<extra foo="bar" hello="world" bar="baz" />
</constraint>
<constraint name="emailuniqueindex" type="UNIQUE" fields="email" />
- <constraint name="" type="FOREIGN KEY" fields="another_id"
+ <constraint name="Basic" type="FOREIGN KEY" fields="another_id"
reference_table="Another" options="" deferrable="1" match_type=""
expression="" on_update="" on_delete="">
</constraint>