假设我有一张 table :学生
______________________________________________________
|id | name | school | class |
______________________________________________________
| 1 | John | ABC | C1 |
| 2 | Jack | ABC | C1 |
| 3 | Anna | ABC | C1 |
| 4 | Peter | DEF | D1 |
| 5 | Alex | ABC | C2 |
| 6 | Bryan | ABC | C2 |
| 7 | David | ABC | C2 |
| 8 | Cristian | DEF | D1 |
_______________________________________________________
使用这个查询:
SELECT a.class,GROUP_CONCAT(a.name) as names FROM students a WHERE a.school='ABC' GROUP BY a.class
给我这个结果:
____________________________
|class | names |
____________________________
| C1 | John, Jack, Anna |
| C2 | Alex, Bryan, David|
____________________________
如何使用 Zend_Db_Table 或 Zend_Db_Select 在 Zend Framework 中执行此查询? 非常感谢!
最佳答案
我猜它会是这样的。试试吧。
$table = Your_DbTable_Class();
$select = $table->select()
->setIntegrityCheck(false)
->from(array('a' => 'students'), array( 'class' => 'class' , 'names' => new Zend_Db_Expr('GROUP_CONCAT(a.name)')) )
->where( 'a.school = ?', 'ABC' )
->group('a.class');
当我组装它时,它会给我以下查询:
SELECT `a`.`class`, GROUP_CONCAT(a.name) AS `names` FROM `students` AS `a`
WHERE (a.school = 'ABC')
GROUP BY `a`.`class`
是您要找的吗?
关于php - 如何在 Zend Framework 中使用 GROUP_CONCAT?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6329077/