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贝塔ZQ:
导出数据到excel文档中,可以使用pageoffice插件实 ...
Java POI 数据导出到Excel 2010 -
熊佳佳:
key是需要向支付宝购买额度的
支付宝即时到帐接口调试入口页面 -
zhuzuofei:
你好,你代码中提供的pid,key好像是无效的...
支付宝即时到帐接口调试入口页面 -
xingxing:
光有图没有解决方案......
centOS setup 命令 设置网络参数 -
atgoingguoat:
...
Android:简单的图片浏览器
查看编码
注意:使用该命令重启MySQL后失效
需手动改配置文件my.ini
查看某张表的编码及字段的相关信息
注意:使用该命令重启MySQL后失效
需手动改配置文件my.ini
查看某张表的编码及字段的相关信息
# 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 specify it as an option during the # MySQL client library initialization. # [client] port=3306 [mysql] default-character-set=latin1 # SERVER SECTION # ---------------------------------------------------------------------- # # The following options will be read by the MySQL Server. Make sure that # you have installed the server correctly (see above) so it reads this # file. # [mysqld] # The TCP/IP Port the MySQL Server will listen on port=3306 #Path to installation directory. All paths are usually resolved relative to this. basedir="D:/Program Files (x86)/MySQL/MySQL Server 5.1/" #Path to the database root datadir="C:/ProgramData/MySQL/MySQL Server 5.1/Data/" # The default character set that will be used when a new schema or table is # created and no character set is defined default-character-set=latin1 # The default storage engine that will be used when create new tables when default-storage-engine=INNODB # Set the SQL mode to strict sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION" # The maximum amount of concurrent sessions the MySQL server will # allow. One of these connections will be reserved for a user with # SUPER privileges to allow the administrator to login even if the # connection limit has been reached. max_connections=100 # Query cache is used to cache SELECT results and later return them # without actual executing the same query once again. Having the query # cache enabled may result in significant speed improvements, if your # have a lot of identical queries and rarely changing tables. See the # "Qcache_lowmem_prunes" status variable to check if the current value # is high enough for your load. # Note: In case your tables change very often or if your queries are # textually different every time, the query cache may result in a # slowdown instead of a performance improvement. query_cache_size=0 # The number of open tables for all threads. Increasing this value # increases the number of file descriptors that mysqld requires. # Therefore you have to make sure to set the amount of open files # allowed to at least 4096 in the variable "open-files-limit" in # section [mysqld_safe] table_cache=256 # Maximum size for internal (in-memory) temporary tables. If a table # grows larger than this value, it is automatically converted to disk # based table This limitation is for a single table. There can be many # of them. tmp_table_size=34M # How many threads we should keep in a cache for reuse. When a client # disconnects, the client's threads are put in the cache if there aren't # more than thread_cache_size threads from before. This greatly reduces # the amount of thread creations needed if you have a lot of new # connections. (Normally this doesn't give a notable performance # improvement if you have a good thread implementation.) thread_cache_size=8 #*** MyISAM Specific options # The maximum size of the temporary file MySQL is allowed to use while # recreating the index (during REPAIR, ALTER TABLE or LOAD DATA INFILE. # If the file-size would be bigger than this, the index will be created # through the key cache (which is slower). myisam_max_sort_file_size=100G # If the temporary file used for fast index creation would be bigger # than using the key cache by the amount specified here, then prefer the # key cache method. This is mainly used to force long character keys in # large tables to use the slower key cache method to create the index. myisam_sort_buffer_size=68M # Size of the Key Buffer, used to cache index blocks for MyISAM tables. # Do not set it larger than 30% of your available memory, as some memory # is also required by the OS to cache rows. Even if you're not using # MyISAM tables, you should still set it to 8-64M as it will also be # used for internal temporary disk tables. key_buffer_size=55M # Size of the buffer used for doing full table scans of MyISAM tables. # Allocated per thread, if a full scan is needed. read_buffer_size=64K read_rnd_buffer_size=256K # This buffer is allocated when MySQL needs to rebuild the index in # REPAIR, OPTIMZE, ALTER table statements as well as in LOAD DATA INFILE # into an empty table. It is allocated per thread so be careful with # large settings. sort_buffer_size=256K #*** INNODB Specific options *** # Use this option if you have a MySQL server with InnoDB support enabled # but you do not plan to use it. This will save memory and disk space # and speed up some things. #skip-innodb # Additional memory pool that is used by InnoDB to store metadata # information. If InnoDB requires more memory for this purpose it will # start to allocate it from the OS. As this is fast enough on most # recent operating systems, you normally do not need to change this # value. SHOW INNODB STATUS will display the current amount used. innodb_additional_mem_pool_size=3M # If set to 1, InnoDB will flush (fsync) the transaction logs to the # disk at each commit, which offers full ACID behavior. If you are # willing to compromise this safety, and you are running small # transactions, you may set this to 0 or 2 to reduce disk I/O to the # logs. Value 0 means that the log is only written to the log file and # the log file flushed to disk approximately once per second. Value 2 # means the log is written to the log file at each commit, but the log # file is only flushed to disk approximately once per second. innodb_flush_log_at_trx_commit=1 # The size of the buffer InnoDB uses for buffering log data. As soon as # it is full, InnoDB will have to flush it to disk. As it is flushed # once per second anyway, it does not make sense to have it very large # (even with long transactions). innodb_log_buffer_size=2M # InnoDB, unlike MyISAM, uses a buffer pool to cache both indexes and # row data. The bigger you set this the less disk I/O is needed to # access data in tables. On a dedicated database server you may set this # parameter up to 80% of the machine physical memory size. Do not set it # too large, though, because competition of the physical memory may # cause paging in the operating system. Note that on 32bit systems you # might be limited to 2-3.5G of user level memory per process, so do not # set it too high. innodb_buffer_pool_size=106M # Size of each log file in a log group. You should set the combined size # of log files to about 25%-100% of your buffer pool size to avoid # unneeded buffer pool flush activity on log file overwrite. However, # note that a larger logfile size will increase the time needed for the # recovery process. innodb_log_file_size=53M # Number of threads allowed inside the InnoDB kernel. The optimal value # depends highly on the application, hardware as well as the OS # scheduler properties. A too high value may lead to thread thrashing. innodb_thread_concurrency=10
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数据源
2017-04-08 15:08 270package com.demo.dao.utils; ... -
MySQL系统时间
2016-06-24 16:20 445select current_date,now(),sysd ... -
Cent OS 7 Linux下5.6.31 MySQL Community Server (GPL)添加用户
2016-06-06 09:30 466[root@localhost xiongjiajia]# ... -
DbVisualizer 9.2.15
2016-06-04 17:25 1531DbVisualizer 9.2.15 Linux 注册失 ... -
MongoDB 安装
2016-06-04 08:59 298bash-4.2$ su密码:[root@dbserver l ... -
CentOS 7 Linux 安装MySQL
2016-06-03 16:15 917http://repo.mysql.com/ [r ... -
mongodb-win32-x86_64-2008plus-ssl-3.2.0-signed Hello World
2016-05-23 07:54 625Windows PowerShell版权所有 (C ... -
Oracle Enterprise Manager Cloud Control 12c
2015-07-20 16:10 607http://www.oracle.com/technetwo ... -
oracle 存储过程建表
2014-07-31 18:38 580create or replace procedure pro ... -
Oracle plsql 参考文档
2014-07-09 21:01 657Oracle plsql 参考文档 -
Oracle创建表 create
2014-07-08 20:53 572drop table stu;drop table cla ... -
Oracle select 语句 案例大全
2014-07-08 20:39 570select * from emp;select * fr ... -
Oracle salplus 导出导入数据
2014-03-12 16:00 579... -
Oracle select 语句
2014-03-12 14:59 576select * from emp;select * fr ... -
快速启动关闭MySQL服务的批处理代码
2013-12-23 15:54 282@echo off for /f "skip=3 ... -
PowerDesigner反向工程
2013-12-05 17:20 629... -
PowerDesigner连MySQL
2013-12-05 12:01 600http://dev.mysql.com/downloads ... -
SQL server 2008 安装
2013-10-25 15:15 571只选用以下功能就可以完成测试和学习的功能了 ... -
mysql 改列名
2013-09-25 17:40 693alter table 表名 change 旧列名 新列名 列 ... -
SQL脚本
2013-05-08 15:02 801MySQL版 /* Navicat MySQL Data ...
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