✅ add a case

Author: bebee4java

cases/站点访问量周榜top10.sql

@@ -0,0 +1,63 @@
+/*
+需求:
+要求统计一周内每日访问量pv最高的站点
+数据如下:
+day,website,pv
+2019-10-01,www.blogtech.top,13
+2019-10-01,www.sqlfun.cn,10
+2019-10-01,www.sqlpower.top,9
+2019-10-01,www.sqlpower.tech,15
+2019-10-02,www.blogtech.top,13
+2019-10-02,www.sqlfun.cn,9
+2019-10-02,www.sqlpower.top,9
+2019-10-03,www.sqlpower.tech,15
+2019-10-04,www.blogtech.top,13
+2019-10-04,www.sqlfun.cn,9
+2019-10-05,www.sqlpower.top,9
+2019-10-06,www.sqlpower.tech,15
+2019-10-07,www.blogtech.top,13
+2019-10-07,www.sqlfun.cn,10
+*/
+
+-- 1. 建表
+set hive.exec.mode.local.auto=true;   --开启Hive的本地模式
+
+drop table if exists user_website_pv;
+create temporary table user_website_pv(
+  day string,
+  website string,
+  pv int
+) row format delimited fields terminated by ','
+stored as textfile
+tblproperties(
+  "skip.header.line.count"="1"  --跳过文件首的1行
+  --"skip.footer.line.count"="n"  --跳过文件尾的n行
+);
+
+load data local inpath '/tmp/sgr/user_website_pv.csv' into table user_website_pv;
+
+-- 2. 处理
+
+select a.day,a.website,a.sum_pv from (
+  select  day,website,sum(pv) as sum_pv,
+  row_number() over(partition by day order by sum(pv) desc) rank
+   from user_website_pv where day
+  BETWEEN date_sub('2019-10-07', 7) and '2019-10-07'
+  group by day,website
+) a where a.rank=1;
+
+
+/*
+结果:
+2019-10-01	www.sqlpower.tech	15
+2019-10-02	www.blogtech.top	13
+2019-10-03	www.sqlpower.tech	15
+2019-10-04	www.blogtech.top	13
+2019-10-05	www.sqlpower.top	9
+2019-10-06	www.sqlpower.tech	15
+2019-10-07	www.blogtech.top	13
+*/
+
+
+
+