{"id":1623,"date":"2023-05-23T04:20:33","date_gmt":"2023-05-23T04:20:33","guid":{"rendered":"https:\/\/itnotes.apjsoftwares.com\/?p=1623"},"modified":"2023-05-23T04:20:34","modified_gmt":"2023-05-23T04:20:34","slug":"how-mysql-optimizes-distinct","status":"publish","type":"post","link":"https:\/\/itnotes.apjsoftwares.in\/index.php\/2023\/05\/23\/how-mysql-optimizes-distinct\/","title":{"rendered":"How MySQL Optimizes DISTINCT?"},"content":{"rendered":"\n<p>DISTINCT is converted to a GROUP BY on all columns and it will be combined with ORDER BY clause.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">SELECT DISTINCT t1.a FROM t1,t2 where t1.a=t2.a;<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>DISTINCT is converted to a GROUP BY on all columns and it will be combined&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[35],"tags":[],"_links":{"self":[{"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/posts\/1623"}],"collection":[{"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/comments?post=1623"}],"version-history":[{"count":1,"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/posts\/1623\/revisions"}],"predecessor-version":[{"id":1624,"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/posts\/1623\/revisions\/1624"}],"wp:attachment":[{"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/media?parent=1623"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/categories?post=1623"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/tags?post=1623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}