SELECT

    source.page_title AS title_source,

    cl.cl_to AS prio_source

    #target.page_title AS title_target,

    #SUM(CASE WHEN cl.cl_to = 'Top-priority_mathematics_articles' THEN 1 ELSE 0 END) AS count_top,

    #SUM(CASE WHEN cl.cl_to = 'High-priority_mathematics_articles' THEN 1 ELSE 0 END) AS count_high,

    #SUM(CASE WHEN cl.cl_to = 'Mid-priority_mathematics_articles' THEN 1 ELSE 0 END) AS count_mid,

    #SUM(CASE WHEN cl.cl_to = 'Low-priority_mathematics_articles' THEN 1 ELSE 0 END) AS count_low,

    #SUM(CASE WHEN cl.cl_to = 'NA-priority_mathematics_articles'

    #          OR cl.cl_to = 'Unknown-priority_mathematics_articles' THEN 1 ELSE 0 END) AS count_na

FROM

    # hubungan antar artikel

    page AS source

    #INNER JOIN pagelinks AS pl ON source.page_title = pl.pl_from

    #INNER JOIN linktarget AS lt ON pl.pl_target_id = lt.lt_id

    #INNER JOIN page AS target ON lt.lt_title = target.page_title

​

    # hubungan source dengan halaman diskusinya dan kategori di halaman itu

    INNER JOIN page AS talk ON source.page_title = talk.page_title

    INNER JOIN categorylinks AS cl ON talk.page_id = cl.cl_from

​

    # hubungan target dengan halaman diskusinya dan kategori di halaman itu

    #INNER JOIN page AS talk2 ON target.page_title = talk2.page_title

    #INNER JOIN categorylinks AS cl2 ON talk2.page_id = cl2.cl_from

​

WHERE

    # source ada di main dan bukan redirect

    source.page_namespace = 0

    AND source.page_is_redirect = 0

    # target ada di main dan bukan redirect

    #AND target.page_namespace = 0

    #AND target.page_is_redirect = 0

    # talk ada di talk :D

    AND talk.page_namespace = 1

    #AND talk2.page_namespace = 1

    # source dan target harus bertopik matematika

    AND cl.cl_to IN (

      'Top-priority_mathematics_articles',

      'High-priority_mathematics_articles',

      'Mid-priority_mathematics_articles',

      'Low-priority_mathematics_articles',

      'NA-priority_mathematics_articles',

      'Unknown-priority_mathematics_articles')

    #AND cl2.cl_to IN (

    #  'Top-priority_mathematics_articles',

    #  'High-priority_mathematics_articles',

    #  'Mid-priority_mathematics_articles',

    #  'Low-priority_mathematics_articles',

    #  'NA-priority_mathematics_articles',

    #  'Unknown-priority_mathematics_articles')

   #GROUP BY title_target