{"id":90,"date":"2023-08-24T07:54:56","date_gmt":"2023-08-24T07:54:56","guid":{"rendered":"https:\/\/mein-it-wissen.net\/?p=90"},"modified":"2023-08-24T07:54:56","modified_gmt":"2023-08-24T07:54:56","slug":"ausdruck-evaluieren-in-pl-sql","status":"publish","type":"post","link":"https:\/\/mein-it-wissen.net\/?p=90","title":{"rendered":"Ausdruck evaluieren in PL\/SQL"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<pre class=\"wp-block-code\"><code>DECLARE\r\nv1 number;\r\nv2 number;\r\nv_operator varchar2(2char);\r\n\r\nFUNCTION evaluate_expression(p_expression VARCHAR2) RETURN BOOLEAN IS\r\n  v_result BOOLEAN;\r\nBEGIN\r\n  EXECUTE IMMEDIATE 'BEGIN :result := ' || p_expression || '; END;' USING OUT v_result;\r\n  RETURN v_result;\r\nEXCEPTION\r\n  WHEN OTHERS THEN\r\n    RETURN FALSE; -- Falls ein Fehler auftritt, wird der Ausdruck als falsch betrachtet\r\nEND;\r\nbegin\r\nv1 := 2;\r\nv2 := 1;\r\nv_operator := '&lt;';\r\nif evaluate_expression(v1||v_operator||v2) then\r\ndbms_output.put_line('Das ist richtig');\r\nelse\r\ndbms_output.put_line('Das ist falsch');\r\nend if;\r\nend;<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,4],"tags":[],"class_list":["post-90","post","type-post","status-publish","format-standard","hentry","category-oracle","category-plsql"],"_links":{"self":[{"href":"https:\/\/mein-it-wissen.net\/index.php?rest_route=\/wp\/v2\/posts\/90","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mein-it-wissen.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mein-it-wissen.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mein-it-wissen.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mein-it-wissen.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=90"}],"version-history":[{"count":4,"href":"https:\/\/mein-it-wissen.net\/index.php?rest_route=\/wp\/v2\/posts\/90\/revisions"}],"predecessor-version":[{"id":94,"href":"https:\/\/mein-it-wissen.net\/index.php?rest_route=\/wp\/v2\/posts\/90\/revisions\/94"}],"wp:attachment":[{"href":"https:\/\/mein-it-wissen.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=90"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mein-it-wissen.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=90"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mein-it-wissen.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=90"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}