参考：https://blog.csdn.net/liubl2011/article/details/84079478
select (extract(epoch from cast(t.pgtime as timestamp))-extract(epoch from cast(t.inserttime as timestamp)))/60 as ddd from table_base t -- 实体表 where (extract(epoch from cast(t.pgtime as timestamp))-extract(epoch from cast(t.inserttime as timestamp)))/60 > 120 -- pgtime大于inserttime 120分钟 limit 100;