Question

我想在语句中汇总null，这样它只会返回一个记录，它目前正在返回6条记录，每年一条记录。我希望id每年只返回一次结果。

sed -e '/pattern/N;y/\n/\t/'

Answer 1

没有数据很难分辨，但我想你想从分组中删除SOURCE_CODE和CATEGORY（即只是按a.id分组），并在每个case语句周围添加MAX（...）。

作为旁边''是一个空字符串，而不是NULL。

编辑：为查询的黑客攻击版本创建了一些测试数据（即删除不相关的字段，并为了清晰起见缩短为3年）以显示我的意思：

create table #basic (
    ID nvarchar(7),
    CURRENT_COUNTY nvarchar(2) 
)

insert into #basic values('1003986','37')

create table #activity (
    ID nvarchar(7),
    SOURCE_CODE nvarchar(4),
    CATEGORY nvarchar(3)
);

insert into #activity (ID, SOURCE_CODE, CATEGORY) values('1003986', '2012','PC');
insert into #activity (ID, SOURCE_CODE, CATEGORY) values('1003986', '2014','PCG');

DECLARE @county nvarchar(2) = '37'

SELECT 
    A.ID,

    MAX(CASE
        when a.SOURCE_CODE='2012'and a.category='PC' then 'Presidents Club' 
        when a.SOURCE_CODE='2012'and a.category='PCG' then 'Presidents Club Gold' 
        when a.SOURCE_CODE='2012'and a.category='PCS' then 'Presidents Club Silver'
        else ''
    END) AS '2012',

    MAX(CASE
        when a.SOURCE_CODE='2013'and a.category='PC' then 'Presidents Club' 
        when a.SOURCE_CODE='2013'and a.category='PCB' then 'Presidents Club Broze' 
        when a.SOURCE_CODE='2013'and a.category='PCG' then 'Presidents Club Gold' 
        when a.SOURCE_CODE='2013'and a.category='PCS' 
        then 'Presidents Club Silver'
        else ''
    END) AS '2013',

    MAX(CASE
        when a.SOURCE_CODE='2014'and a.category='PC' then 'Presidents Club' 
        when a.SOURCE_CODE='2014'and a.category='PCB' then 'Presidents Club Broze' 
        when a.SOURCE_CODE='2014'and a.category='PCG' then 'Presidents Club Gold' 
        when a.SOURCE_CODE='2014'and a.category='PCS' then 'Presidents Club silver'
        else ''
    END) AS '2014'

FROM #basic AS b
    INNER JOIN #Activity AS a ON b.ID = a.ID
WHERE
     b.CURRENT_COUNTY = @county
    AND A.ID = '1003986'
    AND CATEGORY in ('PC','PCB','PCG','PCP','PCS')
GROUP BY  a.id

返回

ID----- 2012----------- 2013--- 2014----------------
1003986 Presidents Club         Presidents Club Gold

Answer 2

从这个应该起作用的查询开始：

SELECT a.id, a.SOURCE_CODE, a.CATEGORY, COUNT(*)
FROM basic b INNER JOIN
     Activity a
     ON b.ID = a.ID
WHERE a.UF_3  In ('N', 'R') AND
      a.UF_2 = 'v' AND
      a.ACTION_CODES = 'A' AND
      b.CURRENT_COUNTY = @county AND
      PRODUCT_CODE = 'CHAPT/37'
      A.ID = '1003986'
      CATEGORY in ('PC', 'PCB', 'PCG', 'PCP', 'PCS')
GROUP BY a.id, a.SOURCE_CODE, a.CATEGORY
ORDER BY a.id, a.SOURCE_CODE;

这会将类别和源代码放在不同的行上。这可能足以满足您的目的。

使用案例陈述汇总记录

2 个答案: