如何使用Hive QL生成序列号

Question

How to write the hive sql to get the table B from table A (without any UDF) ?

table A

PLATFORM    USER_ID CLICK_TIME  CLICK_URL

WEB 12332321 2013-03-21 13:48:31.324 /home/

WEB 12332321 2013-03-21 13:48:32.954 /selectcat/er/

WEB 12332321 2013-03-21 13:48:46.365 /er/viewad/12.html

WEB 12332321 2013-03-21 13:48:53.651 /er/viewad/13.html

WEB 12332321 2013-03-21 13:49:13.435 /er/viewad/24.html

WEB 12332321 2013-03-21 13:49:35.876 /selectcat/che/

WEB 12332321 2013-03-21 13:49:56.398 /che/viewad/93.html

WEB 12332321 2013-03-21 13:50:03.143 /che/viewad/10.html

WEB 12332321 2013-03-21 13:50:34.265 /home/

WAP 32483923 2013-03-21 23:58:41.123 /m/home/

WAP 32483923 2013-03-21 23:59:16.123 /m/selectcat/fang/

WAP 32483923 2013-03-21 23:59:45.123 /m/fang/33.html ......

table B

PLATFORM USER_ID SEQ FROM_URL TO_URL

WEB 12332321 1 NULL /home/

WEB 12332321 2 /home/ /selectcat/er/

WEB 12332321 3 /selectcat/er/ /er/viewad/12.html

WEB 12332321 4 /er/viewad/12.html /er/viewad/13.html

WEB 12332321 5 /er/viewad/13.html /er/viewad/24.html

WEB 12332321 6 /er/viewad/24.html /selectcat/che/

WEB 12332321 7 /selectcat/che/ /che/viewad/93.html

WEB 12332321 8 /che/viewad/93.html /che/viewad/10.html

WEB 12332321 9 /che/viewad/10.html /home/

WAP 32483923 1 NULL /m/home/

WAP 32483923 2 /m/home/ /m/selectcat/fang/

WAP 32483923 3 /m/selectcat/fang/ /m/fang/33.html

WAP 32483923 4 /m/fang/33.html /m/fang/54.html

Answer 1

Rank() without UDF is impossible for now. You can use PIG or use pseudo UDF. Here is similar post ( source ). GL!