如何计数并创建这些计数的总和

Question

我需要帮助构建我的查询来计算系统类型ID的计数。

例子：

SystemTypeID Description   Acronym 
1    System1 description ABC 
2    System2 description DEF 
3    System3 description XYZ 

我期待构建这样的事情：

Count SystemTypeID Description   Acronym 
21  1    System1 description ABC 
100 2    System2 description DEF 
67  3    System3 description XYZ 

到目前为止，我知道该怎么做了不同的，但我正在寻找数数然后将其分组：

select distinct(a.SystemTypeID), 
     b.Description, 
     b.Acronym 
from operations.Systems a, 
    operations.SystemTypes b 
where a.SystemTypeID=b.SystemTypeID 
order by a.SystemType_ID; 

Answer 1

而不是DISTINCT， ED是COUNT和GROUP BY

SELECT COUNT(a.SystemTypeID) AS `Count`, 
     a.SystemTypeID, 
     b.Description, 
     b.Acronym 
FROM operations.Systems a, 
    operations.SystemTypes b 
WHERE a.SystemTypeID = b.SystemTypeID 
GROUP BY a.SystemTypeID, 
     b.Description, 
     b.Acronym 
ORDER BY a.SystemType_ID;