{"id":15919,"date":"2023-12-04T23:49:41","date_gmt":"2023-12-04T15:49:41","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=15919"},"modified":"2023-12-05T00:03:50","modified_gmt":"2023-12-04T16:03:50","slug":"oracle-zhong-cha-xun-suo-you-de-gong-zuo-zhong-lei","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/oracle-zhong-cha-xun-suo-you-de-gong-zuo-zhong-lei\/","title":{"rendered":"Oracle \u4e2d\u67e5\u8be2\u6240\u6709\u7684\u5de5\u4f5c\u79cd\u7c7b\uff1f"},"content":{"rendered":"<p>\u8981\u67e5\u8be2 Oracle \u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u5de5\u4f5c\u79cd\u7c7b\uff08Job Types\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8be2\u8bed\u53e5\uff1a<\/p>\n<pre><code class=\"language-sql  line-numbers\">SELECT DISTINCT job\nFROM emp;\n<\/code><\/pre>\n<p>\u8fd9\u662f\u4e00\u4e2a\u793a\u4f8b\u67e5\u8be2\uff0c\u5047\u8bbe\u4f60\u60f3\u4ece\u540d\u4e3a &#8220;emp&#8221; \u7684\u8868\u4e2d\u83b7\u53d6\u5de5\u4f5c\u79cd\u7c7b\u3002\u8bf7\u6839\u636e\u5b9e\u9645\u7684\u6570\u636e\u5e93\u8868\u7ed3\u6784\u548c\u6570\u636e\u4fee\u6539\u67e5\u8be2\u8bed\u53e5\u3002\u5728\u8fd9\u4e2a\u67e5\u8be2\u4e2d\uff0c\u4f7f\u7528\u4e86 <code>DISTINCT<\/code> \u5173\u952e\u5b57\uff0c\u4ee5\u786e\u4fdd\u8fd4\u56de\u7684\u7ed3\u679c\u4e2d\u4e0d\u5305\u542b\u91cd\u590d\u7684\u5de5\u4f5c\u79cd\u7c7b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8981\u67e5\u8be2 Oracle \u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u5de5\u4f5c\u79cd\u7c7b\uff08Job Types\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8be2\u8bed\u53e5\uff1a SELE [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[],"class_list":["post-15919","post","type-post","status-publish","format-standard","hentry","category-oracel"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15919","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=15919"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15919\/revisions"}],"predecessor-version":[{"id":15920,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15919\/revisions\/15920"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=15919"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=15919"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=15919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}