HQL代碼格式化

Hive SQL代碼的格式化，之前一直靠規範、自律和手工調整。每個人的書寫習慣都不相同，要達到完全統一併非易事。
現在，通過HUE裏面的代碼格式化快捷鍵操作，提高代碼格式化效率和美化標準，方便好用。

主要快捷鍵：

Command + i (代碼美化、格式化)

Tab   （Indent）
shift + Tab （Outdent）
Command + / （Toggle comment）

Ctrl + Shift + U （Change to lower case）
Ctrl + U （Change to upper case）

格式化流程：

1、按通用要求編寫SQL代碼，如表別名統一、了查詢使用方式統一等
2、將Hue編輯框中的代碼，通過 Command + i,總體格式化
3、根據需要具體微調，如Tab對齊調整、Command + / 註釋添加和去除、大小寫調整等
4、複製代碼到具體etl腳本，發佈上線

樣例：

1、原格式

--nisj
--2020-04-13
--Describe:推廣者信息

insert overwrite table ${c_to_dwt}.dwt_promotion_promoters_full_1d partition (dt='${dt}')
select 
coalesce(a1.id,a2.id) promoters_id,
coalesce(a1.pid,a2.pid) p_id,
coalesce(a1.pname,a2.pname) p_name,
coalesce(a1.username,a2.username) user_name,
coalesce(a1.platform,a2.platform) plat_form,
coalesce(a1.uri,a2.uri) uri,
coalesce(a1.customnumber,a2.customnumber) custom_number,
coalesce(a1.state,a2.state) state,
coalesce(uri_signal,'') uri_signal,coalesce(customnumber_signal,'') customnumber_signal,
coalesce(a1.createtime,a2.createtime) create_time,
coalesce(a1.updatetime,a2.updatetime) update_time,
coalesce(a1.other_platform,a2.other_platform) other_platform,
coalesce(a1.total_income,a2.total_income) total_income,
coalesce(a1.apply_withdraw,a2.apply_withdraw) apply_withdraw,
coalesce(a1.proportion,a2.proportion) proportion,
coalesce(a1.is_frozen,a2.is_frozen) is_frozen
from (select id,pid,pname,username,platform,uri,customnumber,state,from_unixtime(int(createtime/1000)) createtime,from_unixtime(int(updatetime/1000)) updatetime,
reverse(uri_signal) uri_signal,row_number()over(partition by id) uri_rn,
otherplatform other_platform,totalincome total_income,applywithdraw apply_withdraw,proportion proportion,isfrozen is_frozen
from ${c_from_sds}.mysql_api_cfg__promoters_view
LATERAL VIEW explode(split(reverse(uri),',')) uri_list AS uri_signal
where from_unixtime(int(createtime/1000),'yyyy-MM-dd')<='${dt}' and dc__op<>'D') a1
full join (
select id,pid,pname,username,platform,uri,customnumber,state,from_unixtime(int(createtime/1000)) createtime,from_unixtime(int(updatetime/1000)) updatetime,
reverse(customnumber_signal) customnumber_signal,row_number()over(partition by id) customnumber_rn,
otherplatform other_platform,totalincome total_income,applywithdraw apply_withdraw,proportion proportion,isfrozen is_frozen
from ${c_from_sds}.mysql_api_cfg__promoters_view
LATERAL VIEW explode(split(reverse(customnumber),',')) customnumber_list AS customnumber_signal
where from_unixtime(int(createtime/1000),'yyyy-MM-dd')<='${dt}' and dc__op<>'D') a2 
on a1.id=a2.id and a1.uri_rn=a2.customnumber_rn
;

2、格式化後

--nisj
--2020-04-13
--Describe:推廣者信息

INSERT overwrite TABLE ${c_to_dwt}.dwt_promotion_promoters_full_1d partition (dt='${dt}')
SELECT coalesce(a1.id,a2.id) promoters_id,
       coalesce(a1.pid,a2.pid) p_id,
       coalesce(a1.pname,a2.pname) p_name,
       coalesce(a1.username,a2.username) user_name,
       coalesce(a1.platform,a2.platform) plat_form,
       coalesce(a1.uri,a2.uri) uri,
       coalesce(a1.customnumber,a2.customnumber) custom_number,
       coalesce(a1.state,a2.state) STATE,
       coalesce(uri_signal,'') uri_signal,
       coalesce(customnumber_signal,'') customnumber_signal,
       coalesce(a1.createtime,a2.createtime) create_time,
       coalesce(a1.updatetime,a2.updatetime) update_time,
       coalesce(a1.other_platform,a2.other_platform) other_platform,
       coalesce(a1.total_income,a2.total_income) total_income,
       coalesce(a1.apply_withdraw,a2.apply_withdraw) apply_withdraw,
       coalesce(a1.proportion,a2.proportion) proportion,
       coalesce(a1.is_frozen,a2.is_frozen) is_frozen
FROM
  (SELECT id,
          pid,
          pname,
          username,
          platform,
          uri,
          customnumber,
          STATE,
          from_unixtime(int(createtime/1000)) createtime,
          from_unixtime(int(updatetime/1000)) updatetime,
          reverse(uri_signal) uri_signal,
          row_number()over(partition BY id) uri_rn,
          otherplatform other_platform,
          totalincome total_income,
          applywithdraw apply_withdraw,
          proportion proportion,
          isfrozen is_frozen
   FROM ${c_from_sds}.mysql_api_cfg__promoters_view LATERAL VIEW explode(split(reverse(uri),',')) uri_list AS uri_signal
   WHERE from_unixtime(int(createtime/1000),'yyyy-MM-dd')<='${dt}'
     AND dc__op<>'D') a1
FULL JOIN
  (SELECT id,
          pid,
          pname,
          username,
          platform,
          uri,
          customnumber,
          STATE,
          from_unixtime(int(createtime/1000)) createtime,
          from_unixtime(int(updatetime/1000)) updatetime,
          reverse(customnumber_signal) customnumber_signal,
          row_number()over(partition BY id) customnumber_rn,
          otherplatform other_platform,
          totalincome total_income,
          applywithdraw apply_withdraw,
          proportion proportion,
          isfrozen is_frozen
   FROM ${c_from_sds}.mysql_api_cfg__promoters_view LATERAL VIEW explode(split(reverse(customnumber),',')) customnumber_list AS customnumber_signal
   WHERE from_unixtime(int(createtime/1000),'yyyy-MM-dd')<='${dt}'
     AND dc__op<>'D') a2 ON a1.id=a2.id AND a1.uri_rn=a2.customnumber_rn ;