Question

我有以下3个表格：

custom_data table：

+----+----------------------+
| id | name                 |
+----+----------------------+
| 13 | ACCOUNT NAME         |
| 14 | ACCOUNT NO           |
| 15 | ID NUMBER            |
+----+----------------------+

custom_data_values表：

+----------------+-----------------+-----------+
| custom_data_id | value           | member_id |
+----------------+-----------------+-----------+
|             13 | Ivy Jane Mosendi|        33 |
|             14 | 2199030092      |        33 |
|             15 | 25917781        |        33 |
+----------------+-----------------+-----------+

会员表：

+----+----------------------------+
| id | name                       |
+----+----------------------------+
| 30 | John Doe                   |
| 31 | Willy Ong                  |
| 32 | James Reid                 |
| 33 | Ivy Jane Mosendi           |
+----+----------------------------+

我想要以下结果：

+----+------------------+------------------+-------------+-------------+
| id | name             | ACCOUNT NAME     | ACCOUNT NO  | ID NUMBER   |
+----+------------------+------------------+-------------+-------------+
| 33 | Ivy Jane Mosendi | Ivy Jane Mosendi | 2199030092  | 25917781    |
+----+------------------+------------------+-------------+-------------+

如何使用mysql查询实现此结果？

Answer 1

我终于破解了它。谢谢大家

SELECT m.name
        , MAX(CASE WHEN cf.name = 'ACCOUNT NAME' Then cfv.string_value END) As 'ACCOUNT NAME'
        , MAX(CASE WHEN cf.name = 'ACCOUNT NO' Then cfv.string_value END) As 'ACCOUNT NO'
        , MAX(CASE WHEN cf.name = 'ID NUMBER' Then cfv.string_value END) As 'ID NUMBER'
     FROM custom_field_values cfv
     INNER JOIN custom_fields cf
         ON cf.id = cfv.field_id
     INNER JOIN members m
         ON m.id =  cfv.member_id
     WHERE m.id = 33

如何在MySQL中检索多个表并格式化其中的一些行？

1 个答案: