多个带有时间戳的表的左连接

尝试:

select distinct person_info.person_name
     t2.value,
     t3.value,
     t4.value,
     t5.value
from person_info
    left join (select t.*, row_number() over (partition by person_name order by timestamp_column desc) rowno from table2 t) t2 
         on t2.person_name=person_info.person_name and t2.rowno=1
    left join (select t.*, row_number() over (partition by person_name order by timestamp_column desc) rowno from table3 t) t3
         on t3.person_name=person_info.person_name and t3.rowno=1
    left join (select t.*, row_number() over (partition by person_name order by timestamp_column desc) rowno from table4 t) t4
         on t4.person_name=person_info.person_name and t4.rowno=1
    left join (select t.*, row_number() over (partition by person_name order by timestamp_column desc) rowno from table5 t) t5
         on t5.person_name=person_info.person_name and t5.rowno=1;