SELECT avg(temp01.staff_age) AS "avg_age" FROM (SELECT person.age AS "staff_age" FROM /univ_demo_local/person person WHERE person.status = '在职' LIMIT 0, 500000) temp01 LIMIT 0, 500000 WITH TIMEOUT = 6m
/**
output()
matchcount("avg_age", 44.2047~44.205, 1)
**/
;