alaa_wmde added a comment.

  a quick snippet on clean up sql script
  
    DELETE FROM wbt_term_in_lang
    WHERE
        wbtl_id IS NOT IN (SELECT wbpt_term_in_lang_id FROM wbt_item_terms)
        AND wbtl_id IS NOT IN (SELECT wbpt_term_in_lang_id FROM 
wbt_property_terms)
    ;
    
    DELETE FROM wbt_text_in_lang
    WHERE
        wbxl_id IS NOT IN (SELECT wbtl_text_in_lang_id from wbt_term_in_lang)
    ;
    
    DELETE FROM wbt_text
    WHERE
        wbx_id IS NOT IN (SELECT wbxl_text_id from wbt_text_in_lang)
    ;
  
  @Ladsgroup @Addshore any concerns re indexes or sub-queries here

TASK DETAIL
  https://phabricator.wikimedia.org/T220150

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To: alaa_wmde
Cc: Ladsgroup, Addshore, alaa_wmde, Aklapper, JeroenDeDauw, Nandana, Lahi, 
Gq86, GoranSMilovanovic, QZanden, LawExplorer, _jensen, rosalieper, 
Wikidata-bugs, aude, Lydia_Pintscher, Mbch331
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