{"id":4986,"date":"2024-11-14T10:16:26","date_gmt":"2024-11-14T02:16:26","guid":{"rendered":"https:\/\/fwq.ai\/blog\/4986\/"},"modified":"2024-11-14T10:16:26","modified_gmt":"2024-11-14T02:16:26","slug":"oracle%e6%80%8e%e4%b9%88%e7%94%9f%e6%88%90%e9%9a%8f%e6%9c%ba%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/4986\/","title":{"rendered":"oracle\u600e\u4e48\u751f\u6210\u968f\u673a\u6570\u636e"},"content":{"rendered":"<blockquote><p>\n  \u5728 oracle \u4e2d\u751f\u6210\u968f\u673a\u6570\u636e\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\uff1arandom() \u51fd\u6570\uff1a\u751f\u6210 0 \u5230 1 \u4e4b\u95f4\u7684\u968f\u673a\u6d6e\u70b9\u6570\uff0c\u53ef\u7ed3\u5408 mod \u51fd\u6570\u751f\u6210\u6574\u6570\u968f\u673a\u6570\u3002dbms_random \u5305\uff1a\u63d0\u4f9b\u5404\u79cd\u968f\u673a\u6570\u636e\u751f\u6210\u51fd\u6570\uff0c\u5305\u62ec\u6574\u6570\u3001\u5b57\u7b26\u4e32\u548c\u65e5\u671f\u968f\u673a\u751f\u6210\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/21\/2024052108302378727.jpg\" class=\"aligncenter\" title=\"oracle\u600e\u4e48\u751f\u6210\u968f\u673a\u6570\u636e\u63d2\u56fe\" alt=\"oracle\u600e\u4e48\u751f\u6210\u968f\u673a\u6570\u636e\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Oracle \u4e2d\u751f\u6210\u968f\u673a\u6570\u636e<\/strong><\/p>\n<p>\u5728 Oracle \u6570\u636e\u5e93\u4e2d\u751f\u6210\u968f\u673a\u6570\u636e\u662f\u4e00\u4e2a\u5e38\u89c1\u4e14\u6709\u7528\u7684\u64cd\u4f5c\u3002\u5b83\u53ef\u4ee5\u7528\u4e8e\u6d4b\u8bd5\u3001\u586b\u5145\u6d4b\u8bd5\u8868\u6216\u521b\u5efa\u6a21\u62df\u6570\u636e\u3002<\/p>\n<p><strong>\u65b9\u6cd5<\/strong><\/p>\n<p>\u751f\u6210\u968f\u673a\u6570\u636e\u7684\u5e38\u7528\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a<\/p>\n<ul>\n<li> <strong>RANDOM() \u51fd\u6570\uff1a<\/strong>\u751f\u6210 0 \u5230 1 \u4e4b\u95f4\u7684\u968f\u673a\u6570\u3002<\/li>\n<li> <strong>DBMS_RANDOM \u5305\uff1a<\/strong>\u63d0\u4f9b\u751f\u6210\u5404\u79cd\u7c7b\u578b\u968f\u673a\u6570\u636e\u7684\u51fd\u6570\u3002<\/li>\n<\/ul>\n<p><strong>\u4f7f\u7528 RANDOM() \u51fd\u6570<\/strong><\/p>\n<p>RANDOM() \u51fd\u6570\u8fd4\u56de\u4e00\u4e2a 0 \u5230 1 \u4e4b\u95f4\u7684\u4f2a\u968f\u673a\u6d6e\u70b9\u6570\u3002\u8981\u751f\u6210\u6574\u6570\u968f\u673a\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 MOD \u51fd\u6570\u4e0e RANDOM() \u51fd\u6570\u7ed3\u5408\u4f7f\u7528\u3002<\/p>\n<p><strong>\u8bed\u6cd5\uff1a<\/strong><\/p>\n<pre>SELECT MOD(RANDOM() * &lt;max_value&gt;, &lt;max_value&gt;) + 1 FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f8b\u5982\uff1a<\/strong><\/p>\n<pre>SELECT MOD(RANDOM() * 100, 100) + 1 FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u5c06\u751f\u6210\u4e00\u4e2a 1 \u5230 100 \u4e4b\u95f4\u7684\u968f\u673a\u6574\u6570\u3002<\/p>\n<p><strong>\u4f7f\u7528 DBMS_RANDOM \u5305<\/strong><\/p>\n<p>DBMS_RANDOM \u5305\u63d0\u4f9b\u4e86\u4e00\u7ec4\u7528\u4e8e\u751f\u6210\u5404\u79cd\u7c7b\u578b\u968f\u673a\u6570\u636e\u7684\u51fd\u6570\u3002\u8981\u4f7f\u7528 DBMS_RANDOM \u5305\uff0c\u9700\u8981\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n<pre>SELECT DBMS_RANDOM.&lt;function_name&gt;(&lt;parameters&gt;) FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u5e38\u89c1\u7684 DBMS_RANDOM \u51fd\u6570\uff1a<\/strong><\/p>\n<ul>\n<li> <strong>RANDOM()\uff1a<\/strong>\u751f\u6210 0 \u5230 1 \u4e4b\u95f4\u7684\u968f\u673a\u6570\u3002<\/li>\n<li> <strong>RANDOM_INTEGER()\uff1a<\/strong>\u751f\u6210\u6307\u5b9a\u8303\u56f4\u5185\u7684\u968f\u673a\u6574\u6570\u3002<\/li>\n<li> <strong>RANDOM_STRING()\uff1a<\/strong>\u751f\u6210\u6307\u5b9a\u957f\u5ea6\u7684\u968f\u673a\u5b57\u7b26\u4e32\u3002<\/li>\n<li> <strong>RANDOM_DATE()\uff1a<\/strong>\u751f\u6210\u6307\u5b9a\u8303\u56f4\u5185\u7684\u968f\u673a\u65e5\u671f\u3002<\/li>\n<\/ul>\n<p><strong>\u4f8b\u5982\uff1a<\/strong><\/p>\n<pre>SELECT DBMS_RANDOM.RANDOM_INTEGER('1', '100') FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u5c06\u751f\u6210\u4e00\u4e2a 1 \u5230 100 \u4e4b\u95f4\u7684\u968f\u673a\u6574\u6570\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u751f\u6210\u968f\u673a\u6570\u636e\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 oracle \u4e2d\u751f\u6210\u968f\u673a\u6570\u636e\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\uff1arandom() \u51fd\u6570\uff1a\u751f\u6210 0 \u5230 1 \u4e4b\u95f4\u7684\u968f\u673a\u6d6e\u70b9\u6570\uff0c\u53ef\u7ed3\u5408 mod \u51fd\u6570\u751f\u6210\u6574\u6570\u968f\u673a\u6570\u3002dbms_random \u5305\uff1a\u63d0\u4f9b\u5404\u79cd\u968f\u673a\u6570\u636e\u751f\u6210\u51fd\u6570\uff0c\u5305\u62ec\u6574\u6570\u3001\u5b57\u7b26\u4e32\u548c\u65e5\u671f\u968f\u673a\u751f\u6210\u3002 \u5982\u4f55\u5728 Oracle \u4e2d\u751f\u6210\u968f\u673a\u6570\u636e \u5728 Oracle \u6570\u636e\u5e93\u4e2d\u751f\u6210\u968f\u673a\u6570\u636e\u662f\u4e00\u4e2a\u5e38\u89c1\u4e14\u6709\u7528\u7684\u64cd\u4f5c\u3002\u5b83\u53ef\u4ee5\u7528\u4e8e\u6d4b\u8bd5\u3001\u586b\u5145\u6d4b\u8bd5\u8868\u6216\u521b\u5efa\u6a21\u62df\u6570\u636e\u3002 \u65b9\u6cd5 \u751f\u6210\u968f\u673a\u6570\u636e\u7684\u5e38\u7528\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a RANDOM() \u51fd\u6570\uff1a\u751f\u6210 0 \u5230 1 \u4e4b\u95f4\u7684\u968f\u673a\u6570\u3002 DBMS_RANDOM \u5305\uff1a\u63d0\u4f9b\u751f\u6210\u5404\u79cd\u7c7b\u578b\u968f\u673a\u6570\u636e\u7684\u51fd\u6570\u3002 \u4f7f\u7528 RANDOM() \u51fd\u6570 RANDOM() \u51fd\u6570\u8fd4\u56de\u4e00\u4e2a 0 \u5230 1 \u4e4b\u95f4\u7684\u4f2a\u968f\u673a\u6d6e\u70b9\u6570\u3002\u8981\u751f\u6210\u6574\u6570\u968f\u673a\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 MOD \u51fd\u6570\u4e0e RANDOM() \u51fd\u6570\u7ed3\u5408\u4f7f\u7528\u3002 \u8bed\u6cd5\uff1a SELECT MOD(RANDOM() * &lt;max_value&gt;, &lt;max_value&gt;) + 1 FROM dual; \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff1a SELECT MOD(RANDOM() * [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-4986","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/4986","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=4986"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/4986\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=4986"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=4986"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=4986"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}