sancho-a-b-c tags in db-sync are a series of incremental integration of conway feautures. These tags can follow the
sanchonet https://book.world.dev.cardano.org/environments.html#sanchonet-testnet.
Their enumeration has the following meaning:
a: schema changes
b: compatible with a respinned sanchonet or node
c: minor changes or fixes
It is advised to resync from genesis when using a new version a or b.
Some useful links (adjust the numbers to the correct tag):
- Changelog: https://github.com/input-output-hk/cardano-db-sync/blob/sancho-a-b-c/cardano-db-sync/CHANGELOG.md#13200
- Schema docs https://github.com/input-output-hk/cardano-db-sync/blob/sancho-a-b-c/doc/schema.md
- Postgres migrations https://github.com/input-output-hk/cardano-db-sync/tree/sancho-a-b-c/schema