| --! qt:dataset:src |
| set hive.map.aggr=true; |
| set hive.groupby.skewindata=true; |
| set mapred.reduce.tasks=31; |
| |
| -- SORT_QUERY_RESULTS |
| |
| CREATE TABLE DEST1_n21(key INT, value STRING) STORED AS TEXTFILE; |
| CREATE TABLE DEST2_n5(key INT, value STRING) STORED AS TEXTFILE; |
| |
| SET hive.exec.compress.intermediate=true; |
| SET hive.exec.compress.output=true; |
| |
| EXPLAIN |
| FROM SRC |
| INSERT OVERWRITE TABLE DEST1_n21 SELECT SRC.key, sum(SUBSTR(SRC.value,5)) GROUP BY SRC.key |
| INSERT OVERWRITE TABLE DEST2_n5 SELECT SRC.key, sum(SUBSTR(SRC.value,5)) GROUP BY SRC.key; |
| |
| FROM SRC |
| INSERT OVERWRITE TABLE DEST1_n21 SELECT SRC.key, sum(SUBSTR(SRC.value,5)) GROUP BY SRC.key |
| INSERT OVERWRITE TABLE DEST2_n5 SELECT SRC.key, sum(SUBSTR(SRC.value,5)) GROUP BY SRC.key; |
| |
| SELECT DEST1_n21.* FROM DEST1_n21; |
| SELECT DEST2_n5.* FROM DEST2_n5; |
