Upsert with partial unique index - WHERE clause support?

upsert

UNIQUE (org_id, name) WHERE org_id IS NULL

global? true

ON CONFLICT

ON CONFLICT ("org_id","name") DO UPDATE...

The issue is that for partial indexes, postgresql requires the 

 clause to be included in the 

 specification, like: 

.

I have seen that Ash has an 

 macro but it adds the 

clause on the 

 which is perfectly valid but serves a completely different purpose than the one after 

. It adds a condition for whether the update should actually happen when a conflict is detected.

Does Ash's 

 action support specifying a 

 clause for the