unique=True 键唯一
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【Python05-BUG】pandas pd.DataFrame.to_sql()引起的sqlalchemy.exc.IntegrityError: (pymysql.err.IntegrityError) (1048, "Column 'data_value' cannot be null") [SQL: 'INSERT INTO....
pymysql.err.IntegrityError: (1062, “Duplicate entry ‘ ‘ for key ‘PRIMARY‘“)
sqlalchemy.exc.IntegrityError: (mysql.connector.errors.IntegrityError) 1062 (23000): Duplicate entry '1' for key 'PRIMARY'
sqlalchemy.exc.ProgrammingError: (pymysql.err.ProgrammingError)
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 使用pymysql连接mysql 1366错误
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pymysql.err.InternalError:
python连接数据库出现pymysql pymysql.err.OperationalError 1045 Access denied错误的解决办法