向列添加计数功能

Question

我正在尝试在dv.severity列名称的单独列中添加计数功能。该列包括严重性的输出：中度和严重。以下是我当前的查询。

SELECT ds.name AS site, date_published, dv.severity, dv.title AS vulnerability_title
FROM fact_asset_vulnerability_finding favf, dv.severity
   JOIN dim_asset da USING (asset_id) 
   JOIN dim_operating_system dos USING (operating_system_id) 
   JOIN dim_vulnerability dv USING (vulnerability_id) 
   JOIN dim_site_asset dsa USING (asset_id) 
   JOIN dim_site ds USING (site_id) 
WHERE now() - date_published < INTERVAL '180 days'
ORDER BY dv.title ASC

以下是我的输出中的摘录

+ --------+----------------+----------+-----------------------------------------------------------------+
| site    | date_published | severity | vulnarability_title                                             |
+ --------+----------------+----------+-----------------------------------------------------------------+
| MEAS-de | 1/30/2018      | Severe   | 7-Zip: CVE-2017-17969: Heap based buffer overflow vulnarability |
+ --------+----------------+----------+-----------------------------------------------------------------+

现在的结果：4列；网站，发布日期，严重性，漏洞标题

结果我想要5列；网站，发布日期，严重性，严重性计数，漏洞标题

Answer 1

建议：以下是我的输出中的摘录

立即获得结果： 4列；网站，发布日期，严重性，漏洞标题

我想要的结果 5列网站，发布日期，严重性，严重性计数，漏洞标题

Answer 2

FROM fact_asset_vulnerability_finding favf，dv.severity ---不是错字。

Answer 3

我计算出计数。我需要添加以下内容：count（dv.severity）和GROUP BY网站，date_published，严重性，脆弱性标题。这使我能够拥有计数功能。