SQL：将表中的列添加到另一个

Question

我有两个表来计算记录并按月显示计数。

我想在同一张桌子上显示两个计数，但我不确定如何将它们合并。

我只想添加＆＃34; IM Count＆＃34;列到第一个表，右边是＆＃34; CR计数。＆＃34;

下面是第一个表的代码。第二个表是类似的代码，但它从另一个表中绘制数据。我的主要问题是我没有表格之间匹配的列。 （“年”和“月”列在技术上匹配，但仅仅因为它们都是每月的计数。）

Use sm

select 
year(planned_start) Year, 

Case
    When month(planned_start) = 1 then 'January'
    When month(planned_start) = 2 then 'February'
    When month(planned_start) = 3 then 'March'
    When month(planned_start) = 4 then 'April'
    When month(planned_start) = 5 then 'May'
    When month(planned_start) = 6 then 'June'
    When month(planned_start) = 7 then 'July'
    When month(planned_start) = 8 then 'August'
    When month(planned_start) = 9 then 'September'
    When month(planned_start) = 10 then 'October'
    When month(planned_start) = 11 then 'November'
    When month(planned_start) = 12 then 'December'
end as Month,
count(*) 'CR Count'

from dbo.cm3rm1
where planned_start between dateadd(Year,-1,getdate()) and getdate()
and
    category !='OAS Normal'
group by year(planned_start), month(planned_start)
order by year(planned_start), month(planned_start)

Answer 1

嗯，对于＆＃34;的想法＆＃34; ：

SELECT tmp_CR.Year, 
Case 
 When tmp_CR.month = 1 then 'January'
 When tmp_CR.month = 2 then 'February'
 When tmp_CR.month = 3 then 'March'
 When tmp_CR.month = 4 then 'April'
 When tmp_CR.month = 5 then 'May'
 When tmp_CR.month = 6 then 'June'
 When tmp_CR.month = 7 then 'July'
 When tmp_CR.month = 8 then 'August' 
 When tmp_CR.month = 9 then 'September'
 When tmp_CR.month = 10 then 'October'
 When tmp_CR.month = 11 then 'November'
 When tmp_CR.month = 12 then 'December' end as month, 
 tmp_CR.CR_Count, 
 tmp_IM.IM_Count
FROM (
 select 
  year(planned_start) Year, 
  month(planned_start) as Month,
  count(*) as CR_Count
 from dbo.TABLE_1
 where planned_start between dateadd(Year,-1,getdate()) and getdate()
   and
    category !='OAS Normal'
 group by year(planned_start), month(planned_start) 
) tmp_CR
INNER JOIN (
 select 
  year(planned_start) Year, 
  month(planned_start) as Month, as Month,
  count(*) as IM_Count
 from dbo.TABLE_2
 where planned_start between dateadd(Year,-1,getdate()) and getdate()
   and
    category !='OAS Normal'
 group by year(planned_start), month(planned_start) 
) tmp_IM ON tmp_CR.year = tmp_IM.year and tmp_CR.month = tmp_IM.month
ORDER BY tmp_CR.Year, tmp_CR.month