mysql - 在 MySQL 中编写一个过程，使用分隔符将列拆分为行

Question

这是我的表格:

CREATE TABLE sometbl ( ID INT, NAME VARCHAR(50) );
INSERT INTO sometbl VALUES (1, 'Smith'), (2, 'Julio|Jones|Falcons'), (3,
'White|Snow'), (4, 'Paint|It|Red'), (5, 'Green|Lantern'), (6, 'Brown|bag');

表格输出

----------------------------------------
ID NAME
1 Smith
2 Julio|Jones|Falcons
3 White|Snow
4 Paint|It|Red
5 Green|Lantern
6 Brown|bag
------------------------------------------

输出应该如下所示:

对于 (2)，示例行看起来像 >> “3, white”, “3, Snow” ...

请帮助我。

Answer 1

-- sample data = 2 One|Two|Three|Four

-- get the first bit: 2 One
SELECT ID, substring_index(NAME, '|', 1) AS NAME FROM tab

UNION

-- get the 2nd bit: 2 Two
SELECT ID, substring_index(substring_index(NAME, '|', 2),'|',-1) AS NAME FROM tab

UNION

-- get the 3rd bit: 2 Three
SELECT ID, substring_index(substring_index(NAME, '|', 3),'|',-1) AS NAME FROM tab

UNION

-- get the last bit: 2 Four
SELECT ID, substring_index(NAME, '|',-1) AS NAME FROM tab