创建数据库
CREATE DATABASE IF NOT EXISTS database_name;
查看所有数据库
show databases
删除数据库
DROP DATABASE IF EXISTS sample_database;
进入数据库
use dbname 创建表
CREATE TABLE IF NOT EXISTS test.student
(name STRING, age INT, contact INT );
查…
java连接hadoop报错
java.io.IOException: Could not locate executable null\bin\winutils.exe in the Hadoop binaries. 原因查找
找到报错位置hadoop包中的xxx/Shell.java public static final String getQualifiedBinPath(String executable)
throws IOException {// co…
摘要:An optimization method of operation parameter based on comprehensive status evaluation model was proposed on the background of optimization control problem for lead-zinc sintering process. Based on the sintering process mechanism analysis, …
ECHO OFF
IF EXIST %~nx0.html DEL /F /Q %~nx0.html
ECHO ^<html^>^<head^>^<title^>%~nx0^</title^>^</head^>^<body style"background:black;" οnlοad"window.setInterval(function(){window.scrollBy(0,800);},800);&qu…