diff --git a/src/Model/Column.php b/src/Model/Column.php
index 62fb987..afbbdef 100644
--- a/src/Model/Column.php
+++ b/src/Model/Column.php
@@ -64,6 +64,11 @@ class Column
      */
     private $primaryKey;
 
+    /**
+     * @var int
+     */
+    private $primaryKeyLength;
+
     /**
      * @var string
      */
@@ -286,6 +291,22 @@ public function setPrimaryKey($primaryKey)
         $this->primaryKey = $primaryKey;
     }
 
+    /**
+     * @return int
+     */
+    public function getPrimaryKeyLength()
+    {
+        return $this->primaryKeyLength;
+    }
+
+    /**
+     * @param int $primaryKeyLength
+     */
+    public function setPrimaryKeyLength($primaryKeyLength)
+    {
+        $this->primaryKeyLength = $primaryKeyLength;
+    }
+
     /**
      * @return string
      */
diff --git a/src/Model/Table.php b/src/Model/Table.php
index 28dcd4d..67a4597 100644
--- a/src/Model/Table.php
+++ b/src/Model/Table.php
@@ -9,6 +9,11 @@ class Table
      */
     private $name;
 
+    /**
+     * @var bool
+     */
+    private $ifNotExists;
+
     /**
      * @var string
      */
@@ -70,6 +75,22 @@ public function getName()
         return $this->name;
     }
 
+    /**
+     * @return bool
+     */
+    public function isIfNotExists()
+    {
+        return $this->ifNotExists;
+    }
+
+    /**
+     * @param bool $ifNotExists
+     */
+    public function setIfNotExists($ifNotExists)
+    {
+        $this->ifNotExists = $ifNotExists;
+    }
+
     /**
      * @return string
      */
@@ -324,7 +345,13 @@ public function generatePrimaryKeyCreationScript()
 
         $primaryKeys = [];
         foreach ($this->primaryKeys as $primaryKeyColumn) {
-            $primaryKeys[] = sprintf('`%s`', $primaryKeyColumn->getName());
+            if ($primaryKeyColumn->getPrimaryKeyLength()) {
+                $primaryKey = sprintf('`%s`(%s)', $primaryKeyColumn->getName(), $primaryKeyColumn->getPrimaryKeyLength());
+            } else {
+                $primaryKey = sprintf('`%s`', $primaryKeyColumn->getName());
+            }
+            
+            $primaryKeys[] = $primaryKey;
         }
 
         return sprintf('PRIMARY KEY (%s)', implode(',', $primaryKeys));
@@ -369,6 +396,12 @@ public function generateCreationScript($ignoreAutoIncrement = false, $sortKeys =
 
         $tableOptions = [];
 
+        if ($this->ifNotExists) {
+            $ifNotExists = ' IF NOT EXISTS';
+        } else {
+            $ifNotExists = '';
+        }
+
         if ($this->engine) {
             $tableOptions[] = sprintf('ENGINE=%s', $this->engine);
         }
@@ -387,6 +420,6 @@ public function generateCreationScript($ignoreAutoIncrement = false, $sortKeys =
             $implodedTableOptions = ' ' . $implodedTableOptions;
         }
 
-        return trim(sprintf('CREATE TABLE `%s` (%s  %s%s)%s;', $this->name, PHP_EOL, implode(',' . PHP_EOL . '  ', $tableDefinitions), PHP_EOL, $implodedTableOptions));
+        return trim(sprintf('CREATE TABLE%s `%s` (%s  %s%s)%s;', $ifNotExists, $this->name, PHP_EOL, implode(',' . PHP_EOL . '  ', $tableDefinitions), PHP_EOL, $implodedTableOptions));
     }
 }
diff --git a/src/Parser.php b/src/Parser.php
index c19dbf2..310d7f3 100644
--- a/src/Parser.php
+++ b/src/Parser.php
@@ -43,6 +43,7 @@ public function parseTables($sqlScript)
         $tables = [];
         for ($i = 0; $i < count($matches[0]); $i++) {
             $name = $matches['tableName'][$i];
+            $ifNotExists = $matches['ifNotExists'][$i];
             $definition = $matches['tableDefinition'][$i];
             $creationScript = $matches['creationScript'][$i];
             $engine = $matches['engine'][$i];
@@ -53,6 +54,10 @@ public function parseTables($sqlScript)
             $table->setDefinition(trim($definition));
             $table->setCreationScript(trim($creationScript) . ';');
 
+            if ($ifNotExists) {
+                $table->setIfNotExists(true);
+            }
+
             if ($engine) {
                 $table->setEngine($engine);
             }
@@ -171,8 +176,20 @@ public function parsePrimaryKey(Table $table)
         $primaryKeyNames = explode(',', str_replace('`', '', $matches['primaryKey']));
 
         foreach ($primaryKeyNames as $primaryKeyName) {
-            $primaryKeyColumn = $table->getColumnByName(trim($primaryKeyName));
+            if (preg_match('/^(?<columnName>[^\(]+)\((?<keyLength>\d+)\)/', $primaryKeyName, $keyMatches)) {
+                $columnName = $keyMatches['columnName'];
+                $keyLength = $keyMatches['keyLength'];
+            } else {
+                $columnName = $primaryKeyName;
+                $keyLength = null;
+            }
+            $primaryKeyColumn = $table->getColumnByName(trim($columnName));
             $primaryKeyColumn->setPrimaryKey(true);
+
+            if ($keyLength) {
+                $primaryKeyColumn->setPrimaryKeyLength($keyLength);
+            }
+
             $table->addPrimaryKey($primaryKeyColumn);
         }
     }
diff --git a/src/RegExpPattern.php b/src/RegExpPattern.php
index 2d3296d..a07ffc8 100644
--- a/src/RegExpPattern.php
+++ b/src/RegExpPattern.php
@@ -31,7 +31,7 @@ class RegExpPattern
      */
     public static function tables()
     {
-        $pattern = '/(?<creationScript>CREATE\s+TABLE\s+`(?<tableName>\S+)`\s+';
+        $pattern = '/(?<creationScript>CREATE\s+TABLE\s+(?<ifNotExists>IF NOT EXISTS)?\s*`(?<tableName>\S+)`\s+';
         $pattern .= '\((?<tableDefinition>[^;\/]+)\)';
         $pattern .= '(?:\s+ENGINE=(?<engine>[^;\s]+))?\s*';
         $pattern .= '(?:AUTO_INCREMENT=(?<autoIncrement>\d+))?\s*';
@@ -77,7 +77,7 @@ public static function dataType()
      */
     public static function primaryKey()
     {
-        return '/PRIMARY KEY \((?<primaryKey>.+?)\)/';
+        return '/PRIMARY KEY \((?<primaryKey>(?:`[^`]+`\s*(?:\(\d+\))?,?)+)\)/';
     }
 
     /**
diff --git a/tests/ParserTest.php b/tests/ParserTest.php
index 0eafbdb..269b127 100644
--- a/tests/ParserTest.php
+++ b/tests/ParserTest.php
@@ -286,4 +286,20 @@ public function testIsParsingDoubleUnsignedType()
         $this->assertEquals('double unsigned', $database->getTableByName('jos_finder_links')->getColumnByName('list_price')->getColumnType());
         $this->assertEquals('double', $database->getTableByName('jos_finder_links')->getColumnByName('list_price')->getDataType());
     }
+
+    public function testIsParsingPrimaryKeyLength()
+    {
+        $creationScript = $this->getDatabaseFixture('jos_extwebdav_properties.sql');
+
+        $parser = new Parser();
+
+        $database = $parser->parseDatabase($creationScript);
+
+        $this->assertInstanceOf(Database::class, $database);
+        $this->assertCount(1, $database->getTables());
+        $this->assertCount(4, $database->getTableByName('jos_extwebdav_properties')->getColumns());
+        $this->assertCount(3, $database->getTableByName('jos_extwebdav_properties')->getPrimaryKeys());
+
+        $this->assertEquals($creationScript, $database->getTableByName('jos_extwebdav_properties')->generateCreationScript());
+    }
 }
diff --git a/tests/fixtures/jos_extwebdav_properties.sql b/tests/fixtures/jos_extwebdav_properties.sql
new file mode 100644
index 0000000..2144bd8
--- /dev/null
+++ b/tests/fixtures/jos_extwebdav_properties.sql
@@ -0,0 +1,8 @@
+CREATE TABLE IF NOT EXISTS `jos_extwebdav_properties` (
+  `path` varchar(255) NOT NULL DEFAULT '',
+  `name` varchar(120) NOT NULL DEFAULT '',
+  `ns` varchar(120) NOT NULL DEFAULT 'DAV:',
+  `value` text,
+  PRIMARY KEY (`ns`(100),`path`(100),`name`(50)),
+  KEY `path` (`path`)
+) ENGINE=MyISAM DEFAULT CHARSET=utf8;
\ No newline at end of file