{"id":80,"date":"2008-08-04T12:40:08","date_gmt":"2008-08-04T10:40:08","guid":{"rendered":"http:\/\/unckel.com\/blog\/?p=80"},"modified":"2019-12-07T22:28:04","modified_gmt":"2019-12-07T21:28:04","slug":"sql-union-tipps-unterschiedlich-viele-spalten-unterschiediche-spaltennamen-sortierung","status":"publish","type":"post","link":"https:\/\/unckel.de\/blog\/sql-union-tipps-unterschiedlich-viele-spalten-unterschiediche-spaltennamen-sortierung\/","title":{"rendered":"SQL: UNION Tipps &#8211; unterschiedlich viele Spalten \/ unterschiediche Spaltennamen \/ Sortierung"},"content":{"rendered":"<p>Fehlenden Spalten einfach mit\u00a0NULL\u00a0oder einem vordefiniertem Wert hinzuf\u00fcgen:<\/p>\n<pre>SELECT SpalteA, SpalteB FROM Tabelle1\nUNION\nSELECT SpalteA, NULL AS SpalteB FROM Tabelle2<\/pre>\n<p>Unterschiedlichen Spaltennamen mit\u00a0AS\u00a0angleichen:<\/p>\n<pre>SELECT SpalteA FROM Tabelle1\nUNION\nSELECT SpalteB AS SpalteA FROM Tabelle2<\/pre>\n<p>Nur nach dem zweiten\u00a0SELECT\u00a0per\u00a0ORDER\u00a0sortieren. Nicht bei beiden. (Wirkt sich aber auf beide Tabellen aus):<\/p>\n<pre>SELECT Spalte1, Spalte2 FROM Tabelle1\nUNION\nSELECT Spalte1, Spalte2 FROM Tabelle2\nORDER BY Spalte1<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fehlenden Spalten einfach mit\u00a0NULL\u00a0oder einem vordefiniertem Wert hinzuf\u00fcgen: SELECT SpalteA, SpalteB FROM Tabelle1 UNION SELECT SpalteA, NULL AS SpalteB FROM Tabelle2 Unterschiedlichen Spaltennamen mit\u00a0AS\u00a0angleichen: SELECT SpalteA FROM Tabelle1 UNION SELECT SpalteB AS SpalteA FROM Tabelle2 Nur nach dem zweiten\u00a0SELECT\u00a0per\u00a0ORDER\u00a0sortieren. Nicht bei beiden. (Wirkt sich aber auf beide Tabellen aus): SELECT Spalte1, Spalte2 FROM Tabelle1 UNION [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[71],"tags":[],"class_list":["post-80","post","type-post","status-publish","format-standard","hentry","category-webdesign"],"_links":{"self":[{"href":"https:\/\/unckel.de\/blog\/wp-json\/wp\/v2\/posts\/80","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unckel.de\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unckel.de\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unckel.de\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unckel.de\/blog\/wp-json\/wp\/v2\/comments?post=80"}],"version-history":[{"count":1,"href":"https:\/\/unckel.de\/blog\/wp-json\/wp\/v2\/posts\/80\/revisions"}],"predecessor-version":[{"id":829,"href":"https:\/\/unckel.de\/blog\/wp-json\/wp\/v2\/posts\/80\/revisions\/829"}],"wp:attachment":[{"href":"https:\/\/unckel.de\/blog\/wp-json\/wp\/v2\/media?parent=80"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unckel.de\/blog\/wp-json\/wp\/v2\/categories?post=80"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unckel.de\/blog\/wp-json\/wp\/v2\/tags?post=80"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}