PRUNE_REFERENCED_BLOBS_SQL

PRUNE_REFERENCED_BLOBS_SQL = "\nSELECT DISTINCT v.key AS channel, v.value AS version\nFROM checkpoints c\nCROSS JOIN LATERAL jsonb_each_text(
  c.checkpoint -> 'channel_versions'
) AS v\nWHERE c.thread_id = %s AND c.checkpoint_ns = %s\n"