Question

好的，我有一个我正在尝试使用的子查询，需要回答一个复杂的问题。有一个SQL工具用于生成报告。使用此工具，只要日期位于外部select语句中，您就可以选择日期。因此，您可以使用此工具从简单的select语句中选择日期范围，例如：

select date_entered, name from opportunities

使用该工具可以正常工作。

但是，我有一个SQL要求，我需要让每一列都是它自己的SQL语句（基本上是一系列子查询）。我的问题是 - 无论如何有子查询使用初始选择中的日期？以下是我必须执行的select语句示例：

SELECT
(
    SELECT
        count(
            opportunities.id) AS "count_for_opp_id"

    FROM
        opportunities 
LEFT JOIN opportunities_cstm ON opportunities.id = opportunities_cstm.id_c
WHERE
    opportunities.deleted = '0'
AND ((curdate() - interval 0 day) <= opportunities.date_entered)
AND opportunities_cstm.lead_category_c = 'GM Internet'
AND opportunities_cstm.lead_type_c = 'Sales'
AND opportunities_cstm.partner_id_c LIKE '41%'
OR opportunities_cstm.partner_id_c LIKE '42%'
OR opportunities_cstm.partner_id_c LIKE '43%'
OR opportunities_cstm.partner_id_c LIKE '44%'
OR opportunities_cstm.partner_id_c LIKE '45%'
OR opportunities_cstm.partner_id_c LIKE '47%'
OR opportunities_cstm.partner_id_c LIKE '48%'
OR opportunities_cstm.partner_id_c LIKE '49%'
OR opportunities_cstm.lead_sub_type_c = 'GM 3rd Party'
)AS TOT_DIV_THIRD_PARTY_SALES_LEADS,
(
SELECT
count(opportunities.id) AS "count_for_opp_id"
FROM
opportunities left
    JOIN opportunities_cstm ON opportunities.id = opportunities_cstm.id_c
WHERE
    opportunities.deleted = '0'
AND ((curdate() - interval 0 day) <= opportunities.date_entered)
AND opportunities_cstm.lead_category_c = 'Dealer Web'
AND opportunities_cstm.lead_type_c = 'Sales'
AND opportunities_cstm.lead_sub_type_c = 'GM Dealer Website'
OR opportunities_cstm.lead_sub_type_c = 'DMA Landing Page'
)AS TOT_DEALER_WEBSITE_DMA_SALES_LEADS,
(
    SELECT
        count(opportunities.id) AS "count_for_opp_id"
    FROM
        opportunities left
    JOIN opportunities_cstm ON opportunities.id = opportunities_cstm.id_c
JOIN leads_handling_objectives
WHERE
opportunities.deleted = '0'
AND ((curdate() - interval 0 day) <= opportunities.date_entered)
AND opportunities_cstm.lead_category_c = 'GM Internet'
AND opportunities_cstm.partner_id_c LIKE '41%'
OR opportunities_cstm.partner_id_c LIKE '42%'
OR opportunities_cstm.partner_id_c LIKE '43%'
OR opportunities_cstm.partner_id_c LIKE '44%'
OR opportunities_cstm.partner_id_c LIKE '45%'
OR opportunities_cstm.partner_id_c LIKE '47%'
OR opportunities_cstm.partner_id_c LIKE '48%'
OR opportunities_cstm.partner_id_c LIKE '49%'
OR opportunities_cstm.lead_sub_type_c = 'GM 3rd Party'
AND opportunities_cstm.time_followup_c <= leads_handling_objectives.resp_time_obj
AND opportunities_cstm.make_c = leads_handling_objectives.makes_carried
AND opportunities_cstm.time_followup_c IS NOT NULL
)AS NUM_OF_LEADS_RESP_ONTIME_DIVISIONAL_THIRD_PARTY,
(
    SELECT
        count(opportunities.id) AS "count_for_opp_id"
    FROM
        opportunities left
    JOIN opportunities_cstm ON opportunities.id = opportunities_cstm.id_c
JOIN leads_handling_objectives
WHERE
opportunities.deleted = '0'
AND ((curdate() - interval 0 day) <= opportunities.date_entered)
AND opportunities_cstm.lead_category_c = 'Dealer Web'
AND opportunities_cstm.lead_sub_type_c = 'GM Dealer Website'
OR opportunities_cstm.lead_sub_type_c = 'DMA Landing Page'
AND opportunities_cstm.time_followup_c <= leads_handling_objectives.resp_time_obj
AND opportunities_cstm.make_c = leads_handling_objectives.makes_carried
AND opportunities_cstm.time_followup_c IS NOT NULL
)AS NUM_OF_LEADS_RESP_ONTIME_DEALERWEBSITE_DMA

如果查看此查询，您会注意到子查询的curdate ...＆lt; = date_entered部分。我需要以某种方式在select语句的外层实现这个。但是，如果我将它放在外层，我不知道如何使子查询使用这样的日期范围。

我知道这是一个复杂的问题但是 - 那里的任何人都会有任何建议吗？谢谢！

（注意：此外，这不能是一个过程或一个函数。它必须是一个select语句或一个与报表工具一起使用的视图。）

还有一个编辑 - 上面SQL的一个更简单（更小）的片段可以集中在这里：

SELECT
(SELECT
        count(
            opportunities.id) AS "count_for_opp_id"

    FROM
        opportunities 
LEFT JOIN opportunities_cstm ON opportunities.id = opportunities_cstm.id_c
WHERE
    opportunities.deleted = '0'
AND ((curdate() - interval 0 day) <= opportunities.date_entered)
AND opportunities_cstm.lead_category_c = 'GM Internet'
AND opportunities_cstm.lead_type_c = 'Sales'
) AS TOT_DIV_THIRD_PARTY_SALES_LEADS

从长远来看，上面这个可能更容易阅读，更容易诊断。

谢谢！

Answer 1

你的（较小的）查询缺少一个FROM。放入一个会给你一个挂钩来挂起curdate（）函数......

SELECT (SELECT count(opportunities.id) AS "count_for_opp_id"
            FROM opportunities LEFT JOIN opportunities_cstm ON opportunities.id = opportunities_cstm.id_c
            WHERE opportunities.deleted              = '0' AND
                  ((curdate() - interval 0 day)     <= opportunities.date_entered) AND 
                  opportunities_cstm.lead_category_c = 'GM Internet' AND
                  opportunities_cstm.lead_type_c     = 'Sales') AS TOT_DIV_THIRD_PARTY_SALES_LEADS
    FROM any_table
    LIMIT 1;

第二个建议......

SELECT <given date>,
       (SELECT count(opportunities.id) AS "count_for_opp_id"
            FROM opportunities LEFT JOIN opportunities_cstm ON opportunities.id = opportunities_cstm.id_c
            WHERE opportunities.deleted              = '0' AND
                  (<given date>                     <= opportunities.date_entered AND 
                  opportunities_cstm.lead_category_c = 'GM Internet' AND
                  opportunities_cstm.lead_type_c     = 'Sales') AS TOT_DIV_THIRD_PARTY_SALES_LEADS
    FROM any_table
    LIMIT 1;

给定日期可以是文字或变量，也可以出现在any_table中;它会很好地进入子查询。

子查询问题之间的MySQL日期

1 个答案: