Sql 每月盘点记录

我试图统计2014年每个月的预约次数，日期格式类似于'2014年1月22日' 到目前为止，我已经尝试了这两个代码的变体，但都得到了“年”：无效标识符

代码1

SELECT count(*), MONTH(dateofappointment) as month, YEAR(dateofappointment) as year
FROM appointment
GROUP BY month
HAVING YEAR(dateofappointment) ='14'
ORDER BY month;

代码2

select count(*)
from appointment
group by month(dateofappointment)
having year(dateofappointment) = '14';

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感谢您的帮助。

请使用

摘录

参考资料

SELECT EXTRACT(month FROM dateofappointment) "Month", count(*)
FROM appointment
WHERE EXTRACT(YEAR FROM dateofappointment) = '2014'
GROUP BY EXTRACT(month FROM dateofappointment)
ORDER BY EXTRACT(month FROM dateofappointment);

有一个月的名字而不是数字

SELECT TO_CHAR(TO_DATE(EXTRACT(month FROM dateofappointment), 'MM'), 'MONTH') "Month", count(*)
FROM appointment
WHERE EXTRACT(YEAR FROM dateofappointment) = '2014'
GROUP BY EXTRACT(month FROM dateofappointment)
ORDER BY EXTRACT(month FROM dateofappointment);

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您的年份应为整数。
此外，除非你的任命发生在第一世纪，否则你的任期应该是2014年

试试这个：

select  EXTRACT(month FROM dateofappointment), count(*)
from appointment
where EXTRACT(year FROM dateofappointment) = 2014
group by EXTRACT(month FROM dateofappointment)

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按月份和年份的数据，按日期从最早到最新排序：

SELECT
    EXTRACT(year FROM dateofappointment) "Year",
    EXTRACT(month FROM dateofappointment) "Month",
    count(*) 
FROM
    appointment 
GROUP BY
    EXTRACT(year FROM dateofappointment),
    EXTRACT(month FROM dateofappointment) 
ORDER BY
    1,
    2;

---

您的关系数据库管理系统是什么？SQL服务器小姐？是

dateofappoint

是

DateTime

列还是

varchar

？@Selva TS，我使用的是oracle，我收到的所有文档都说它是“date”类型。Shandep更新了我的答案，使用了oracle更新了我的答案，按照您的说明使用了oracle谢谢，这终于奏效了。正如佐哈尔所建议的那样，我不得不将14改为2014。有没有办法将月份的显示从数字改为月份名称？