sqlcase子查询

㈠ SQL子查询统计

select
count(distinct(b.visit_id))'visit_id次数',

count(case when typeid=14 then 1 else 0)'14出现次数',
count(case when typeid=65 then 1 else 0)'65出现次数' from a
inner join b on a.visit_id=b.visitId

㈡ SQL子查询

select 用户名 ,所处大区, 所处省区,
sum(onty_cnt) as onty_cnt,sum(offty_cnt) as offty_cnt,
sum(overtime) as overtime
from
(select 用户名 ,所处大区, 所处省区, onty_time ,offty_time, 打卡日期,overtime,
case when to_char(onty_time,'hh24:mi') > '09:00' then 1 else 0 end as onty_cnt,
case when to_char(offty_time,'hh24:mi') < '17:20' then 1 else 0 end as offty_cnt
where 省区 = 参数
and 打卡日期 between '2009-01-01' and '2009-01-31' )
group by 用户名 ,所处大区, 所处省区

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这是按人统计， 如果不要每个人的， 只要全部， 那就：

select 所处大区, 所处省区,
sum(onty_cnt) as onty_cnt,sum(offty_cnt) as offty_cnt,
sum(overtime) as overtime
from
(select 用户名 ,所处大区, 所处省区, onty_time ,offty_time, 打卡日期,overtime,
case when to_char(onty_time,'hh24:mi') > '09:00' then 1 else 0 end as onty_cnt,
case when to_char(offty_time,'hh24:mi') < '17:20' then 1 else 0 end as offty_cnt
where 省区 = 参数
and 打卡日期 between '2009-01-01' and '2009-01-31' )
group by 所处大区, 所处省区

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就是从外面的查询中把用户名去掉！
不明白HI我