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

--! qt:dataset:src1
--! qt:dataset:src
set hive.mapred.mode=nonstrict;

set hive.cli.print.header=true;

  SELECT src1.key as k1, src1.value as v1, 
         src2.key as k2, src2.value as v2
    FROM (SELECT * FROM src WHERE src.key < 10) src1 
    JOIN (SELECT * FROM src WHERE src.key < 10) src2
ORDER BY k1, v1, k2, v2
   LIMIT 10;

SELECT src.key, sum(substr(src.value,5)) FROM src GROUP BY src.key ORDER BY src.key LIMIT 10;

use default;