Question

我正在尝试将此查询“翻译”为fluentPDO语句，但我找不到使用子查询的方法

SELECT plan.*, COUNT(DISTINCT click.id) AS clicks, COUNT(DISTINCT impression.id) as impressions, IFNULL(A.earnings, 0) AS earnings FROM plan
LEFT JOIN click ON click.plan_id = plan.id
LEFT JOIN impression ON impression.plan_id = plan.id
LEFT JOIN (
    SELECT plan_id AS earnings_id, SUM(signup.earning) as earnings FROM signup
) A ON A.earnings_id = plan.id
GROUP BY plan.id

任何帮助？

Answer 1

我不知道一种更好的方法，而不仅仅是将原始SQL子查询放在leftJoin方法中：

$fluent->from('plan')
->select('COUNT(DISTINCT click.id) AS clicks, COUNT(DISTINCT impression.id) as impressions, IFNULL(A.earnings, 0) AS earnings')
->leftJoin('click ON click.plan_id = plan.id')
->leftJoin('impression ON impression.plan_id = plan.id')
->leftJoin('(SELECT plan_id AS earnings_id, SUM(signup.earning) as earnings FROM signup) A ON A.earnings_id = plan.id')
->groupBy('plan.id');

我发现SitePoints's FluentPDO guide非常有用，但他们没有提到子查询。他们还建议您不需要明确地将联接点击计划和展示留给计划，但在实践中，我永远无法告诉FluentPDO将推断两个表之间的关系。

fluentPDO中的子查询

1 个答案: