{"id":179204,"date":"2024-11-08T23:52:19","date_gmt":"2024-11-08T15:52:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179204\/"},"modified":"2024-11-08T23:52:19","modified_gmt":"2024-11-08T15:52:19","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e6%94%b9-oracle-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84-sequence-%e5%ba%8f%e5%88%97%ef%bc%9f-%e4%bf%ae%e6%94%b9%e6%95%b8%e6%93%9a%e5%ba%ab-sequence","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179204\/","title":{"rendered":"\u5982\u4f55\u4fee\u6539 Oracle \u6578\u64da\u5eab\u7684 sequence \u5e8f\u5217\uff1f (\u4fee\u6539\u6578\u64da\u5eab sequence)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e6%94%b9-oracle-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84-sequence-%e5%ba%8f%e5%88%97%ef%bc%9f-eUeBMFLHmX\">\u5982\u4f55\u4fee\u6539 Oracle \u6578\u64da\u5eab\u7684 sequence \u5e8f\u5217\uff1f<\/h1>\n<p>\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0csequence \u662f\u4e00\u7a2e\u7528\u65bc\u751f\u6210\u552f\u4e00\u6578\u5b57\u7684\u6578\u64da\u7d50\u69cb\uff0c\u901a\u5e38\u7528\u65bc\u4e3b\u9375\u7684\u81ea\u52d5\u589e\u9577\u3002\u96a8\u8457\u61c9\u7528\u7a0b\u5e8f\u7684\u767c\u5c55\uff0c\u53ef\u80fd\u9700\u8981\u5c0d\u73fe\u6709\u7684 sequence \u9032\u884c\u4fee\u6539\uff0c\u4ee5\u6eff\u8db3\u65b0\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4fee\u6539 Oracle \u6578\u64da\u5eab\u4e2d\u7684 sequence\uff0c\u5305\u62ec\u4fee\u6539\u540d\u7a31\u3001\u589e\u91cf\u3001\u6700\u5c0f\u503c\u3001\u6700\u5927\u503c\u7b49\u5c6c\u6027\u3002<\/p>\n<h2 id=\"1-%e4%ba%86%e8%a7%a3-sequence-%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-eUeBMFLHmX\">1. \u4e86\u89e3 Sequence \u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728\u6df1\u5165\u4fee\u6539\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3 sequence \u7684\u57fa\u672c\u6982\u5ff5\u3002Oracle \u7684 sequence \u662f\u4e00\u500b\u6578\u5b57\u751f\u6210\u5668\uff0c\u901a\u5e38\u7528\u65bc\u751f\u6210\u552f\u4e00\u7684\u6574\u6578\u503c\u3002\u6bcf\u6b21\u8abf\u7528 sequence \u6642\uff0c\u5b83\u6703\u8fd4\u56de\u4e00\u500b\u65b0\u7684\u6578\u5b57\uff0c\u9019\u4e9b\u6578\u5b57\u662f\u6839\u64da\u5b9a\u7fa9\u7684\u589e\u91cf\u81ea\u52d5\u751f\u6210\u7684\u3002<\/p>\n<h2 id=\"2-%e6%9f%a5%e7%9c%8b%e7%8f%be%e6%9c%89%e7%9a%84-sequence-eUeBMFLHmX\">2. \u67e5\u770b\u73fe\u6709\u7684 Sequence<\/h2>\n<p>\u5728\u4fee\u6539 sequence \u4e4b\u524d\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u67e5\u770b\u7576\u524d\u7684 sequence \u8a2d\u7f6e\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u67e5\u770b\u6240\u6709 sequence \u7684\u8a73\u7d30\u4fe1\u606f\uff1a<\/p>\n<pre><code>SELECT sequence_name, min_value, max_value, increment_by, last_number, cycle_flag \nFROM user_sequences;<\/code><\/pre>\n<p>\u9019\u5c07\u986f\u793a\u6240\u6709\u5c6c\u65bc\u7576\u524d\u7528\u6236\u7684 sequence \u53ca\u5176\u5c6c\u6027\u3002<\/p>\n<h2 id=\"3-%e4%bf%ae%e6%94%b9-sequence-%e7%9a%84%e5%b1%ac%e6%80%a7-eUeBMFLHmX\">3. \u4fee\u6539 Sequence \u7684\u5c6c\u6027<\/h2>\n<p>\u5728 Oracle \u4e2d\uff0c\u60a8\u7121\u6cd5\u76f4\u63a5\u4fee\u6539\u5df2\u5b58\u5728\u7684 sequence \u7684\u5c6c\u6027\u3002\u76f8\u53cd\uff0c\u60a8\u9700\u8981\u5148\u522a\u9664\u73fe\u6709\u7684 sequence\uff0c\u7136\u5f8c\u91cd\u65b0\u5275\u5efa\u4e00\u500b\u65b0\u7684 sequence\u3002\u4ee5\u4e0b\u662f\u4fee\u6539 sequence \u7684\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"3-1-%e5%88%aa%e9%99%a4%e7%8f%be%e6%9c%89%e7%9a%84-sequence-eUeBMFLHmX\">3.1 \u522a\u9664\u73fe\u6709\u7684 Sequence<\/h3>\n<p>\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u522a\u9664\u73fe\u6709\u7684 sequence\uff1a<\/p>\n<pre><code>DROP SEQUENCE sequence_name;<\/code><\/pre>\n<p>\u8acb\u5c07 <code>sequence_name<\/code> \u66ff\u63db\u70ba\u60a8\u8981\u522a\u9664\u7684 sequence \u540d\u7a31\u3002<\/p>\n<h3 id=\"3-2-%e5%89%b5%e5%bb%ba%e6%96%b0%e7%9a%84-sequence-eUeBMFLHmX\">3.2 \u5275\u5efa\u65b0\u7684 Sequence<\/h3>\n<p>\u522a\u9664 sequence \u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u5275\u5efa\u4e00\u500b\u65b0\u7684 sequence\uff0c\u4e26\u8a2d\u7f6e\u6240\u9700\u7684\u5c6c\u6027\uff1a<\/p>\n<pre><code>CREATE SEQUENCE new_sequence_name\nSTART WITH 1\nINCREMENT BY 1\nMINVALUE 1\nMAXVALUE 1000\nCYCLE;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c\u60a8\u53ef\u4ee5\u6839\u64da\u9700\u8981\u8abf\u6574 <code>START WITH<\/code>\u3001<code>INCREMENT BY<\/code>\u3001<code>MINVALUE<\/code> \u548c <code>MAXVALUE<\/code> \u7684\u503c\u3002<code>CYCLE<\/code> \u53c3\u6578\u8868\u793a\u7576\u9054\u5230\u6700\u5927\u503c\u5f8c\u662f\u5426\u91cd\u65b0\u958b\u59cb\u3002<\/p>\n<h2 id=\"4-%e4%bf%ae%e6%94%b9-sequence-%e7%9a%84%e5%85%b6%e4%bb%96%e5%b1%ac%e6%80%a7-eUeBMFLHmX\">4. \u4fee\u6539 Sequence \u7684\u5176\u4ed6\u5c6c\u6027<\/h2>\n<p>\u5982\u679c\u60a8\u53ea\u9700\u8981\u4fee\u6539\u67d0\u4e9b\u5c6c\u6027\u800c\u4e0d\u60f3\u522a\u9664\u548c\u91cd\u65b0\u5275\u5efa sequence\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 <code>ALTER SEQUENCE<\/code> \u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u4fee\u6539\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"4-1-%e4%bf%ae%e6%94%b9%e5%a2%9e%e9%87%8f-eUeBMFLHmX\">4.1 \u4fee\u6539\u589e\u91cf<\/h3>\n<pre><code>ALTER SEQUENCE sequence_name INCREMENT BY 5;<\/code><\/pre>\n<h3 id=\"4-2-%e4%bf%ae%e6%94%b9%e6%9c%80%e5%b0%8f%e5%80%bc%e5%92%8c%e6%9c%80%e5%a4%a7%e5%80%bc-eUeBMFLHmX\">4.2 \u4fee\u6539\u6700\u5c0f\u503c\u548c\u6700\u5927\u503c<\/h3>\n<pre><code>ALTER SEQUENCE sequence_name\nMINVALUE 10\nMAXVALUE 5000;<\/code><\/pre>\n<h3 id=\"4-3-%e4%bf%ae%e6%94%b9%e5%be%aa%e7%92%b0%e6%a8%99%e8%aa%8c-eUeBMFLHmX\">4.3 \u4fee\u6539\u5faa\u74b0\u6a19\u8a8c<\/h3>\n<pre><code>ALTER SEQUENCE sequence_name NOCYCLE;<\/code><\/pre>\n<h2 id=\"5-%e7%b8%bd%e7%b5%90-eUeBMFLHmX\">5. \u7e3d\u7d50<\/h2>\n<p>\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0c\u4fee\u6539 sequence \u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\u3002\u60a8\u53ef\u4ee5\u9078\u64c7\u522a\u9664\u4e26\u91cd\u65b0\u5275\u5efa sequence\uff0c\u6216\u8005\u4f7f\u7528 <code>ALTER SEQUENCE<\/code> \u8a9e\u53e5\u4f86\u8abf\u6574\u73fe\u6709\u7684\u5c6c\u6027\u3002\u7121\u8ad6\u60a8\u9078\u64c7\u54ea\u7a2e\u65b9\u6cd5\uff0c\u4e86\u89e3 sequence \u7684\u57fa\u672c\u6982\u5ff5\u548c\u64cd\u4f5c\u6b65\u9a5f\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u61c9\u7528\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4fee\u6539 Oracle \u6578\u64da\u5eab\u4e2d\u7684 sequence \u5e8f\u5217\uff0c\u5305\u62ec\u589e\u6e1b\u6b65\u9577\u3001\u91cd\u7f6e\u8d77\u59cb\u503c\u53ca\u5176\u4ed6\u76f8\u95dc\u64cd\u4f5c\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-179204","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179204","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=179204"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179204\/revisions"}],"predecessor-version":[{"id":179205,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179204\/revisions\/179205"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}