| 123456789101112131415161718 | from flask_sqlalchemy import SQLAlchemyfrom sqlalchemy import MetaDataPOSTGRES_INDEXES_NAMING_CONVENTION = {    "ix": "%(column_0_label)s_idx",    "uq": "%(table_name)s_%(column_0_name)s_key",    "ck": "%(table_name)s_%(constraint_name)s_check",    "fk": "%(table_name)s_%(column_0_name)s_fkey",    "pk": "%(table_name)s_pkey",}metadata = MetaData(naming_convention=POSTGRES_INDEXES_NAMING_CONVENTION)db = SQLAlchemy(metadata=metadata)def init_app(app):    db.init_app(app)
 |