{"id":102,"date":"2008-12-17T15:57:33","date_gmt":"2008-12-17T20:57:33","guid":{"rendered":"http:\/\/www.dev-notes.com\/blog\/2008\/12\/17\/generating-random-numbers-characters-and-dates-with-oracle-sql\/"},"modified":"2008-12-17T15:57:33","modified_gmt":"2008-12-17T20:57:33","slug":"generating-random-numbers-characters-and-dates-with-oracle-sql","status":"publish","type":"post","link":"https:\/\/www.dev-notes.com\/blog\/2008\/12\/17\/generating-random-numbers-characters-and-dates-with-oracle-sql\/","title":{"rendered":"Generating random numbers, characters, and dates with Oracle SQL"},"content":{"rendered":"<p>Please review the following series of samples for how the dbms_random package works.<\/p>\n<p>Random number:<\/p>\n<pre class=\"code\">\nselect dbms_random.random as rand_numb from dual;\n\n RAND_NUMB\n----------\n-1.642E+09\n<\/pre>\n<p>Random number between 0 and 1:<\/p>\n<pre class=\"code\">\nselect dbms_random.value as rand_numb_btwn_0_1 from dual;\n\nRAND_NUMB_BTWN_0_1\n------------------\n        .950707301\n<\/pre>\n<p>Random number between <i>x<\/i> and <i>y<\/i>:<\/p>\n<pre class=\"code\">\nselect dbms_random.value(10,20) as rand_numb_btwn_10_20 from dual;\n\nRAND_NUMB_BTWN_10_20\n--------------------\n          14.6714295\n<\/pre>\n<p>Random upper case letters:<\/p>\n<pre class=\"code\">\nselect dbms_random.string('U',10) as rand_upper from dual;\n\nRAND_UPPER\n----------\nWVWZVYKNKP\n<\/pre>\n<p>Random lower case letters:<\/p>\n<pre class=\"code\">\nselect dbms_random.string('L',10) as rand_lower from dual;\n\nRAND_UPPER\n----------\njdoyttefuw\n<\/pre>\n<p>Random mixed case letters:<\/p>\n<pre class=\"code\">\nselect dbms_random.string('A',10) as rand_mixed from dual;\n\nRAND_MIXED\n----------\nUBagEltDAr\n<\/pre>\n<p>Random upper case alphanumeric characters:<\/p>\n<pre class=\"code\">\nselect dbms_random.string('X',10) as rand_upper_alphanumeric from dual;\n\nRAND_UPPER_ALPHANUMERIC\n-----------------------\nJSANG89O8S\n<\/pre>\n<p>Random characters:<\/p>\n<pre class=\"code\">\nselect dbms_random.string('P',10) as rand_chars from dual;\n\nRAND_CHARS\n----------\n}![ NSOoo1\n<\/pre>\n<p>Random date between 1 Oct 1920 and 15 Mar 2015:<br \/><small>Note: The values used, 2422599 and 2457085, are Julian date numbers.<\/small><\/p>\n<pre class=\"code\">\nselect to_date(trunc(dbms_random.value(2422599,2457085)),'j') as rand_date from dual;\n\nRAND_DATE\n---------\n07-NOV-62\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>This note demonstrates how you can use Oracle&#8217;s built-in dbms_random package to generate random values.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-102","post","type-post","status-publish","format-standard","hentry","category-oracle"],"_links":{"self":[{"href":"https:\/\/www.dev-notes.com\/blog\/wp-json\/wp\/v2\/posts\/102","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dev-notes.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dev-notes.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dev-notes.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dev-notes.com\/blog\/wp-json\/wp\/v2\/comments?post=102"}],"version-history":[{"count":0,"href":"https:\/\/www.dev-notes.com\/blog\/wp-json\/wp\/v2\/posts\/102\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.dev-notes.com\/blog\/wp-json\/wp\/v2\/media?parent=102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dev-notes.com\/blog\/wp-json\/wp\/v2\/categories?post=102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dev-notes.com\/blog\/wp-json\/wp\/v2\/tags?post=102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}