sql - 我想得到几个范围之间的 count(*) 总和

Question

我想得到count(*)几个范围之间的总和。

例如，我select count(*)从一个位置范围到另一个位置范围有 10 条语句。

我想得到所有 10 个位置范围的总和。

SELECT count (*) 
FROM locn_hdr 
WHERE locn_brcd 
BETWEEN 'B2121' AND 'B2144'

SELECT count (*) 
FROM locn_hdr 
WHERE locn_brcd 
BETWEEN 'B2201' AND 'B2224' 

Answer 1

如果您想要单独的结果，您可以使用以下查询：

select sum(if(locn_brcd between 'B2121' and 'B2144',1,0)) as ca1, 
    sum(if(locn_brcd between 'B2201' and 'B2224',1,0)) as ca2,
    sum(if(locn_brcd between 'B2322' and 'B2344',1,0)) as ca3,
    sum(if(locn_brcd between 'B2401' and 'B2424',1,0)) as ca4,
    sum(if(locn_brcd between 'B2521' and 'B2544',1,0)) as ca5,
    sum(if(locn_brcd between 'B2601' and 'B2624',1,0)) as ca6,
    sum(if(locn_brcd between 'B0317' and 'B0340',1,0)) as ca7,
    sum(if(locn_brcd between 'B0401' and 'B0424',1,0)) as ca8,
    sum(if(locn_brcd between 'B0517' and 'B0540',1,0)) as ca9,
    sum(if(locn_brcd between 'B0601' and 'B0624',1,0)) as ca10
from locn_hd;

Answer 2

在 mysql 中试试这个查询：

select (sum(if(locn_brcd between 'B2121' and 'B2144',1,0))+sum(if(locn_brcd between 'B2201' and 'B2224',1,0))) as total from locn_hdr