mysql 小程序

select
count(*)  totalNum,ifcol
from
(select
if(last_updated_stamp >= '2014-10-10' and last_updated_stamp < '2015-11-17', '今天',
if(last_updated_stamp >= '2015-11-17' and last_updated_stamp < '2015-12-01', '昨天',
if(last_updated_stamp >= '2015-12-01' and last_updated_stamp < now(), '前天', 'error')
)
) ifcol
from
order_header) res  group by res.ifcol;

select * from ((select count(*) pv,count(distinct vt.client_ip_address) uvfrom server_hit st left join visit vt on st.visit_id=vt.visit_id) res1 ,(select count(*) pv1,count(distinct vt.client_ip_address) uv1from server_hit st left join visit vt on st.visit_id=vt.visit_idwhere vt.user_login_id is not null) res2);

(selectproduct_name, pv1, uv1, @t1:=0 ttfrom(select count(seq_num_id) pv1, count(distinct client_ip_address) uv1 from traffic_detail) tt0,(select p0.product_name from(select hit_product_id, count(seq_num_id) as totalpvnum, max(hit_date) as maxDatefrom traffic_detail group by hit_product_id) t0left join product p0 ON p0.product_id = t0.hit_product_idorder by t0.totalpvnum desc , t0.maxDate desc limit 1) tt1)union all(selectp1.product_name ,t1.totalpvnum pv1,t1.totaluvnum uv1,@t2:=1 ttfrom(select hit_product_id,count(seq_num_id) as totalpvnum,count(distinct client_ip_address) as totaluvnum,max(hit_date) as maxDatefrom traffic_detail group by hit_product_id order by totalpvnum desc) t1left join product p1 ON p1.product_id = t1.hit_product_idorder by t1.totalpvnum ASC , t1.maxDate desc);