-- case2 ----========== click_log ==========--/*11 ad_101 2014-05-01 06:01:12.334+0122 ad_102 2014-05-01 07:28:12.342+0133 ad_103 2014-05-01 07:50:12.33+0111 ad_104 2014-05-01 09:27:12.33+0122 ad_103 2014-05-01 09:03:12.324+0133 ad_ 102 2014-05-02 19:10:12.343+0111 ad_101 2014-05-02 09:07:12.344+0135 ad_105 2014-05-03 11:07:12.339+0122 ad_104 2014-05-03 12:59:12.743+0177 ad_103 2014-05-03 18:04:12.355+0199 ad_ 102 2014-05-04 00:36:39.713+0133 ad_101 2014-05-04 19:10:12.343+ 0111 ad_101 2014-05-05 09:07:12.344+0135 ad_102 2014-05-05 11:07:12.339+0122 ad_103 2014-05-05 12:59:12.743+0177 ad_104 2014-05-05 18:04:12.355+0199 ad_105 2014-05-05 20:36:39.713+01*/create external table click_log ( cookie_id STRING , ad_id STRING , ts string) row format delimited fields terminated by ' \ t ' location '/tmp/db_case2/click_log '; Select cookie_id, collect_set (AD _ID) as ordersfrom click_log--where ts > ' 2014-05-02 ' Group by cookie_id;select cookie_id, group_ Concat (ad_id, ' | ') as ordersfrom click_log--where ts > ' 2014-05-02 ' group by cookie_id ;--========== ad_list ==========--/*ad_101 http://abcn.net/ catalog8|catalog1ad_102 http://www.abcn.net/ catalog6| catalog3ad_103 http://fxlive.de/ catalog7ad_104 http://fxlive.fr/ catalog5|catalog1|catalog4|catalog9ad_105 http://fxlive.eu/ */CREATE EXTERNAL TABLE ad_list ( ad_id STRING , url STRING , catalogs array<STRING>) Row format delimitedfields terminated BY ' t ' collection items terminated by ' | location '/tmp/db_case2/ad_list '; create external table ad_list_string ( ad_id string , url string , catalogs string) ROW format delimited fields terminated by ' \ t ' location '/tmp/db_case2/ad_list '; select click.cookie_id, click.ad_id, click.amount, ad_list_string.catalogs as ordersfrom ( select cookie_id, ad_id, count (1) as amount from click_log group by cookie_id, ad_id) clickjoin ad_list_stringon (ad_ LIST_STRING.AD_ID&NBSP;=&NBSP;CLICK.AD_ID); select ad_id, catalog from ad_list lateral view outer explode (catalogs) t as catalog;select ad_id, collect_set ( Catalog) from ad_lisT lateral view outer explode (catalogs) t as catalog group by ad_id;select click.cookie_id, ad.catalog from click_log clickleft outer join ( select ad_id, catalog from ad_list lateral view outer explode (catalogs) t as catalog) adon (click.ad_id = ad.ad_ ID); Create table cookie_cats asselect click.cookie_id, ad.catalog, count (1) as weight from click_log clickleft outer join ( select ad_id, catalog from ad_list lateral view outer explode (Catalogs) t as catalog) adon (click.ad_id = ad.ad_id) Group by click.cookie _id, ad.catalogorder by cookie_id, weight desc;select cookie_id, collect_ Set (catalog) from cookie_cats group by cookie_id; -- where catalog is not nullselect Cookie_id, group_concat (catalog, ' | ') from cookie_cats group by cookie_id; -- impala group_concat
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