Using pandas' to_sql()

Attempting to upload large dataframes can result in the following error:

PendingRollbackError: Can't reconnect until invalid transaction is rolled back. Please rollback() fully before proceeding (Background on this error at: https://sqlalche.me/e/20/8s2b)

This can occur even where max log IO percentage is less than 100%. E.g.:

Setting a chunksize - e.g. chunksize=50000 - can get around this.