{"id":234,"date":"2025-09-03T15:04:54","date_gmt":"2025-09-03T15:04:54","guid":{"rendered":"https:\/\/fhix.fr\/?p=234"},"modified":"2025-09-04T07:31:22","modified_gmt":"2025-09-04T07:31:22","slug":"agregation-de-donnees","status":"publish","type":"post","link":"https:\/\/fhix.fr\/index.php\/2025\/09\/03\/agregation-de-donnees\/","title":{"rendered":"Agr\u00e9gation de donn\u00e9es avec LISTAGG"},"content":{"rendered":"\n<p><code><strong>SELECT<\/strong> item ,<br><strong>LISTAGG<\/strong>(<strong>TRIM<\/strong>(couleur), ',') <strong>WITHIN GROUP<\/strong>(<strong>ORDER BY<\/strong> couleur)<br><strong>AS<\/strong> couleurs<br><strong>FROM<\/strong> article<br><strong>GROUP BY<\/strong> item<\/code><\/p>\n\n\n\n<p><strong>Explications :<\/strong><br><strong>LISTAGG<\/strong> permet de lister dans une colonne les donn\u00e9es issues de plusieurs lignes.<br><code>LISTAGG(colonne_\u00e0_concat\u00e9ner , 's\u00e9parateur') WITHIN GROUP(ORDER BY colonne_de_tri)<\/code><br><br>Dans l&rsquo;exemple donn\u00e9, le SQL transforme le fichier article suivant<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"439\" height=\"170\" src=\"https:\/\/fhix.fr\/wp-content\/uploads\/2025\/09\/image-6.png\" alt=\"\" class=\"wp-image-240\" srcset=\"https:\/\/fhix.fr\/wp-content\/uploads\/2025\/09\/image-6.png 439w, https:\/\/fhix.fr\/wp-content\/uploads\/2025\/09\/image-6-300x116.png 300w\" sizes=\"auto, (max-width: 439px) 100vw, 439px\" \/><\/figure>\n\n\n\n<p>en 2 lignes compos\u00e9es de la colonne item et d&rsquo;une colonne de couleurs s\u00e9par\u00e9es par la virgule<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"439\" height=\"68\" src=\"https:\/\/fhix.fr\/wp-content\/uploads\/2025\/09\/image-7.png\" alt=\"\" class=\"wp-image-241\" srcset=\"https:\/\/fhix.fr\/wp-content\/uploads\/2025\/09\/image-7.png 439w, https:\/\/fhix.fr\/wp-content\/uploads\/2025\/09\/image-7-300x46.png 300w\" sizes=\"auto, (max-width: 439px) 100vw, 439px\" \/><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SELECT item ,LISTAGG(TRIM(couleur), &lsquo;,&rsquo;) WITHIN GROUP(ORDER BY couleur)AS couleursFROM articleGROUP BY item Explications :LISTAGG permet de lister dans une colonne les donn\u00e9es issues de plusieurs lignes.LISTAGG(colonne_\u00e0_concat\u00e9ner , &lsquo;s\u00e9parateur&rsquo;) WITHIN GROUP(ORDER BY colonne_de_tri) Dans l&rsquo;exemple donn\u00e9, le SQL transforme le fichier article suivant en 2 lignes compos\u00e9es de la colonne item et d&rsquo;une colonne de couleurs &#8230; <a title=\"Agr\u00e9gation de donn\u00e9es avec LISTAGG\" class=\"read-more\" href=\"https:\/\/fhix.fr\/index.php\/2025\/09\/03\/agregation-de-donnees\/\" aria-label=\"En savoir plus sur Agr\u00e9gation de donn\u00e9es avec LISTAGG\">Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-234","post","type-post","status-publish","format-standard","hentry","category-sql-db2"],"_links":{"self":[{"href":"https:\/\/fhix.fr\/index.php\/wp-json\/wp\/v2\/posts\/234","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fhix.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fhix.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fhix.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fhix.fr\/index.php\/wp-json\/wp\/v2\/comments?post=234"}],"version-history":[{"count":7,"href":"https:\/\/fhix.fr\/index.php\/wp-json\/wp\/v2\/posts\/234\/revisions"}],"predecessor-version":[{"id":248,"href":"https:\/\/fhix.fr\/index.php\/wp-json\/wp\/v2\/posts\/234\/revisions\/248"}],"wp:attachment":[{"href":"https:\/\/fhix.fr\/index.php\/wp-json\/wp\/v2\/media?parent=234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fhix.fr\/index.php\/wp-json\/wp\/v2\/categories?post=234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fhix.fr\/index.php\/wp-json\/wp\/v2\/tags?post=234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}