Under the hood of SQLAlchemy, PickleType is just LargeBlob, which under MySQL is mapped to BLOB. BLOB (in MYSQL) has a max size of 64kiB, rather than MEDIUM_BLOB or LONG_BLOB, which store larger amounts. In other words, it works, just not for very long.
Under the hood of SQLAlchemy, PickleType is just LargeBlob, which under MySQL is mapped to BLOB. BLOB (in MYSQL) has a max size of 64kiB, rather than MEDIUM_BLOB or LONG_BLOB, which store larger amounts. In other words, it works, just not for very long.