in a database table. Constructor takes name, type and other parameters such as primary_key, autoincrement and other constraints. SQLAlchemy matches Python data to the best possible generic column data

TABLE user ( id INTEGER PRIMARY KEY AUTOINCREMENT, username TEXT UNIQUE NOT NULL, password TEXT NOT NULL ); CREATE TABLE post ( id INTEGER PRIMARY KEY AUTOINCREMENT, author_id INTEGER NOT NULL, created

TABLE user ( id INTEGER PRIMARY KEY AUTOINCREMENT, username TEXT UNIQUE NOT NULL, password TEXT NOT NULL ); CREATE TABLE post ( id INTEGER PRIMARY KEY AUTOINCREMENT, author_id INTEGER NOT NULL, created

语句是为你所用的数据库定制的，所以那些和数据库有关的字段类型，比如 auto_increment（MySQL）、serial（PostgreSQL）和 integer primary key autoincrement（SQLite），都会为你自动处理的。那些和引号相关的事情 - 例如，是使用 单引号还是双引号 - 也一样会被自动处理。 sqlmigrate 命令并没有真正在你的数据库中的执行迁移 -

'celery_taskmeta' __table_args__ = {'sqlite_autoincrement': True} id = sa.Column(sa.Integer, sa.Sequence('task_id_sequence'), primary_key=True, autoincrement=True) task_id = sa.Column(sa.String(155) """For the extend result.""" __tablename__ = 'celery_taskmeta' __table_args__ = {'sqlite_autoincrement': True, 'extend_existing': True} name = sa.Column(sa.String(155), nullable=True) args 'celery_tasksetmeta' __table_args__ = {'sqlite_autoincrement': True} id = sa.Column(sa.Integer, sa.Sequence('taskset_id_sequence'), autoincrement=True, primary_key=True) taskset_id =

'celery_taskmeta' __table_args__ = {'sqlite_autoincrement': True} id = sa.Column(sa.Integer, sa.Sequence('task_id_sequence'), primary_key=True, autoincrement=True) task_id = sa.Column(sa.String(155) """For the extend result.""" __tablename__ = 'celery_taskmeta' __table_args__ = {'sqlite_autoincrement': True, 'extend_existing': True} name = sa.Column(sa.String(155), nullable=True) args 'celery_tasksetmeta' __table_args__ = {'sqlite_autoincrement': True} id = sa.Column(sa.Integer, sa.Sequence('taskset_id_sequence'), autoincrement=True, primary_key=True) taskset_id =

'celery_taskmeta' __table_args__ = {'sqlite_autoincrement': True} id = sa.Column(sa.Integer, sa.Sequence('task_id_sequence'), primary_key=True, autoincrement=True) task_id = sa.Column(sa.String(155) """For the extend result.""" __tablename__ = 'celery_taskmeta' __table_args__ = {'sqlite_autoincrement': True, 'extend_existing': True} name = sa.Column(sa.String(155), nullable=True) args 'celery_tasksetmeta' __table_args__ = {'sqlite_autoincrement': True} id = sa.Column(sa.Integer, sa.Sequence('taskset_id_sequence'), autoincrement=True, primary_key=True) taskset_id =

'celery_taskmeta' __table_args__ = {'sqlite_autoincrement': True} id = sa.Column(sa.Integer, sa.Sequence('task_id_sequence'), primary_key=True, autoincrement=True) task_id = sa.Column(sa.String(155) """For the extend result.""" __tablename__ = 'celery_taskmeta' __table_args__ = {'sqlite_autoincrement': True, 'extend_existing': True} name = sa.Column(sa.String(155), nullable=True) args 'celery_tasksetmeta' __table_args__ = {'sqlite_autoincrement': True} id = sa.Column(sa.Integer, sa.Sequence('taskset_id_sequence'), autoincrement=True, primary_key=True) taskset_id =

There is a small performance cost for this feature. For more information, see the SQLite docs on autoincrement [https://sqlite.org/autoinc.html]. class JSONField Field class suitable for storing JSON data

There is a small performance cost for this feature. For more information, see the SQLite docs on autoincrement [https://sqlite.org/autoinc.html]. class JSONField Field class suitable for storing JSON data