Fix type errors in SqlServerSchema.
Fix type errors in SqlServerSchema.

dakota/cakephp,cakephp/cakephp,CakeDC/cakephp,CakeDC/cakephp,ADmad/cakephp,ndm2/cakephp,dakota/cakephp,CakeDC/cakephp,ADmad/cakephp,CakeDC/cakephp,cakephp/cakephp,ADmad/cakephp,ndm2/cakephp,dakota/cakephp,ndm2/cakephp,cakephp/cakephp,dakota/cakephp,ADmad/cakephp,cakephp/cakephp,ndm2/cakephp