Add fix for issue #352 of sql server adapter and
https://github.com/composite-primary-keys/composite_primary_keys/issues/224
Merge pull request #354 from jmozmoz/fix_composite_primary_keys

Add fix for issue #352 of sql server adapter and composite-primary-keys/composite_primary_keys#224
Patched version to address issue: https://github.com/composite-primary-keys/composite_primary_keys/issues/224