使用到的知识点:
1、使用with临时存储sql语句,格式【with as xxx(), as xxx2() 】以减少代码;
2、使用round()取小数点后几位;
3、使用to_char()将时间格式的数据转换为text型;
4、使用split_part(xx,xx2,xx3)函数对文本型数据进行切分;
5、使用group by之后利用count()进行统计;
6、join 以及 left join之间的区别;
7、使用join连接多个表,基本格式:【a join b on a.id = b.id join c on a.id = c.id】;
8、嵌套查询(select * from (select * from ));
9、case xx when a then b else c end xx2:判断xx,如果满足a,赋值为b,否则赋值为c,最后取别名xx2;
10、使用current_date获取年月日:2021-01-28,使用now()获取当前时间戳,使用select to_char(now(),'YYYY')获取年;
11、使用【||】进行字符串的拼接;
12、使用to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss' )将CURRENT_DATE 拼接时间后转时间戳;
13、使用【时间戳 + '-1 day'】进行时间戳的天数减一;
14、使用:【字段::类型】可以将字段转换为指定类型,或者使用【cast(字段 as 类型)】;
15、使用【insert into 表名(字段名1,字段名2) select * from 表名2 】将查询出来的值批量添加到另一个表中;
with tmp as (
select * from (
select
d1.user_id,
d1.company_name,
d1.website_name,
d1.source_top,
round( 100 * d1.source_top / d2.news_num, 2 ) AS ratio,
row_number( ) OVER ( PARTITION BY d1.user_id, d1.company_name ) AS row_num
from
(SELECT
t1.user_id,
split_part ( t2.monitor_words_company, '#;#', 1 ) AS company_name,
website_name AS website_name,
count( website_name ) AS source_top
FROM
service.eoias_sentiment_analysis_result t1
JOIN service.eoias_crawler_key_param t2 ON t1.case_id = cast( t2.id AS text )
WHERE
t1.release_time >= to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss' ) + '-1 day'
AND t1.release_time <= to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss' )
GROUP BY
t1.user_id,
company_name,
website_name) d1
join
(SELECT
user_id,
company_name,
count( company_name ) AS news_num
FROM
(
SELECT
t1.user_id AS user_id,
t1.case_id AS case_id,
split_part ( t2.monitor_words_company, '#;#', 1 ) AS company_name,
website_name AS website_name,
CURRENT_DATE AS daily_date
FROM
service.eoias_sentiment_analysis_result t1
JOIN service.eoias_crawler_key_param t2 ON t1.case_id = cast( t2.id AS text )
WHERE
t1.release_time >= to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss' ) + '-1 day'
AND t1.release_time <= to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss' ) and t1.user_id = t2.user_id and t1.case_id = cast( t2.id AS text )
) c1
GROUP BY
c1.user_id,
company_name) d2
on d1.user_id = d2.user_id and d1.company_name = d2.company_name) e1 where row_num <=2
),
tmp2 as (
SELECT
user_id,
company_name,
count( company_name ) AS news_num
FROM
(
SELECT
t1.user_id AS user_id,
t1.case_id AS case_id,
split_part ( t2.monitor_words_company, '#;#', 1 ) AS company_name,
website_name AS website_name,
CURRENT_DATE AS daily_date
FROM
service.eoias_sentiment_analysis_result t1
JOIN service.eoias_crawler_key_param t2 ON t1.case_id = cast( t2.id AS text )
WHERE
t1.release_time >= to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss' ) + '-1 day'
AND t1.release_time <= to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss' ) and t1.user_id = t2.user_id and t1.case_id = cast( t2.id AS text )
) c1
GROUP BY
c1.user_id,
company_name
),
tmp3 as (
select user_id,company_name,sentiment_top1,sentiment_top1_num,sentiment_top1_ratio from (
SELECT
c1.user_id,
c1.company_name,
c1.text_sentiment as sentiment_top1,
c1.sentiment_top as sentiment_top1_num,
round(100 * c1.sentiment_top / c2.news_num, 2) as sentiment_top1_ratio,
row_number() over (partition by c1.user_id, c1.company_name) as rown
FROM
(
SELECT
t1.user_id,
split_part ( t2.monitor_words_company, '#;#', 1 ) AS company_name,
t1.text_sentiment,
count( 1 ) AS sentiment_top
FROM
service.eoias_sentiment_analysis_result t1
JOIN service.eoias_crawler_key_param t2 ON t1.case_id = cast( t2.id AS text )
WHERE
t1.release_time >= to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss' ) + '-1 day'
AND t1.release_time <= to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss' )
GROUP BY
t1.user_id,
company_name,
text_sentiment
) c1
JOIN (
SELECT
user_id,
company_name,
count( company_name ) AS news_num
FROM
(
SELECT
t1.user_id AS user_id,
t1.case_id AS case_id,
split_part ( t2.monitor_words_company, '#;#', 1 ) AS company_name,
website_name AS website_name,
CURRENT_DATE AS daily_date
FROM
service.eoias_sentiment_analysis_result t1
JOIN service.eoias_crawler_key_param t2 ON t1.case_id = cast( t2.id AS text )
WHERE
t1.release_time >= to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss' ) + '-1 day'
AND t1.release_time <= to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss' )
AND t1.user_id = t2.user_id
AND t1.case_id = cast( t2.id AS text )
) c1
GROUP BY
c1.user_id,
company_name
) c2 ON c1.user_id = c2.user_id
AND c1.company_name = c2.company_name) d1 where rown = '1'
)
insert into daily.eoias_daily_abstract(user_id,case_id,daily_date,company_name,news_num,source_top1,source_top1_num,source_top1_ratio,source_top2,source_top2_num,source_top2_ratio,sentiment_top1,sentiment_top1_num,sentiment_top1_ratio)
select
c.user_id,
c.case_id,
to_char(now()::timestamp,'YYYYmmdd') as daily_date,
c.company_name,
tmp2.news_num,
tmp1.source_top1,
tmp1.source_top1_num,
tmp1.source_top1_ratio,
tmp1.source_top2,
tmp1.source_top2_num,
tmp1.source_top2_ratio,
tmp3.sentiment_top1,
tmp3.sentiment_top1_num,
tmp3.sentiment_top1_ratio
from (
SELECT
a.user_id,
a.case_id,
split_part ( b.monitor_words_company, '#;#', 1 ) AS company_name
FROM
service.eoias_sentiment_analysis_result a
JOIN service.eoias_crawler_key_param b ON a.case_id = cast( b.id AS text )
WHERE
a.release_time >= to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss' ) + '-1 day'
AND a.release_time <= to_timestamp ( CURRENT_DATE || ' ' || '07:00:00', 'yyyy-MM-dd hh24:mi:ss')) c
join (select
a.user_id,
a.company_name,
a.website_name as source_top1,
a.source_top as source_top1_num,
a.ratio as source_top1_ratio,
case when b.website_name is null then '' else b.website_name end source_top2,
case when b.source_top is null then 0 else b.source_top end source_top2_num,
case when b.ratio is null then 0 else b.ratio end source_top2_ratio
from
(select user_id, company_name, website_name, ratio, source_top from tmp where row_num = 1) a
left join
(select user_id, company_name, website_name, ratio, source_top from tmp where row_num = 2) b
on a.company_name = b.company_name and a.user_id = b.user_id) tmp1 on c.user_id = tmp1.user_id and c.company_name = tmp1.company_name
join tmp2 on c.user_id = tmp2.user_id and c.company_name = tmp2.company_name
join tmp3 on c.user_id = tmp3.user_id and c.company_name = tmp3.company_name;