Using the execute method The alternative method is to skip using text() and pass a raw SQL string to the .execute() method. For example, here we’ll use .execute() to view the new records we inserted above: with engine.connect() as con: rs = con.execute('SELECT * FROM book') ...
db= create_engine("sqlite:///:memory:", echo=True)#创建表db.execute("""create table users( userid char(10), username char(50) )""")#插入记录resultProxy = db.execute("""insert into users (userid,username) values('user1','tony')""") resultProxy.rowcount#return rows affected by a...
operate(), reverse_operate(), adapt(), as_generic(), bind_expression(), bind_processor(), coerce_compared_value(), column_expression(), comparator_factory, compare_values(), compile(), dialect_impl(), evaluates_none(), get_dbapi_type(), hashable, literal_processor(), python_type, rend...
retry_interval): def _run_with_retries(fn, context, cursor_obj, statement, *arg, **kw): for retry in range(num_retries + 1): try: fn(cursor_obj, statement, context=context, *arg) except engine.dialect.dbapi.Error as raw_dbapi_err: connection = context.root_connection if engine.dia...
method exec_driver_sql(statement: str, parameters: _DBAPIAnyExecuteParams | None = None, execution_options: CoreExecuteOptionsParameter | None = None) → CursorResult[Any] 直接在 DBAPI 游标上执行字符串 SQL 语句,无需任何 SQL 编译步骤。 这可以用于直接将任何字符串传递给正在使用的 DBAPI 的cursor...
该功能通常在使用 Insert.returning() 方法的 Insert 结构与 executemany 执行配合使用时发生,即当将字典列表传递给 Connection.execute() 或Session.execute() 方法的 Connection.execute.parameters 参数时(以及 asyncio 和 Session.scalars() 等简写方法下的等效方法)。在使用诸如 Session.add() 和Session.add_all(...
parameters, context, executemany): conn.info.setdefault('query_start_time', []).append(time.time()) logger.debug("Start Query: %s", statement) @event.listens_for(Engine, "after_cursor_execute") def after_cursor_execute(conn, cursor, statement, ...
class DefaultDialect(interfaces.Dialect): def do_execute(self, cursor, statement, parameters, context=None): cursor.execute(statement, parameters) DefaultDialect.execution_ctx_cls = DefaultExecutionContext 可以看到执行语句就是使用cursor对象,和前面直接操作sqlite一致。每条sql执行的上下文context是下面方式构建...
SqlAlchemy的sql expression和raw sql的比较: 1. sql expression 写法是纯python代码, 阅读性更好, 尤其是在使用insert()方法时, 字段名和取值成对出现. 2. raw sql 比 sql expression 更灵活, 如果SQL/DDL很复杂, raw sql就更有优势了. === sqlalchemy 超简单教程 === http://solov...
parameters, context, executemany): conn.info.setdefault('query_start_time', []).append(time.time()) logger.debug("Start Query: %s", statement) @event.listens_for(Engine, "after_cursor_execute") def after_cursor_execute(conn, cursor, statement, ...