Hi, If I have a tap used for multiple Shopify stores, and the source store name is included in the streams, what’s the best way to split the state by store name?

Personally I'd use atleast a different schema for each sync, then combine the data together after the data is in the db

Maybe. Something like this seems to do it for now:

state_id_suffix: -$SHOPIFY_STORE

Also, if the number of stores is not too large, you could use an inherited plugin for each separate store.