上周首次上班时创建员工表

Question

我正在尝试提取上周首次轮班的工人名单。

现在，如果我将上周第一班的特定工作人员放在where子句（import matplotlib.pyplot as plt import seaborn as sns plot=sns.barplot(data=df, x=" ", y=" ") plt.setp(plot.get_xticklabels(), rotation=90) 中，则我的SQL可用，但是当我删除该子句时，它只是超时

WHERE c.temp_nr ='XXXX'

Answer 1

使用GROUP BY c.temp_nr

SELECT MIN(p.start_date), CONCAT(c.first_name, ' ', c.last_name) AS 'c.fullname', c.temp_nr
FROM contactstable c
LEFT JOIN projectlines p on c.temp_nr = p.candidate_number
WHERE c.contact_type = 'Candidate'
GROUP BY c.temp_nr
HAVING
    MIN(p.start_date)
        between
            DATE_SUB(CURDATE(), INTERVAL (dayofweek(CURDATE())+6) DAY)
            AND DATE_SUB(CURDATE() , INTERVAL (dayofweek(CURDATE())) DAY)