我想在SQL中将一行拆分成几行。
例如,我有一个“ ADCT DROP INCALL-”,其中包含空格和一个“-”,我希望其中的值在几行中保持分开。
原始结果:
SELECT statuses FROM campaigns;
+-----------------------------------------+
| RESULT OF QUERY |
+-----------------------------------------+
| A ADCT DROP INCALL - |
+-----------------------------------------+
结果必须像:
+-----------------------------------------+
| RESULT OF QUERY |
+-----------------------------------------+
| A |
| ADCT |
| DROP |
| INCALL |
+-----------------------------------------+
我尝试使用SUBSTRING_INDEX,例如:
SELECT status
FROM statuses
WHERE statuses.status NOT IN (SELECT SUBSTRING_INDEX(TRIM(dial_statuses)," ", 1) FROM campaigns WHERE campaign_id = '4000')
ORDER BY STATUS;
对不起,我知道这太基础了。
最佳答案
我相信您可以这样做:
SELECT
tablename.id,
SUBSTRING_INDEX(SUBSTRING_INDEX(tablename.name, ',', numbers.n), ',', -1)
name
FROM
numbers
INNER JOIN tablename ON CHAR_LENGTH(tablename.name)
-CHAR_LENGTH(REPLACE(tablename.name, ',', ''))>=numbers.n-1
ORDER BY
id, n
请参阅小提琴here。
如果无法创建表,则解决方案可以是:
SELECT
tablename.id,
SUBSTRING_INDEX(SUBSTRING_INDEX(tablename.name, ',', numbers.n), ',', -1)
name
FROM
(select 1 n union all
select 2 union all select 3 union all
select 4 union all select 5) numbers
INNER JOIN tablename ON CHAR_LENGTH(tablename.name)
-CHAR_LENGTH(REPLACE(tablename.name, ',', ''))>=numbers.n-1
ORDER BY
id, n
一个小提琴的例子是here。
关于mysql - 如何将值分成几行(MySQL),我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/45940508/