Question

我有一个SQL查询，我在一个看起来像这样的mysql数据库上运行......

    $count0 = $wpdb->get_results("

 SELECT *, COUNT(*) as TotalValueCount 
   FROM
   wp_rg_lead
   INNER JOIN wp_rg_lead_detail ON
   wp_rg_lead.id=wp_rg_lead_detail.lead_id
   WHERE wp_rg_lead.form_id = '46'
   AND  cast(date_created as date) >= current_date - interval '7' day
   AND field_number = '18'
   GROUP BY value
            ");

    foreach ( $count0 as $page ) {
   echo $repid_field . ' - ' . $page->form_id . ' -  ' . $page->value .  ' - ' . $page->lead_id . ' - ' . $page->date_created.' - ' . $page->TotalValueCount. '<br/>';

我想要做的是返回前7天每个值的计数，所以我可以得到这样的结果......

value  |  01/01/2014  |  01/01/2014  |  01/01/2014
--------------------------------------------------
AA01         34              23            12
BR65         3               65            65
YR76         45              12            65

这是我之后需要用php函数做的事情，还是可以用SQL查询本身来完成？

Answer 1

这个应该做的工作

SELECT   value, 
        sum(case 
                when cast(date_created as date) = current_date - interval '7' day 
                then 1 else 0 end
            ) d7,
        ...
        sum(case 
                when cast(date_created as date) = current_date - interval '1' day 
                then 1 else 0 end
            ) d1
FROM  wp_rg_lead
INNER JOIN wp_rg_lead_detail ON
wp_rg_lead.id=wp_rg_lead_detail.lead_id
WHERE wp_rg_lead.form_id = '46'
AND  cast(date_created as date) >= current_date - interval '7' day
AND field_number = '18'
GROUP BY value

每个指定日期的SQL查询计数

1 个答案: