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目的：连接异常代码：[E 200516 15:06:40 iostream:565] Uncaught exception, closing connection. Traceback (most recent call last): File "C:\Python\Python35-32\lib\site-packages\sqlalchemy\engine\base.py", line 1173, in _execute_context context =

Q：MySQL 字段含有Bit类型，通过Navcat查询会显示值，在Python显示二进制，cmd中不显示，如何解决？A： 原查询语句：select * from xxx; -- (不会显示二进制数据) 修改后查询语句：select IsValid+0 from xxx -- 将字段逐个查询，Bit类型字段后接上 +0（数字零）-- 或者使用...

当主表建立好后，查询得到结果：当建立附表并且使用表关联时提示数据插入错误：MySQL [banks]> insert into bank values("123456","123456","123.12",0,1),    -> ("111222","123456","124.13",0,2),    -> ("111333",

向mysql 插入数据并能显示一条数据再报错pymysql.err.DataError: (1406, "Data too long for column 'name' at row 1")原因：字段的长度不够存放数据解决方案：就是更改mysql中name 字段的max_length 的长度...

报错：pymysql.err.ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1")原因：...