sqlalchemy.exc.InternalError: (pymysql.err.InternalError) (1091, "Can't DROP 'users_ibfk_1'; check that column/key exists") [SQL: ALTER TABLE users DROP FOREIGN KEY users_ibfk_1]

【sqlalchemy.exc.InternalError: (pymysql.err.InternalError) (1091, "Can't DROP 'users_ibfk_1'; check that column/key exists") [SQL: ALTER TABLE users DROP FOREIGN KEY users_ibfk_1]】的更多相关文章

sqlalchemy.exc.InternalError: (pymysql.err.InternalError) (1091, "Can't DROP 'users_ibfk_1'; check that column/key exists") [SQL: ALTER TABLE users DROP FOREIGN KEY users_ibfk_1]

flask 迁移数据库报错报错: sqlalchemy.exc.InternalError: (pymysql.err.InternalError) (1091, "Can't DROP 'users_ibfk_1'; check that column/key exists")[SQL: ALTER TABLE users DROP FOREIGN KEY users_ibfk_1] 解决办法: 将每个数据库表类型InnoDB转为 MyISAM 如果报错ERROR 1217 (23…

sqlalchemy.exc.InternalError: (pymysql.err.InternalError) (1366, "Incorrect string value: '\\xE6\\xB1\\x89\\xE8\\xAF\\xAD...' for column 'className' at row 1") [SQL: INSERT INTO classmessage (`classId

sqlalchemy.exc.InternalError: (pymysql.err.InternalError) (1366, "Incorrect string value: '\\xE6\\xB1\\x89\\xE8\\xAF\\xAD...' for column 'className' at row 1")[SQL: INSERT INTO classmessage (`classId`, `className`, xq, `useOrNot`, `increaseTime`…

sqlalchemy.exc.ProgrammingError: (pymysql.err.ProgrammingError)

在我学习flask建立网站时间碰到了一个棘手的问题,就是在我进行操作日志的更新时间,发现表格建立有点错误,导致表缺失,从而报了下面的错误 sqlalchemy.exc.ProgrammingError: (pymysql.err.ProgrammingError) (1146, "Table 'movie.oplog' doesn't exist") [SQL: 'SELECT oplog.id AS oplog_id, oplog.admin_id AS oplog_admin_id…

[bug] sqlalchemy.exc.InternalError: (pymysql.err.InternalError) (1054, "Unknown column 'recevie_name' in 'field list'")

Python Flask 开发购物网站,提交订单时报错根据提示,检查代码,发现是字段名拼写错误导致,数据库对应的字段是receive_name,误写成了recevie_name 另外要注意,灰色字和html文件中获取的字段名也要对应一致,否则会报其他错误…

InternalError: (pymysql.err.InternalError) (1205, u'Lock wait timeout exceeded; try restarting transaction')

在mysql innodb中使用事务,如果插入或者更新出错,一定要主动显式地执行rollback,否则可能产生不必要的锁而锁住其他的操作我们在使用数据库的时候,可以使用contextlib,这样异常的时候自动回滚,而且最后都会执行关闭操作 from contextlib import contextmanager engine = create_engine(EREBUS_DB_CONNECT_STRING, echo=True, pool_size=150, max_overflow=50,…

OpenStack安装keyston 错误BError: (pymysql.err.InternalError) (1071, u‘Specified key was too long; max key length is 767 bytes‘) [SQL: u‘\nCREATE TABLE migrate_ver

折腾了两天的错误,BError: (pymysql.err.InternalError) (1071, u‘Specified key was too long; max key length is 767 bytes‘) [SQL: u‘\nCREATE TABLE migrate_ver 2018-01-02 10:32:40.924 76081 ERROR oslo_db.sqlalchemy.exc_filters [-] DBAPIError exception wrapped fro…

pymysql.err.InternalError: (1205, 'Lock wait timeout exceeded; try restarting transaction')错误处理

问题描述: 在使用pymysql库时,利用游标执行插入操作,产生错误,会出现pymysql.err.InternalError: (1205, 'Lock wait timeout exceeded; try restarting transaction')的错误,此时产生了不必要的锁而锁住其他的操作. 插入操作产生错误的原因有很多,我这里是因为主键有相同的值,其他的增删改可能也会因为错误产生死锁. 解决办法: 我们可以用 try 来捕获异常,进行错误回滚,防止锁住其他操作,也可以产生错误时跳过…