ql/src/test/queries/clientpositive/groupby10.q

set hive.map.aggr=false;
set hive.multigroupby.singlereducer=false;
set hive.groupby.skewindata=true;

-- SORT_QUERY_RESULTS

CREATE TABLE dest1_n0(key INT, val1 INT, val2 INT);
CREATE TABLE dest2(key INT, val1 INT, val2 INT);

CREATE TABLE INPUT(key INT, value STRING) STORED AS TEXTFILE;
LOAD DATA LOCAL INPATH '../../data/files/kv5.txt' INTO TABLE INPUT;

EXPLAIN
FROM INPUT 
INSERT OVERWRITE TABLE dest1_n0 SELECT INPUT.key, count(substr(INPUT.value,5)), count(distinct substr(INPUT.value,5)) GROUP BY INPUT.key
INSERT OVERWRITE TABLE dest2 SELECT INPUT.key, sum(substr(INPUT.value,5)), sum(distinct substr(INPUT.value,5))   GROUP BY INPUT.key;

FROM INPUT
INSERT OVERWRITE TABLE dest1_n0 SELECT INPUT.key, count(substr(INPUT.value,5)), count(distinct substr(INPUT.value,5)) GROUP BY INPUT.key
INSERT OVERWRITE TABLE dest2 SELECT INPUT.key, sum(substr(INPUT.value,5)), sum(distinct substr(INPUT.value,5))   GROUP BY INPUT.key;

SELECT * from dest1_n0;
SELECT * from dest2;

set hive.multigroupby.singlereducer=true;

EXPLAIN
FROM INPUT 
INSERT OVERWRITE TABLE dest1_n0 SELECT INPUT.key, count(substr(INPUT.value,5)), count(distinct substr(INPUT.value,5)) GROUP BY INPUT.key
INSERT OVERWRITE TABLE dest2 SELECT INPUT.key, sum(substr(INPUT.value,5)), sum(distinct substr(INPUT.value,5))   GROUP BY INPUT.key;

FROM INPUT
INSERT OVERWRITE TABLE dest1_n0 SELECT INPUT.key, count(substr(INPUT.value,5)), count(distinct substr(INPUT.value,5)) GROUP BY INPUT.key
INSERT OVERWRITE TABLE dest2 SELECT INPUT.key, sum(substr(INPUT.value,5)), sum(distinct substr(INPUT.value,5))   GROUP BY INPUT.key;

SELECT * from dest1_n0;
SELECT * from dest2;

set hive.groupby.skewindata=false;
-- HIVE-3852 Multi-groupby optimization fails when same distinct column is used twice or more

EXPLAIN
FROM INPUT
INSERT OVERWRITE TABLE dest1_n0 SELECT INPUT.key, sum(distinct substr(INPUT.value,5)), count(distinct substr(INPUT.value,5)) GROUP BY INPUT.key
INSERT OVERWRITE TABLE dest2 SELECT INPUT.key, sum(distinct substr(INPUT.value,5)), avg(distinct substr(INPUT.value,5)) GROUP BY INPUT.key;

FROM INPUT
INSERT OVERWRITE TABLE dest1_n0 SELECT INPUT.key, sum(distinct substr(INPUT.value,5)), count(distinct substr(INPUT.value,5)) GROUP BY INPUT.key
INSERT OVERWRITE TABLE dest2 SELECT INPUT.key, sum(distinct substr(INPUT.value,5)), avg(distinct substr(INPUT.value,5)) GROUP BY INPUT.key;

SELECT * from dest1_n0;
SELECT * from dest2;