| --! qt:dataset:src |
| set hive.map.aggr=false; |
| set hive.groupby.skewindata=true; |
| |
| -- SORT_QUERY_RESULTS |
| |
| CREATE TABLE DEST1_n71(key INT, value STRING) STORED AS TEXTFILE; |
| CREATE TABLE DEST2_n15(key INT, value STRING) STORED AS TEXTFILE; |
| |
| EXPLAIN |
| FROM SRC |
| INSERT OVERWRITE TABLE DEST1_n71 SELECT SRC.key, COUNT(DISTINCT SUBSTR(SRC.value,5)) GROUP BY SRC.key |
| INSERT OVERWRITE TABLE DEST2_n15 SELECT SRC.key, COUNT(DISTINCT SUBSTR(SRC.value,5)) GROUP BY SRC.key; |
| |
| FROM SRC |
| INSERT OVERWRITE TABLE DEST1_n71 SELECT SRC.key, COUNT(DISTINCT SUBSTR(SRC.value,5)) GROUP BY SRC.key |
| INSERT OVERWRITE TABLE DEST2_n15 SELECT SRC.key, COUNT(DISTINCT SUBSTR(SRC.value,5)) GROUP BY SRC.key; |
| |
| SELECT DEST1_n71.* FROM DEST1_n71; |
| SELECT DEST2_n15.* FROM DEST2_n15; |
| |
| set hive.multigroupby.singlereducer=false; |
| |
| EXPLAIN |
| FROM SRC |
| INSERT OVERWRITE TABLE DEST1_n71 SELECT SRC.key, COUNT(DISTINCT SUBSTR(SRC.value,5)) GROUP BY SRC.key |
| INSERT OVERWRITE TABLE DEST2_n15 SELECT SRC.key, COUNT(DISTINCT SUBSTR(SRC.value,5)) GROUP BY SRC.key; |
| |
| FROM SRC |
| INSERT OVERWRITE TABLE DEST1_n71 SELECT SRC.key, COUNT(DISTINCT SUBSTR(SRC.value,5)) GROUP BY SRC.key |
| INSERT OVERWRITE TABLE DEST2_n15 SELECT SRC.key, COUNT(DISTINCT SUBSTR(SRC.value,5)) GROUP BY SRC.key; |
| |
| SELECT DEST1_n71.* FROM DEST1_n71; |
| SELECT DEST2_n15.* FROM DEST2_n15; |