select userId, articles_questions.content , articles.name , articles.nav , articles.nav , articles_questions.img1 , articles_questions.img2
LEFT JOIN articles_questions on (
articles_questions.article_id = articles.id AND (
articles_questions.img2 IS NOT NULL || articles_questions.img1 IS NOT NULL
WHERE page_id = '93'
group by articles.id
order by articles.ord
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