MYSQL 查询 - 如何在同一查询中按总计、当年和过去 12 个月对数据求和（按列求和 1）？

Question

我在我的网站中使用自定义类型的帖子，并且需要对一些数据（整数列）进行求和的查询。我可以做到这一点，但按月、当年和过去 12 个月，但不能一起（3 列）。

换句话说：

我目前有以下 3 个查询，然后我想加入其中一个（三列）。

1) 查询1（数据总和）

    SELECT
        wp_postmeta.meta_value AS 'Tipo de aeronave',
        COUNT(wp_posts.ID) AS 'Total'
    FROM 
        wp_postmeta
    LEFT JOIN 
        wp_posts ON wp_postmeta.post_id = wp_posts.ID
    WHERE 
        wp_posts.post_type = 'ocorrencia'
        AND wp_posts.post_status = 'publish' 
        AND wp_postmeta.meta_key = 'tipo_de_aeronaves_envolvidas' 
    GROUP BY 
        wp_postmeta.meta_value

此查询生成：

Tipo de aeronave                       Total (all data)
["Civil estrangeira"]                1
["Civil nacional","Militar nacional"]    3
["Civil nacional"]                      157
["Militar nacional"]                 38
["Nao aplicavel"]                        76

第二个查询是（过去 12 个月的数据总和）：

    SELECT
    wp_postmeta.meta_value AS 'Tipo de aeronave',
    COUNT(wp_posts.ID) AS 'Total'

    FROM wp_postmeta
        left JOIN wp_posts
        ON wp_postmeta.post_id = wp_posts.ID

    WHERE wp_posts.post_type = 'ocorrencia'
    AND wp_posts.post_status = 'publish' 
    AND wp_postmeta.meta_key = 'tipo_de_aeronaves_envolvidas' 
    AND wp_posts.post_date >= (CURRENT_DATE - INTERVAL 12 month) 

    GROUP BY wp_postmeta.meta_value

生成：

    Tipo de aeronave                    Total (12 months)
    ["Civil estrangeira"]                   1
    ["Civil nacional","Militar nacional"]   3
    ["Civil nacional"]                  157
    ["Militar nacional"]                    38
    ["Nao aplicavel"]                   73

第三个查询是（总和当年的数据）：

    SELECT
    wp_postmeta.meta_value AS 'Tipo de aeronave',
    COUNT(wp_posts.ID) AS 'Total'

    FROM wp_postmeta
    left JOIN wp_posts
    ON wp_postmeta.post_id = wp_posts.ID

    WHERE wp_posts.post_type = 'ocorrencia'
    AND wp_posts.post_status = 'publish' 
    AND wp_postmeta.meta_key = 'tipo_de_aeronaves_envolvidas' 
    AND YEAR(wp_posts.post_date) = YEAR(CURRENT_DATE)

    GROUP BY wp_postmeta.meta_value

生成：

    Tipo de aeronave                    Total (current year)
    ["Civil nacional","Militar nacional"]   1
    ["Civil nacional"]                  59
    ["Militar nacional"]                    19
    ["Nao aplicavel"]                   19

最后，我想要一个将所有结果合并为一个的查询！

    Tipo de aeronave              Total (all data) Total (last 12 months) Total (current year)
     ["Civil estrangeira"]                   1               1                  0
     ["Civil nacional","Militar nacional"]    3              3                  1
    ["Civil nacional"]                  157            157                  59
    ["Militar nacional"]                    38              38                  19
    ["Nao aplicavel"]                   73              73                  19

发送很多！

Answer 1

SELECT wp_postmeta.meta_value AS Tipo de aeronave , COUNT(wp_posts.ID) AS Total , COUNT( CASE WHEN YEAR(wp_posts.post_date) = YEAR(CURRENT_DATE) THEN 1 END ) AS TOT_CURR_YR , COUNT( CASE WHEN wp_posts.post_date >= (CURRENT_DATE - INTERVAL 12 month) THEN 1 END ) AS TOT_LAST_12_MONTHS FROM wp_postmeta LEFT JOIN wp_posts ON wp_postmeta.post_id = wp_posts.ID WHERE wp_posts.post_type = 'ocorrencia' AND wp_posts.post_status = 'publish' AND wp_postmeta.meta_key = 'tipo_de_aeronaves_envolvidas' GROUP BY wp_postmeta.meta_value