显示月份和每月收到的报价数量

Question

显示月份和每个月收到的报价。 我使用了此查询，但最终输出与我的输出不同。

select distinct To_char(QDate,'Month') as Month,count(QuotationId)as QuotationCount 
from Quotation group by Qdate

Answer 1

您需要在To_char(QDate,'Month')子句中添加group by

select To_char(QDate,'Month') as Month,count(QuotationId)as QuotationCount  
from Quotation group by To_char(QDate,'Month')

Answer 2

如果您希望按时间顺序排列数据，则：

select to_char(QDate, 'Month') as Month, count(*) as QuotationCount 
from Quotation
group by to_char(QDate, 'Month')
order by to_char(QDate, 'MM);

在某些数据库中，可以使用SELECT中定义的列别名：

group by Month