odbtools/odbctest/mql/uino72/994.null.mql

select id,staff_from,lx_date from
/univ_demo/person WHERE age <= 45 
AND (person_sort = '事业编' OR staff_type = '校聘合同制人员') 
AND (
    staff_from != '本校师资博士后出站' 
    AND 
    lx_date >= '2025-01-01 00:00:00'
    )
/**
output()
count(15)
**/
;

select id,staff_from,lx_date from
/univ_demo/person WHERE age <= 45 
AND (person_sort = '事业编' OR staff_type = '校聘合同制人员') 
AND (
    staff_from is null
    AND 
    lx_date >= '2025-01-01 00:00:00'
    )
/**
output()
count(1)
**/
;