::TYPE_TEXT . ' NOT NULL', 'text NOT NULL'),
+			array(Schema::TYPE_TEXT . '(255) NOT NULL', 'text NOT NULL'),
+			array(Schema::TYPE_SMALLINT, 'smallint'),
+			array(Schema::TYPE_SMALLINT . '(8)', 'smallint'),
+			array(Schema::TYPE_INTEGER, 'integer'),
+			array(Schema::TYPE_INTEGER . '(8)', 'integer'),
+			array(Schema::TYPE_INTEGER . ' CHECK (value > 5)', 'integer CHECK (value > 5)'),
+			array(Schema::TYPE_INTEGER . '(8) CHECK (value > 5)', 'integer CHECK (value > 5)'),
+			array(Schema::TYPE_INTEGER . ' NOT NULL', 'integer NOT NULL'),
+			array(Schema::TYPE_BIGINT, 'bigint'),
+			array(Schema::TYPE_BIGINT . '(8)', 'bigint'),
+			array(Schema::TYPE_BIGINT . ' CHECK (value > 5)', 'bigint CHECK (value > 5)'),
+			array(Schema::TYPE_BIGINT . '(8) CHECK (value > 5)', 'bigint CHECK (value > 5)'),
+			array(Schema::TYPE_BIGINT . ' NOT NULL', 'bigint NOT NULL'),
+			array(Schema::TYPE_FLOAT, 'float'),
+			array(Schema::TYPE_FLOAT . '(16,5)', 'float'),
+			array(Schema::TYPE_FLOAT . ' CHECK (value > 5.6)', 'float CHECK (value > 5.6)'),
+			array(Schema::TYPE_FLOAT . '(16,5) CHECK (value > 5.6)', 'float CHECK (value > 5.6)'),
+			array(Schema::TYPE_FLOAT . ' NOT NULL', 'float NOT NULL'),
+			array(Schema::TYPE_DECIMAL, 'decimal(10,0)'),
+			array(Schema::TYPE_DECIMAL . '(12,4)', 'decimal(12,4)'),
+			array(Schema::TYPE_DECIMAL . ' CHECK (value > 5.6)', 'decimal(10,0) CHECK (value > 5.6)'),
+			array(Schema::TYPE_DECIMAL . '(12,4) CHECK (value > 5.6)', 'decimal(12,4) CHECK (value > 5.6)'),
+			array(Schema::TYPE_DECIMAL . ' NOT NULL', 'decimal(10,0) NOT NULL'),
+			array(Schema::TYPE_DATETIME, 'datetime'),
+			array(Schema::TYPE_DATETIME . " CHECK(value BETWEEN '2011-01-01' AND '2013-01-01')", "datetime CHECK(value BETWEEN '2011-01-01' AND '2013-01-01')"),
+			array(Schema::TYPE_DATETIME . ' NOT NULL', 'datetime NOT NULL'),
+			array(Schema::TYPE_TIMESTAMP, 'timestamp'),
+			array(Schema::TYPE_TIMESTAMP . " CHECK(value BETWEEN '2011-01-01' AND '2013-01-01')", "timestamp CHECK(value BETWEEN '2011-01-01' AND '2013-01-01')"),
+			array(Schema::TYPE_TIMESTAMP . ' NOT NULL', 'timestamp NOT NULL'),
+			array(Schema::TYPE_TIME, 'time'),
+			array(Schema::TYPE_TIME . " CHECK(value BETWEEN '12:00:00' AND '13:01:01')", "time CHECK(value BETWEEN '12:00:00' AND '13:01:01')"),
+			array(Schema::TYPE_TIME . ' NOT NULL', 'time NOT NULL'),
+			array(Schema::TYPE_DATE, 'date'),
+			array(Schema::TYPE_DATE . " CHECK(value BETWEEN '2011-01-01' AND '2013-01-01')", "date CHECK(value BETWEEN '2011-01-01' AND '2013-01-01')"),
+			array(Schema::TYPE_DATE . ' NOT NULL', 'date NOT NULL'),
+			array(Schema::TYPE_BINARY, 'blob'),
+			array(Schema::TYPE_BOOLEAN, 'boolean'),
+			array(Schema::TYPE_BOOLEAN . ' NOT NULL DEFAULT 1', 'boolean NOT NULL DEFAULT 1'),
+			array(Schema::TYPE_MONEY, 'decimal(19,4)'),
+			array(Schema::TYPE_MONEY . '(16,2)', 'decimal(16,2)'),
+			array(Schema::TYPE_MONEY . ' CHECK (value > 0.0)', 'decimal(19,4) CHECK (value > 0.0)'),
+			array(Schema::TYPE_MONEY . '(16,2) CHECK (value > 0.0)', 'decimal(16,2) CHECK (value > 0.0)'),
+			array(Schema::TYPE_MONEY . ' NOT NULL', 'decimal(19,4) NOT NULL'),
+		);
+	}
+}
\ No newline at end of file