我需要帮助。我有 qurum 表
qurum table data table
qurum_id|qurum id|qurum1
1|one 1|3
2|two 2|2
3|three 3|1
4|four 4|7
5|five 5|5,6
6|six 6|4
7|seven 7|5
where qurum_id = data.qurum1
结果必须是
qurum_id|qurum|qurum1
1|one |3
2|two |2
3|three|1
4|four |7
5|five |5
**6|six |6
6|six |4**
7|seven|5
这是查询
`SELECT qurum_id, qurum,qurum1,
SUM(CASE WHEN DATE_FORMAT(aa.input_date, '%m') BETWEEN 01 AND 06
THEN 1 END) AS I,
SUM(CASE WHEN DATE_FORMAT(aa.input_date, '%m') BETWEEN 07 AND 12
THEN 1 END) AS II
FROM qurum AS qur
INNER JOIN (SELECT id, qurum1,input_date FROM DATA ) AS aa
ON qur.qurum_id = aa.qurum1
WHERE DATE_FORMAT(aa.input_date, '%Y') = $year
GROUP BY qurum_id
ORDER BY qurum_id`
结果是here
表中有第六行 qurum1 = 6|7,但我需要分解 6|7,因为 qurum_id 6 和 qurum_id 7 具有不同的 qurum。图片会show我想说的最好的
最佳答案
SELECT SUBSTRING_INDEX(qurum1, ' ', 1) AS first_part,
SUBSTRING_INDEX(qurum1, ' ', -1) as second_part FROM qurum;
关于mysql - 如何分解具有不同id的行?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43452474/