![](/img/trans.png)
[英]How do I count the number of times an item appears in a column in a datatable in c#
[英]How do I count how many time an item exist in a column?
select c.candidateId, c.candidatename,
count(sc.candidate_tbl_candidateId) as vote_count
from candidate_tbl c
left join student_tbl_has_candidate_tbl sc on sc.candidate_tbl_candidateId = c.candidateId
group by c.candidateId, c.candidatename
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.