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oracle VS mysql 的分页查询(oracle和mysql分页查询语句)

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关于oracleVSmysql的分页查询和oracle和mysql分页查询语句的问题就给大家分享到这里,感谢你花时间阅读本站内容,更多关于Can''tconnecttolocalMySQLserver

关于oracle VS mysql 的分页查询oracle和mysql分页查询语句的问题就给大家分享到这里,感谢你花时间阅读本站内容,更多关于Can''t connect to local MySQL server through socket ''/var/lib/mysql/mysql.sock''、centos7 设置 mysql 自启动的配置文件中 [Service] User=mysql Group=mysql,user 和 group 这边的 mysql 是指的什么?centos 的登录用户名?、ERROR 2002 (HY000): Can''t connect to local MySQL server through socket ''/var/lib/mysql/mysql.sock...、For oracle databases, if the top showing the oracle database, then oracle process is using the top c等相关知识的信息别忘了在本站进行查找喔。

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oracle VS mysql 的分页查询(oracle和mysql分页查询语句)

oracle VS mysql 的分页查询(oracle和mysql分页查询语句)

首先是oracle: String sql = select * from ( select t.*,rownum as num from (select * from user1 where 1=1 ; SetEntryString, Object set = m.entrySet(); Iterator io = set.iterator(); while (io.hasNext()) { Map.EntryString, Object me = (Map.En

首先是oracle:

String sql = " select * from ( select t.*,rownum as num from (select * from user1  where 1=1 ";

Set> set = m.entrySet();
Iterator io = set.iterator();
while (io.hasNext()) {
Map.Entry me = (Map.Entry) io.next();
if("username".equals(me.getKey()) && !"".equals(me.getValue())){
sql += " and " + me.getKey() + " like ''%"+ me.getValue()  +"%''" ;
}
if("startTime".equals(me.getKey()) && !"".equals(me.getValue())){
sql += " and " + me.getKey() + " >= ''" + me.getValue() +"''";
}
if("endTime".equals(me.getKey()) && !"".equals(me.getValue())){
sql += " and " + me.getKey() + " }
if("sort".equals(me.getKey()) && !"".equals(me.getValue())){
sql += " order by " + me.getValue() ;
}
if("order".equals(me.getKey()) && !"".equals(me.getValue())){
sql += " " + me.getValue();
}
}
sql += " )t) " ;
sql = sql +" where num >=" + (currentPage-1)*pageSize +" and  num


  接着是MySQL:

String sql = " select * from user  where 1=1 ";

Set> set = m.entrySet();
Iterator io = set.iterator();
while (io.hasNext()) {
Map.Entry me = (Map.Entry) io.next();
if("username".equals(me.getKey()) && !"".equals(me.getValue())){
sql += " and " + me.getKey() + " like ''%"+ me.getValue()  +"%''" ;
}
if("startTime".equals(me.getKey()) && !"".equals(me.getValue())){
sql += " and " + me.getKey() + " >= ''" + me.getValue() +"''";
}
if("endTime".equals(me.getKey()) && !"".equals(me.getValue())){
sql += " and " + me.getKey() + " }
if("sort".equals(me.getKey()) && !"".equals(me.getValue())){
sql += " order by " + me.getValue() ;
}
if("order".equals(me.getKey()) && !"".equals(me.getValue())){
sql += " " + me.getValue();
}
}
sql = sql +" limit " + (currentPage-1)*pageSize +" , "  + pageSize ;

pageSize 该页有多少条数据,currentPage该页码






Can''t connect to local MySQL server through socket ''/var/lib/mysql/mysql.sock''

Can''t connect to local MySQL server through socket ''/var/lib/mysql/mysql.sock''

MySQL已经被我移到数据盘了,本地连接数据库会报错:Can''t connect to local MySQL server through socket ''/var/lib/mysql/mysql.sock''

但是远程是可以连接的,my.cnf设置mysql的根目录也改成了数据盘的地址,还要在加上client的参数,设置如下:

[client]
socket = /home/data/mysql/mysql.sock

之后重启下mysql就可以了

centos7 设置 mysql 自启动的配置文件中 [Service] User=mysql Group=mysql,user 和 group 这边的 mysql 是指的什么?centos 的登录用户名?

centos7 设置 mysql 自启动的配置文件中 [Service] User=mysql Group=mysql,user 和 group 这边的 mysql 是指的什么?centos 的登录用户名?

centos7 设置 mysql 自启动的配置文件中

[Unit]
Description=MySQL Server
Documentation=man:mysqld(8)
Documentation=http://dev.mysql.com/doc/refman/en/using-systemd.html
After=network.target
After=syslog.target

[Install]
WantedBy=multi-user.target

[Service]
User=mysql
Group=mysql
ExecStart=/usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf
LimitNOFILE = 5000
#Restart=on-failure
#RestartPreventExitStatus=1
#PrivateTmp=false

这里的

[Service]

User=mysql

Group=mysql,

user 和 group 这边的 mysql 是指的什么?centos 的登录用户名?还是其他呢?

ERROR 2002 (HY000): Can''t connect to local MySQL server through socket ''/var/lib/mysql/mysql.sock...

ERROR 2002 (HY000): Can''t connect to local MySQL server through socket ''/var/lib/mysql/mysql.sock...

今天在配置客户服务器的时候遇到了一个很奇怪的问题,MySQL能够正常启动和停止,但在使用mysql -u root -p进入mysql的时候,出现标题所示的错误

根据错误提示,/var/lib/mysql目录下面缺少mysql.sock文件,将数据库的data目录下的mysql.sock软链到/var/lib/mysql目录下面就好了,mysql.sock文件是数据库启动后自动生成的,没有启动时是没有的

For oracle databases, if the top showing the oracle database, then oracle process is using the top c

For oracle databases, if the top showing the oracle database, then oracle process is using the top c

Note 805586.1 Troubleshooting Session Administration (Doc ID 805586.1) Note 822527.1 How To Find Where The Memory Is Growing For A Process (Doc ID 822527.1) Note 273646.1 How to diagnose the high cpu utilization of ORACLE.EXE in Windows environment Note 728539.1 Find Blocking Sessions In sqlPLUS Note 61552.1 Troubleshooting Oracle Database Hanging Issues for versions from 7 to 9--Exhaustive Note 164760.1 Detecting and Resolving Locking Conflicts using TopSessions

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