25 lines
491 B
MySQL
25 lines
491 B
MySQL
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/* Exemple sélectionner auteurs qui ont écris un articles sur le theme du covid
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+─────+──────────+
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| id | theme |
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+─────+──────────+
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| 1 | Mondial |
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| 2 | Covid |
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+─────+──────────+
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*/
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SELECT
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a.*
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FROM
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auteurs au
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JOIN
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auteurs.articles aa ON au.id = aa.id_auteur
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JOIN
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articles art ON aa.id_article = art.id
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JOIN
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themes t ON art.id_theme = t.id
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WHERE
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t.id = 2
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