X_MIGRATION_CONCURRENT_PARTITIONED

a concurrent index build names a partitioned table

Postgres builds no index concurrently on a partitioned parent (SQLSTATE 0A000); a migration ran create index concurrently on one

CREATE INDEX CONCURRENTLY <index>_<partition> ON <partition> (<columns>); per partition, then CREATE INDEX <index> ON ONLY <parent> (<columns>);, then per partition ALTER INDEX <index> ATTACH PARTITION <index>_<partition>; — in a -- transaction: false migration (Partitioned tables)