symfony - Doctrine SQL Query Order By ASC NULL Last

Question

我使用Doctrine 2.4。我尝试通过优先级升序排列我的活动列表，优先级为 NULL，最后优先级为 0。

SELECT * FROM campaign ORDER BY priority IS NULL, priority = 0, priority ASC

你知道我该怎么做吗？

$query->addOrderBy('c.priority', 'ASC');

标签： symfonydoctrinesymfony-2.8

Answer 1

我找到了解决方案，我这样做了：

$query->addSelect('CASE WHEN c.priority IS NULL THEN 1 ELSE 0 END as HIDDEN priority_is_null');
$query->addSelect('CASE WHEN c.priority = 0 THEN 1 ELSE 0 END as HIDDEN priority_is_zero');
$query->addOrderBy('priority_is_null', 'ASC');
$query->addOrderBy('priority_is_zero', 'ASC');
$query->addOrderBy('c.priority', 'ASC');