mysql的配置文件my.ini
# MySQL Server Instance Configuration File
# ----------------------------------------------------------------------
# Generated by the MySQL Server Instance Configuration Wizard
#
#
# Installation Instructions
# ----------------------------------------------------------------------
#
# On Linux you can copy this file to /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options
# (@localstatedir@ for this installation) or to
# ~/.my.cnf to set user-specific options.
#
# On Windows you should keep this file in the installation directory
# of your server (e.g. C:\Program Files\MySQL\MySQL Server X.Y). To
# make sure the server reads the config file use the startup option
# "--defaults-file".
#
# To run run the server from the command line, execute this in a
# command line shell, e.g.
# mysqld --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini"
#
# To install the server as a Windows service manually, execute this in a
# command line shell, e.g.
# mysqld --install MySQLXY --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini"
#
# And then execute this in a command line shell to start the server, e.g.
# net start MySQLXY
#
#
# Guildlines for editing this file
# ----------------------------------------------------------------------
#
# In this file, you can use all long options that the program supports.
# If you want to know the options a program supports, start the program
# with the "--help" option.
#
# More detailed information about the individual options can also be
# found in the manual.
#
#
# CLIENT SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by MySQL client applications.
# Note that only client applications shipped by MySQL are guaranteed
# to read this section. If you want your own MySQL client program to
# honor these values, you need to speci
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一、查看用户
1、显示当前使用的user及host：
mysql>select USER();
2、显示该数据库授权登陆的用户名(不显示重复用户名)：
mysql>use mysql;
mysql>select distinct(User) from user;
3、显示该数据库授权登陆的用户名及host限制：
（1）方法一：
mysql>use mysql;
mysql>select User,host from u ......
1、取字段注释
Select COLUMN_NAME 列名, DATA_TYPE 字段类型, COLUMN_COMMENT 字段注释
from INFORMATION_SCHEMA.COLUMNS
Where table_name = 'companies'##表名
AND table_schema = 'testhuicard'##数据库名
AND column_name LIKE 'c_name'##字段名
2、取得表注释
Select table_name 表名,TABLE_COMMENT 表注释 ......
在看项目的是看到mysql版本的项目，发现执行多条sql语句是都是先分离一条条的数据库再一条条执行，我想应该有办法一条条执行的吧
所以今天特意的查找了一下
在jdbc下说可以设置连接字符串的时候设置一下
设置成如下的 jdbc:mysql://192.168.3.180/sample?user=root&password=&allowMultiQueries=true
就可以执� ......
存储过程是一种存储在数据库中的程序（就像正规语言里的子程序一样），准确的来说，MySQL支持的“routines（例程）”有两种：一是我们说的存储过程， 二是在其他SQL语句中可以返回值的函数（使用起来和Mysql预装载的函数� ......
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一、介绍
========
测试环境：
Server1:ndbd 192.168.0.11
Server2:ndbd 192.168.0.12
Server3:mysqld --ndb-cluster 192.168.0.13 (ndbd_mgm ndbd_mgmd也在本机)
操作系统均为
RH ES3
kernel-2.4.21-9.EL
glibc-2.3.2-95.6
所需软件包：
mysql-max-5.0.22-lin ......
