sql-统计某个区间

合同表contract，查询某年合同金额区间数量(区间内没值时数量为0)

select
sum(case when scope='15万以下' then 1 else 0 end) as 15万以下,
sum(case when scope='15至100万' then 1 else 0 end) as 15至100万,
sum(case when scope='100至500万' then 1 else 0 end) as 100至500万,
sum(case when scope='500万以上' then 1 else 0 end) as 500万以上
from 
(
SELECT
            con.contractMoney,
            CASE
        WHEN contractMoney < 15 THEN
            '15万以下'
        WHEN contractMoney BETWEEN 15
        AND 100 THEN
            '15至100万'
        WHEN contractMoney BETWEEN 100
        AND 500 THEN
            '100至500万'
        ELSE
            '500万以上'
        END AS scope
        FROM
            t_contract con
        WHERE
            con.isAvailable =1
        AND YEAR (con.contractDate) =2017
)
t1

显示结果为：