{"id":197,"date":"2008-09-07T16:16:00","date_gmt":"2008-09-07T16:16:00","guid":{"rendered":"http:\/\/blog.trungson.com\/?p=197"},"modified":"2008-09-07T16:16:00","modified_gmt":"2008-09-07T16:16:00","slug":"show-columns-from-mydatabase-mytable","status":"publish","type":"post","link":"http:\/\/blog.trungson.com\/?p=197","title":{"rendered":"SHOW COLUMNS FROM MyDatabase.MyTable"},"content":{"rendered":"<p>That operation will always require a disk read, which is rather expensive, especially for larger tables. For example, for a 500MB table in my test, it takes 0.23 seconds just for this query. I thought the table schema should not depend on its size. Guess there is something more technical than my basic understanding.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>That operation will always require a disk read, which is rather expensive, especially for larger tables. For example, for a 500MB table in my test, it takes 0.23 seconds just for this query. I thought the table schema should not depend on its size. Guess there is something more technical than my basic understanding.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.trungson.com\/index.php?rest_route=\/wp\/v2\/posts\/197"}],"collection":[{"href":"http:\/\/blog.trungson.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.trungson.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.trungson.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.trungson.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=197"}],"version-history":[{"count":0,"href":"http:\/\/blog.trungson.com\/index.php?rest_route=\/wp\/v2\/posts\/197\/revisions"}],"wp:attachment":[{"href":"http:\/\/blog.trungson.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.trungson.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=197"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.trungson.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}