Merge pull request #185 from sebadob/fix-fk-cascade-user-attr-values

Add an FK constraint for `user_attr_values` and cascade on user deletion

migrations/postgres/14_user_attr_values_fk_fix.sql

@@ -0,0 +1,4 @@
+alter table user_attr_values
+    add constraint user_attr_values_users_id_fk
+        foreign key (user_id) references users
+            on update cascade on delete cascade;

migrations/sqlite/14_user_attr_values_fk_fix.sql

@@ -0,0 +1,22 @@
+create table user_attr_values_dg_tmp
+(
+    user_id varchar not null
+        constraint user_attr_values_users_id_fk
+            references users
+            on update cascade on delete cascade,
+    key     varchar not null
+        references user_attr_config
+            on update cascade on delete cascade,
+    value   blob    not null,
+    constraint user_attr_values_pk
+        primary key (user_id, key)
+);
+
+insert into user_attr_values_dg_tmp(user_id, key, value)
+select user_id, key, value
+from user_attr_values;
+
+drop table user_attr_values;
+
+alter table user_attr_values_dg_tmp
+    rename to user_attr_values;