feat: first commt

.gitignore

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+*.json
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*

work常用/GIT操作.md

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+* 创建本地及远程仓库
+
+  ```shell
+  # 从命令行创建一个新的仓库
+  touch README.md
+  git init
+  git add README.md
+  git commit -m "first commit"
+  git remote add origin http://x.x.x.x:1314/X6738/yfzx-yn-cloudmirror-group-v3.0.git
+  git push -u origin master
+
+  # 从命令行推送已经创建的仓库
+  git remote add origin http://x.x.x.x:1314/X6738/yfzx-yn-cloudmirror-group-v3.0.git
+  git push -u origin master
+  ```
+
+* 常用命令
+
+```shell
+# 列出本地分支及最后一次提交
+git branch -v
+# 检出远程地址
+git clone xxxxxxx.git
+# 检出远程分支
+git clone -b xxx xxxxx.git
+# 把指定暂存区文件提交到本地仓库
+git commit -m "<描述信息>"  xxx.java
+# 提交全部
+git commit -m "<描述信息>"  *
+# 从远程仓库获取最新的版本到本地tmp分支
+git fetch <远程主机名> <分支名>
+# 显示提交记录
+git log
+# 本地仓库分支推送到远程仓库
+git push <远程仓库> <本地分支名>：<远程分支名>
+# 列出远程仓库详细信息
+git remote -v
+# 查看本地仓库状态
+git status
+# 从远程仓库获取最新版本
+git pull
+```

work常用/PG 常用SQL.md

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+* 批量like
+
+  ```sql
+  like any (array['%.jpg','%.jpeg'])
+  ```
+
+* 创建序列
+
+  ```sql
+  create SEQUENCE id_seq
+  START WITH 1
+  INCREMENT BY 1
+  NO MINVALUE
+  NO MAXVALUE
+  CACHE 1;
+
+  alter table kx_hospital ALTER COLUMN id set DEFAULT nextval('_id_seq')
+  ```
+* 获取当前时间绝对秒
+
+  ```sql
+  select floor(extract(epoch from now()))
+  ```
+* 雪花ID函数
+
+  ```sql
+  create SEQUENCE table_id_seq
+  START WITH 1
+  INCREMENT BY 1
+  NO MINVALUE
+  NO MAXVALUE
+  CACHE 1;
+
+  CREATE OR REPLACE FUNCTION "public"."snow_next_id"(OUT "result" int8)
+    RETURNS "pg_catalog"."int8" AS $BODY$
+  DECLARE
+     our_epoch bigint := 1314220021721;
+     seq_id bigint;
+     now_millis bigint;
+     shard_id int := 5;
+  BEGIN
+     seq_id := nextval('table_id_seq') % 1024;
+     SELECT FLOOR(EXTRACT(EPOCH FROM clock_timestamp()) * 1000) INTO now_millis;
+     result := (now_millis - our_epoch) << 23;
+     result := result | (shard_id << 10);
+     result := result | (seq_id);
+  END;
+  $BODY$
+    LANGUAGE plpgsql VOLATILE
+    COST 100
+  ```
+
+* count统计过滤及去重
+
+  ```sql
+  count(distinct(speaker_id||speak_time||content)) FILTER (where t.mark='text')   ----- 使用distinct 去重 filter用于过滤
+  ```
+
+* PG 操作schema
+
+  ```sql
+  drop SCHEMA "public" CASCADE --强制删除，包含模式下所有对象（表、函数等）
+  create SCHEMA "public" --创建
+  alter schema name RENAME TO new_name -- 修改模式名称
+  alter schema name OWNER TO new_owner -- 修改拥有者
+  ```
+* 获取单位时间间隔时间
+
+  ```sql
+  -- 获取6个月前时间
+  select to_char((select now() - interval '6 month'),'yyyy-MM-dd hh24:mi:ss')
+  ```
+
+* 窗口函数分组统计(根据collect_code分组，并以collect_time 倒序)
+
+  ```sql
+  select collect_value,row_number() over(PARTITION by collect_code ORDER BY collect_time desc) from nc_data_collect_value_test
+  ```
+
+* lead函数获取上一条记录，并计算增量
+
+  ```sql
+  select create_date,node_value as total,next_day_total,next_day_total::int8-node_value::int8 as increment from (
+  with a as (SELECT create_date, node_value FROM nc_data_node_value_detail WHERE node_code = '' ORDER BY create_date DESC )
+  select create_date,node_value,lead(node_value,1) over (ORDER BY create_date) next_day_total FROM a ORDER BY create_date desc) tt
+  ```
+
+* lag函数获取下一条记录
+
+  ```sql
+  select create_date,node_value as total,next_day_total,abs(next_day_total::int8-node_value::int8) as increment from (
+  with a as (SELECT create_date, node_value FROM nc_data_node_value_detail WHERE node_code = '' ORDER BY create_date DESC )
+  select create_date,node_value,lag(node_value,1) over (ORDER BY create_date) next_day_total FROM a ORDER BY create_date desc) tt
+  ```

work常用/PG-雪花ID.md

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+create SEQUENCE table_id_seq  
+START WITH 1  
+INCREMENT BY 1  
+NO MINVALUE  
+NO MAXVALUE  
+CACHE 1;
+
+CREATE OR REPLACE FUNCTION "public"."snow_next_id"(OUT "result" int8)  
+  RETURNS "pg_catalog"."int8" AS $BODY$  
+DECLARE  
+   our_epoch bigint := 1314220021721;  
+   seq_id bigint;  
+   now_millis bigint;  
+   shard_id int := 5;  
+BEGIN  
+   seq_id := nextval('table_id_seq') % 1024;  
+   SELECT FLOOR(EXTRACT(EPOCH FROM clock_timestamp()) * 1000) INTO now_millis;  
+   result := (now_millis - our_epoch) << 23;  
+   result := result | (shard_id << 10);  
+   result := result | (seq_id);  
+END;  
+$BODY$  
+  LANGUAGE plpgsql VOLATILE  
+  COST 100

work常用/PG12 导入导出sql文件.md

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+```sql
+导出：
+export PGPASSWORD=密码 && /opt/pgsql/bin/pg_dump -U 业务用户名 -d 库名 -h 127.0.0.1 --port=端口 -w > bak.sql
+
+导入：
+export PGPASSWORD=密码 && /opt/pgsql/bin/psql -U 业务用户名 -d 库名 -h 127.0.0.1 --port=端口 -w  -f  bak.sql
+```

work常用/PG12 建库.md

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+```
+cd /home/NebulaBS_Dbn_PG_Safe_Tool-install-1.0.0
+
+编辑globe.common.conf 文件
+
+执行sh install.sh 参数
+
+脚本参数说明user 添加用户, db 创建库 ，access 添加访问权限
+
+新建库并且新建用户时，命令执行顺序user ---> db ---> access
+
+注：新增ip时，需要把原有IP注释
+```

work常用/beeline.md

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+beeline -u "jdbc:hive2://x.x.x.x:10000/default;principal=hive/host@DC1.FH.COM;hive.server2.proxy.user=abc=abccc"

work常用/power-shell.md

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+* 批量删除某类文件
+
+  ```sql
+  get-childitem * -include *.jar -recurse|remove-item
+  ```

work常用/python 打包exe.md

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+1. 安装pyinstaller
+
+    [Pyinstall3.6及依赖包.zip](assets/Pyinstall3.6及依赖包-20220524173110-02m5h8w.zip)
+2. 在需要打包的入口文件目录下执行 ，会生成release 文件夹
+
+    ```sql
+    pyinstaller -F --distpath release test.py
+    ```

work常用/常用linux命令.md

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+* 显示前N个
+
+  ```
+  ll -lht|head -n 20
+  ```
+
+* 压缩命令过长
+
+  ```shell
+  find ./ -name '*' -print |zip files -@
+  ```
+
+* 合并文件
+
+  ```sql
+  cat *.txt > target.txt
+  ```
+
+* 配置定时任务
+
+  ```sql
+  root 用户
+  vim /etc/crontab
+
+  SHELL=/bin/bash
+  PATH=/sbin:/bin:/usr/sbin:/usr/bin
+  MAILTO=root
+
+  # For details see man 4 crontabs
+
+  # Example of job definition:
+  # .---------------- minute (0 - 59)
+  # |  .------------- hour (0 - 23)
+  # |  |  .---------- day of month (1 - 31)
+  # |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...
+  # |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat
+  # |  |  |  |  |
+  # *  *  *  *  * user-name  command to be executed
+  20 04 * * * root reboot
+
+  # 加载配置
+  crontab /etc/crontab
+
+  # 重启crontab服务
+  systemctl restart crond.service
+  ```
+
+* 查看上一次启动
+
+  ```sql
+  who -b
+  ```
+
+* 切分文件
+
+  ```sql
+  # 按大小切分
+  split -b 100m xxxx
+  # 按行切分
+  split -l xxxx
+  # 设置拆分后文件名,指定数字后缀
+  split -b 100m -d xxxx xxxx_part_
+  ```
+
+* 显示文件大小
+
+  ```sql
+  du -sh xxxx
+  ```
+
+* grep
+
+  ```sql
+  # 高亮查找结果
+  grep --color "test" catalina.out
+  # 显示在第几行
+  grep -n test catalina.out
+  ```
+
+* zip
+
+  ```shell
+  # 压缩
+  zip -r ./xxx.zip ./*
+  # 解压
+  unzip xxx.zip
+  # 查看压缩文件内容
+  unzip -v xxx.zip
+  # 从zip中删除xxx.txt文件
+  zip xxx.zip -d xxx.txt
+  ```
+* 软链接
+
+  ```shell
+  ln -s 源文件名 软链接文件名
+  ```
+
+* 查看端口占用情况
+
+  ```shell
+  # 查看所有
+  lsof -i
+  # 查看指定端口
+  lsof -i:8080
+  # 查看文件进程
+  lsof xxx.txt
+  ```

work常用/常用公式.md

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+* 计算组合数
+
+  $$
+  x=n(n-1)/2
+  $$