优化WordPress的MySQL查询以提高性能和执行时间

Question

我正在使用MySQL查询从WordPress数据库中提取一些数据。该查询花费的时间太长，仅在phpmyadmin中加载。我需要帮助，以便可以提高性能。

我正在运行一个MySQL查询，该查询从WordPress数据库中提取数据。我有一个带有48 GB RAM和16核心vcpu的高端服务器。以下是我的查询。

select 
    main.post_author as agent_id,
    pt.meta_value as portal,


    (
    select count(wp_posts.id)  from wp_posts
    left join wp_postmeta as fdadt ON (wp_posts.id = fdadt.post_id AND fdadt.meta_key in ('hgsc_data_assigned_date','warrantyactivation_data_assigned_date'))
    left join wp_postmeta as fdpt ON (wp_posts.id = fdpt.post_id AND fdpt.meta_key in ('hgsc_portal','warrantyactivation_portal'))
    where ((date_format(fdadt.meta_value,'%Y-%m-%d') >='2019-07-08') and (date_format(fdadt.meta_value,'%Y-%m-%d') <='2019-07-08'))
    and wp_posts.post_author=main.post_author
    and fdpt.meta_value=pt.meta_value
    and wp_posts.post_type in ('hg-scratch-card','hg-warranty-act')
    and wp_posts.post_status='publish' 
    )
    as fresh_data


    from wp_posts main
    LEFT JOIN wp_postmeta as pt ON (main.id = pt.post_id AND pt.meta_key in ('hgsc_portal','warrantyactivation_portal'))

    where 
    main.post_type in ('hg-scratch-card','hg-warranty-act')
    and 
    main.post_status='publish'

    group by agent_id,portal
    order by agent_id asc

我需要再添加几个子查询。我想知道性能是否可以提高。