[问题]mysql从5.6升级到5.7后出现:插入数据和修改数据时出错Caused by: com.ibatis.common.jdbc.exception.NestedSQLException: --- The error occurred while applying a parameter map. --- Check the findOrderList-InlineParameterMap. --- Check the statement (query failed). --- Caus
以前在mysql5.7上执行如下sql语句没有问题 SELECT DISTINCT u.*,c.content userCategory FROM m_user u LEFT JOIN m_category c ON u.user_category=c.category_id LEFT JOIN m_user_role mr ON u.user_id=mr.user_id WHERE 1=1 AND u.user_status=0 ORDER BY u.createtime DESC LIMIT
写jsp加载数据驱动以后老是提示Only a type can be imported. com.mysql.jdbc.Connection resolves to a package的错误,然而改成java就无报错 出错的原因:没有成功引入包 解决方法:将mysql-connector-java-5.1.39-bin.jar放到tomcat的bin目录下就可以解决
报错会如下: /usr/local/bin/brew: /usr/local/Library/brew.rb: /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby: bad interpreter: No such file or directory /usr/local/bin/brew: line 23: /usr/local/Library/brew.rb: Undefined error: 0 作者解释如
刚开始使用PHP连接MySQL数据库的时候,如果数据库连接不成功或者,对MySQL数据库进行增删改查等操作的时候,SQL语句存在错误,而在执行PHP文件的时候,浏览器并不会抛出错误的原因,一般是空白显示.此时打开数据库查看,数据库并无变化,可知这些PHP语句根本没有执行任何操作. Mysql_connect("主机地址","用户名","密码","数据库"),采用该方法连接数据库的时候基本操作见下 $connection = m
具体错误提示是:django.db.utils.NotSupportedError: DISTINCT ON fields is not supported by this database backend 刚好遇到mysql数据库查重,使用distinct方法来做去重查询,结果遇到这个错误.先看一下distinct的源码: def distinct(self, *field_names): """ Return a new QuerySet instance that wi
解决TF升级到1.5之后seq2seq.py出现的引用报错: 1.4时候使用rnn_cell_impl的_Linear没有问题的,TF升级到1.5之后这一行就运行不过去了,查到的方法是引用core_rnn_cell下的_Linear. from tensorflow.contrib.rnn.python.ops import core_rnn_cell from tensorflow.python.framework import dtypes from tensorflow.python.fr