今天我反对一种新的查询优化问题。
我的问题是:
SELECT *
FROM sanrss
LEFT JOIN sanrum ON sanrum.sanrum___rforefide = sanrss.sanrss___rforefide AND sanrum.sanrum___rfovsnide = sanrss.sanrss___rfovsnide AND sanrum.sanrum___sanrsside = sanrss.sanrsside
LEFT JOIN sanact ON sanact.sanact___rforefide = sanrum.sanrum___rf
你好,我想在容器div中有全宽的div。
<html>
<head>
</head>
<body>
<div class="wrap">
<div class="container">
<div class="row">
<!-- Start content -->
<div class="normal_width"> Hello this is normal width in co
我运行了一个Plesk (OS: Centos 6/Linux (Final)),最近我尝试将MySQL从5.55版本升级到5.6版本。
作为这个领域相对较新的部分,我严格遵循这个普列斯克条款,特别是遵循'Plesk 6‘选项卡中的步骤。
不幸的是,我错误地假设版本8被禁用为默认版本。因此,安装了MySQL版本8,现在给我带来了很大的问题。说到这里,我无法启动MySQL。
我试图通过打开/etc/yum.repos.d/mysql-community.repo Notepad++文件将其降级,从版本8降至版本5.6,在该文件中,我确保输入了以下内容:
# Enable to use M
如果我尝试使用shell,就会遇到API冲突。
/home/username/.python-eggs/MySQL_python-1.2.3c1-py2.6-linux-i686.egg-tmp/_mysql.so:6: RuntimeWarning: Python C API version mismatch for module _mysql: This Python has API version 1012, module _mysql has version 1013.
我在跑:
Python2.6
MySQL服务器版本: 5.0.77
MySQL_python-1.2.3c1
我试图
当我试图安装mysql2适配器gem时,我会得到以下错误:
gem install mysql2 -v 0.3.21
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
/Users/jwan/.rbenv/versions/2.1.2/bin/ruby extconf.rb
checking for ruby/thread.h... yes
checking f
我正在尝试使用yum更新我的THENOS5.2系统。但我一直在犯这个错误:
Transaction Check Error:
file /usr/share/man/man1/pcregrep.1.gz from install of pcre-8.02-1.jason.1.x86_64 conflicts with file from package pcre-6.6-2.el5_1.7.i386
file /usr/share/man/man1/pcretest.1.gz from install of pcre-8.02-1.jason.1.x86_64 conflicts wi
我需要知道准确的MySQL版本,用于magento安装检查。
我从这里得到了MySQl版本:
//Test What Exact Version PHP & MySQL
echo "<h2>Exact Version PHP & MySQL: </h2>";
$mysql = mysqli_connect('localhost', 'root', '');
/* Test the MySQL connection */
if (mysqli_connect_errno()) {
pri
在使用java6和mysql5.1的现有项目上,我们迁移到mysql8.0.24,但是我得到了这个错误。 Caused by: java.sql.SQLException: java.lang.ClassCastException: java.math.BigInteger cannot be cast to java.lang.Long
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1074)
at com.mysql.jdbc.SQLError.createSQLException(
请参阅系统上的MySQL stautus。
[root@n yum.repos.d]# rpm -qa | grep mysql
mysql-libs-5.1.73-3.el6_5.x86_64
mysql-community-release-fc21-5.noarch
[root@n yum.repos.d]# yum remove mysql
Setting up Remove Process
No Match for argument: mysql
Package(s) mysql available, but not installed.
No Packages marked for
我安装了python的Mysqldb,但是当我运行它时,我得到了这个错误:
/Library/Python/2.7/site-packages/MySQL_python-1.2.3-py2.7-macosx-10.7-intel.egg/_mysql.py:3: UserWarning: Module _mysql was already imported from /Library/Python/2.7/site-packages/MySQL_python-1.2.3-py2.7-macosx-10.7-intel.egg/_mysql.pyc, but /Users/bb/Workspac
我正在将我的应用程序复制到一个新服务器上,因为旧服务器损坏了,但是在尝试运行包安装时,gem mysql2未能安装。
[me@localhost redmine]$ gem install mysql2 -v 0.3.21
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
current directory: /home/x-mwojciechow4/.r
在安装Debian 7的MySQL 5.6forDebian7(用ISPConfig)时遇到了很多麻烦
(FYI,我遵循了本教程:http://xmodulo.com/2013/12/upgrade-mysql-server-debian-ubuntu.html)
我的PHPMyAdmin向我展示了这样的信息:
Your PHP MySQL library version 5.5.35 differs from your MySQL server version 5.6.16. This may cause unpredictable behavior.
我试着用智能更新php5-mysql,