select count(*) ,t.warehouse , DATE_FORMAT(t.shipped_date, '%Y-%m-%d') shipped_date from
(
select order_no,warehouse,shipped_date,rowstate from customer_order_tab
union all
select order_no,warehouse,shipped_date,rowstate from customer_order_arc_tab
) t
where t.rowstate in ('Delivered','Returned')
group by t.warehouse,DATE_FORMAT(t.shipped_date, '%Y-%m-%d')
order by t.shipped_date asc
Mysql 多表合并统计
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转载自my.oschina.net/u/3556610/blog/1816528
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