安裝magento遇到mysql的問題

Error in file: "D:\phpproject\workspaces\magento\app\code\core\Mage\Core\sql\core_setup\mysql4-install-0.8.0.php" - SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 767 bytes
Trace:
#0 D:\phpproject\workspaces\magento\app\code\core\Mage\Core\Model\Resource\Setup.php(390): Mage::exception('Mage_Core', 'Error in file: ...')
#1 D:\phpproject\workspaces\magento\app\code\core\Mage\Core\Model\Resource\Setup.php(276): Mage_Core_Model_Resource_Setup->_modifyResourceDb('install', '', '0.8.26')
#2 D:\phpproject\workspaces\magento\app\code\core\Mage\Core\Model\Resource\Setup.php(240): Mage_Core_Model_Resource_Setup->_installResourceDb('0.8.26')
#3 D:\phpproject\workspaces\magento\app\code\core\Mage\Core\Model\Resource\Setup.php(161): Mage_Core_Model_Resource_Setup->applyUpdates()
#4 D:\phpproject\workspaces\magento\app\code\core\Mage\Core\Model\App.php(363): Mage_Core_Model_Resource_Setup::applyAllUpdates()
#5 D:\phpproject\workspaces\magento\app\code\core\Mage\Core\Model\App.php(295): Mage_Core_Model_App->_initModules()
#6 D:\phpproject\workspaces\magento\app\Mage.php(596): Mage_Core_Model_App->run(Array)
#7 D:\phpproject\workspaces\magento\index.php(80): Mage::run('', 'store')
#8 {main}