新星计划2023SQL SERVER (01) -- 基础知识

Posted 2023-03-24 百世经纶『一页書』

【新星计划2023】SQL SERVER -- 基础知识

• • 1. Introduction
  • • 1.1 Official Website
    • 1.2 Conn Tool
  • 2. 基础命令
  • • 2.1 建库建表
    • 2.2 Alter
    • 2.3 Drop
    • 2.3 Big Data -- Postgres
  • 3.Awakening

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1. Introduction

1.1 Official Website

• 官方文档（小技巧）
  Officail Website: https://learn.microsoft.com/en-us/sql/sql-server/?view=sql-server-ver16.
  Officail Website(中文): https://learn.microsoft.com/zh-cn/sql/sql-server/?view=sql-server-ver16.
  

1.2 Conn Tool

• 官方自带的
  SQL Server Management Studio (SSMS)
  SSMS Install: https://learn.microsoft.com/en-us/sql/ssms/download-sql-server-management-studio-ssms?view=sql-server-ver16.
  
• 我自己使用的
  Dbeaver
  Dbeaver Install: https://dbeaver.io/.
  

2. 基础命令

2.1 建库建表

// create database
CREATE DATABASE database_name;

// create schema
CREATE SCHEMA schema_name  AUTHORIZATION dbo; 

//create table(主键自增)
CREATE TABLE  database_name.schema_name.table_name | schema_name.table_name | table_name (
	stu_id int IDENTITY(1,1) NOT NULL,
	department_id int,
	stu_province nvarchar(50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
	stu_city nvarchar(50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
	stu_town nvarchar(50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
	stu_address nvarchar(200) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
	stu_score int,
	CONSTRAINT PK__STUDENG__8379F1C4D400EC53 PRIMARY KEY (stu_id)
);

2.2 Alter

//add column
ALTER TABLE STUDENT ADD stu_hobby  nvarchar(200) not null default 0;

// 修改栏位名
ALTER TABLE STUDENT rename column A to B;

// 修改栏位类型
ALTER TABLE STUDENT alter column A type not null;

// 删除栏位
ALTER TABLE STUDENT drop column A;

// 添加主键
ALTER TABLE STUDENT ADD CONSTRAINT PK_STUDENT PRIMARY KEY(stu_id);;

2.3 Drop

// delete database
DROP DATABASE DatabaseName; 

// delete schema
DROP SCHEMA schema_name ;

// delete table
DROP TABLE dbo.STUDENT;

// delete column
ALTER TABLE STUDENT  drop column A;

// query primary key
SELECT name  FROM sys.key_constraints  WHERE type = 'PK' ANDOBJECT_NAME(parent_object_id) = N'tablename';

// delete primary key
ALTER TABLE STUDENT DROP CONSTRAINT PKname; 

2.3 Big Data – Postgres

3.Awakening

     在一秒钟内看到本质的人和花半辈子也看不清一件事本质的人，自然是不一样的命运。

[新星计划]OneKey_一键启动集群 启动Kafka/Zookeeper命令

Kafka一键启动脚本:

cat /export/onekey/slave | while read line
do
{
 echo $line
 ssh $line "source /etc/profile;export JMX_PORT=9988;nohup ${KAFKA_HOME}/bin/kafka-server-start.sh ${KAFKA_HOME}/config/server.properties >/dev/nul* 2>&1 & "
}&
wait
done

Kafka一键关闭脚本:

cat /export/onekey/slave | while read line
do
{
 echo $line
 ssh $line "source /etc/profile;jps |grep Kafka |cut -d' ' -f1 |xargs kill -s 9"
}&
wait
done

nohup bin/zookeeper-server-start.sh config/zookeeper.properties &

#!/bin/bash
ZK_HOME=/export/server/zookeeper-3.4.6

for number in {1..3}
do
	host=node${number}
	echo ${host}
	/usr/bin/ssh ${host} "cd ${ZK_HOME};source /etc/profile;${ZK_HOME}/bin/zkServer.sh start"
	echo "${host} started"
done

一键启动集群脚本:

#!/bin/bash
p=$1
cmd=''
if [ ! $p ]
then echo "please input [start|stop]"
exit 1
fi
if [ $p == 'start' ]
then
cmd='start'
else
cmd='stop'
fi
#start hadoop
/export/server/hadoop/sbin/${cmd}-all.sh >> /export/server/hadoop/${cmd}.log
sleep 3s

#start zookeeper
for (( i=1; i<=3; i++ ))
do
# << E0F 只是一个标识，可以换做其他任意字符，多行复杂脚本使用

  echo "node$i zk ${cmd} ..."
  ssh root@node$i "source /etc/profile; zkServer.sh ${cmd} ;exit; sleep 2s"
done
echo "zk集群${cmd} 完成."
sleep 1s

# start kafka
for (( i=1; i<=3; i++ ))
do
  echo "node$i kafka ${cmd} ..."
  ssh root@node$i "source /etc/profile; kafka-server-${cmd}.sh -daemon /export/server/kafka/config/server.properties; exit; sleep 1s;"
done

# start flink
/export/server/flink/bin/${cmd}-cluster.sh