export JAVA_HOME=/usr/java/jdk1.8.0_181
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:%{JAVA_HOME}/lib:%{JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

sudo passwd root 修改密碼

Ubuntu

獲取ubuntu的更新 sudo apt-get update

安裝SSH服務:sudo apt-get install openssh-server

VMware

5A02H-AU243-TZJ49-GTC7K-3C61N

華碩F8主機板

Pycharm

http://btsha.com:41017
-javaagent:D:\Program Files\PyCharm\bin\JetbrainsCrack-3.1-release-enc.jar

 
ThisCrackLicenseId-{
"licenseId":"11011",
"licenseeName":"Wechat",
"assigneeName":"Naked sleep of pig",
"assigneeEmail":"[email protected]",
"licenseRestriction":"",
"checkConcurrentUse":false,
"products":[
{"code":"II","paidUpTo":"2099-12-31"},
{"code":"DM","paidUpTo":"2099-12-31"},
{"code":"AC","paidUpTo":"2099-12-31"},
{"code":"RS0","paidUpTo":"2099-12-31"},
{"code":"WS","paidUpTo":"2099-12-31"},
{"code":"DPN","paidUpTo":"2099-12-31"},
{"code":"RC","paidUpTo":"2099-12-31"},
{"code":"PS","paidUpTo":"2099-12-31"},
{"code":"DC","paidUpTo":"2099-12-31"},
{"code":"RM","paidUpTo":"2099-12-31"},
{"code":"CL","paidUpTo":"2099-12-31"},
{"code":"PC","paidUpTo":"2099-12-31"}
],
"hash":"2911276/0",
"gracePeriodDays":7,
"autoProlongated":false}
 

建庫 字符集 utf8 -- UTF-8 Unicode
排序 utf8_general_ci
建表 utf8 utf8_general_ci

varchar

分頁
select * from user limit 0,2

                     起始頁 列數

-- 1、欄位 varchar2/varchar,時間
-- 2 、分頁不一樣
-- select s.* from (select q.*,rownum rn from tableq q) s where s.rn < 10

-- select * from t_mvc_book limit 5,5;
--3、oracle 與 mysql基本上是一致的，oracle將字串轉換成時間型別，to_char,to_date,mysql是不一樣的

delete from

NAVH-WK6A-DMVK-DKW3

解除安裝
服務 關閉
解除安裝mysql 2

登錄檔編輯器 win+r regedit

HKEY_LOCAL_MACHINE 3
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MySQL57
 my
mysql57 刪除
C:\ProgramData\MySQL

安裝
server only