- 計(jì)算工作日數(shù)量:可以使用WEEKDAY函數(shù)結(jié)合條件語(yǔ)句來(lái)計(jì)算某個(gè)時(shí)間段內(nèi)的工作日數(shù)量,例如:
SELECT COUNT(*)
FROM your_table
WHERE WEEKDAY(date_column) < 5
AND date_column BETWEEN '2022-01-01' AND '2022-01-31';
- 查找特定工作日的數(shù)據(jù):可以使用WEEKDAY函數(shù)來(lái)查找某一周中特定工作日的數(shù)據(jù),例如查找周一的數(shù)據(jù):
SELECT *
FROM your_table
WHERE WEEKDAY(date_column) = 0;
- 根據(jù)工作日排序:可以使用WEEKDAY函數(shù)來(lái)根據(jù)工作日對(duì)結(jié)果進(jìn)行排序,例如按照周一到周日的順序排序:
SELECT *
FROM your_table
ORDER BY WEEKDAY(date_column);
- 統(tǒng)計(jì)每個(gè)工作日的數(shù)據(jù)量:可以使用WEEKDAY函數(shù)結(jié)合GROUP BY來(lái)統(tǒng)計(jì)每個(gè)工作日的數(shù)據(jù)量,例如統(tǒng)計(jì)每個(gè)工作日的銷(xiāo)售額:
SELECT WEEKDAY(date_column) AS weekday, SUM(sales_amount) AS total_sales
FROM your_table
GROUP BY WEEKDAY(date_column);
- 計(jì)算工作日平均值:可以使用WEEKDAY函數(shù)結(jié)合AVG函數(shù)來(lái)計(jì)算工作日的平均值,例如計(jì)算周一到周五的平均銷(xiāo)售額:
SELECT AVG(sales_amount)
FROM your_table
WHERE WEEKDAY(date_column) < 5;