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This migrations introduces state handling by creating a dedicated `pgroll` schema (name configurable). We will store migrations there, as well as their state. So we keep some useful information, ie the migration definition (so we don't need it for the `complete` state). Schema includes the proper constraints to guarantee that: * Only a migration is active at a time * Migration history is linear (all migrations have a unique parent, except the first one which is NULL) * We now the current migration at all times Some helper functions are included: * `is_active_migration_period()` will return true if there is an active migration. * `latest_version()` will return the name of the latest version of the schema. |
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analyze.go | ||
complete.go | ||
init.go | ||
rollback.go | ||
root.go | ||
start.go |