{"id":4994,"date":"2024-11-14T09:54:52","date_gmt":"2024-11-14T01:54:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/4994\/"},"modified":"2024-11-14T09:54:52","modified_gmt":"2024-11-14T01:54:52","slug":"oracle%e4%b8%bb%e9%94%ae%e5%86%b2%e7%aa%81%e6%80%8e%e4%b9%88%e5%8a%9e","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/4994\/","title":{"rendered":"oracle\u4e3b\u952e\u51b2\u7a81\u600e\u4e48\u529e"},"content":{"rendered":"<blockquote><p>\n  \u5728 oracle \u4e2d\u5904\u7406\u4e3b\u952e\u51b2\u7a81\u7684\u65b9\u6cd5\u6709\uff1a1. \u5ffd\u7565\u51b2\u7a81\uff1b2. \u629b\u51fa\u5f02\u5e38\uff1b3. \u4f7f\u7528\u89e6\u53d1\u5668\u68c0\u67e5\u6570\u636e\uff1b4. \u521b\u5efa\u552f\u4e00\u7d22\u5f15\u3002\u6700\u4f73\u5b9e\u8df5\uff1a\u5173\u952e\u6570\u636e\u4f7f\u7528 unique \u6216 primary key \u7ea6\u675f\u5e76\u5f15\u53d1\u5f02\u5e38\uff1b\u975e\u5173\u952e\u6570\u636e\u53ef\u8003\u8651\u4f7f\u7528 ignore \u9009\u9879\u6216\u89e6\u53d1\u5668\uff1b\u552f\u4e00\u7d22\u5f15\u8f7b\u91cf\u7ea7\uff0c\u4f46\u5927\u91cf\u6570\u636e\u63d2\u5165\u65f6\u53ef\u80fd\u5f71\u54cd\u6027\u80fd\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/21\/2024052109181858948.jpg\" class=\"aligncenter\" title=\"oracle\u4e3b\u952e\u51b2\u7a81\u600e\u4e48\u529e\u63d2\u56fe\" alt=\"oracle\u4e3b\u952e\u51b2\u7a81\u600e\u4e48\u529e\u63d2\u56fe\" \/><\/p>\n<p><strong>Oracle \u4e3b\u952e\u51b2\u7a81\u5904\u7406<\/strong><\/p>\n<p>\u5728 Oracle \u6570\u636e\u5e93\u4e2d\uff0c\u4e3b\u952e\u7ea6\u675f\u7528\u4e8e\u786e\u4fdd\u8868\u4e2d\u6bcf\u884c\u7684\u7279\u5b9a\u5217\u6216\u5217\u7ec4\u5177\u6709\u552f\u4e00\u503c\u3002\u5f53\u63d2\u5165\u6216\u66f4\u65b0\u8fdd\u53cd\u4e3b\u952e\u7ea6\u675f\u7684\u6570\u636e\u65f6\uff0c\u4f1a\u53d1\u751f\u4e3b\u952e\u51b2\u7a81\u3002<\/p>\n<p><strong>\u5904\u7406\u4e3b\u952e\u51b2\u7a81\u7684\u65b9\u5f0f<\/strong><\/p>\n<p>\u6709\u51e0\u79cd\u5904\u7406\u4e3b\u952e\u51b2\u7a81\u7684\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u5ffd\u7565\u51b2\u7a81<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 INSERT IGNORE \u8bed\u53e5\uff0c\u8be5\u8bed\u53e5\u5c06\u5ffd\u7565\u8fdd\u53cd\u552f\u4e00\u7ea6\u675f\u7684\u63d2\u5165\u64cd\u4f5c\u3002<\/li>\n<li>\u4f7f\u7528 UPDATE IGNORE \u8bed\u53e5\uff0c\u8be5\u8bed\u53e5\u5c06\u5ffd\u7565\u8fdd\u53cd\u552f\u4e00\u7ea6\u675f\u7684\u66f4\u65b0\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p><strong>2. \u629b\u51fa\u5f02\u5e38<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 UNIQUE \u7ea6\u675f\uff0c\u5f53\u8fdd\u53cd\u552f\u4e00\u7ea6\u675f\u65f6\uff0c\u8be5\u7ea6\u675f\u5c06\u5f15\u53d1\u5f02\u5e38\u3002<\/li>\n<li>\u4f7f\u7528 PRIMARY KEY \u7ea6\u675f\uff0c\u8be5\u7ea6\u675f\u4e5f\u5c06\u5f15\u53d1\u5f02\u5e38\u3002<\/li>\n<\/ul>\n<p><strong>3. \u89e6\u53d1\u5668<\/strong><\/p>\n<ul>\n<li>\u521b\u5efa\u4e00\u4e2a BEFORE INSERT \u6216 BEFORE UPDATE \u89e6\u53d1\u5668\uff0c\u4ee5\u68c0\u67e5\u65b0\u6570\u636e\u662f\u5426\u4f1a\u8fdd\u53cd\u4e3b\u952e\u7ea6\u675f\u3002<\/li>\n<li>\u5982\u679c\u68c0\u6d4b\u5230\u8fdd\u89c4\uff0c\u89e6\u53d1\u5668\u53ef\u4ee5\u7ec8\u6b62\u64cd\u4f5c\u6216\u6267\u884c\u5176\u4ed6\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p><strong>4. \u552f\u4e00\u7d22\u5f15<\/strong><\/p>\n<ul>\n<li>\u521b\u5efa\u4e00\u4e2a\u552f\u4e00\u7d22\u5f15\uff0c\u8be5\u7d22\u5f15\u53ef\u4ee5\u9632\u6b62\u63d2\u5165\u5177\u6709\u91cd\u590d\u503c\u7684\u8bb0\u5f55\u3002<\/li>\n<li>\u4e0e\u4e3b\u952e\u7ea6\u675f\u4e0d\u540c\uff0c\u552f\u4e00\u7d22\u5f15\u4e0d\u4f1a\u5f15\u53d1\u5f02\u5e38\u3002<\/li>\n<\/ul>\n<p><strong>\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n<p>\u5728\u9009\u62e9\u4e3b\u952e\u51b2\u7a81\u5904\u7406\u65b9\u6cd5\u65f6\uff0c\u8bf7\u8003\u8651\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a<\/p>\n<ul>\n<li>\u5bf9\u4e8e\u5173\u952e\u6570\u636e\uff0c\u4f7f\u7528 UNIQUE \u6216 PRIMARY KEY \u7ea6\u675f\u5e76\u5f15\u53d1\u5f02\u5e38\u3002<\/li>\n<li>\u5bf9\u4e8e\u975e\u5173\u952e\u6570\u636e\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528 IGNORE \u9009\u9879\u6216\u89e6\u53d1\u5668\u3002<\/li>\n<li>\u552f\u4e00\u7d22\u5f15\u662f\u6700\u8f7b\u91cf\u7ea7\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u4f46\u5728\u63d2\u5165\u5927\u91cf\u6570\u636e\u65f6\u53ef\u80fd\u4f1a\u964d\u4f4e\u6027\u80fd\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u4e3b\u952e\u51b2\u7a81\u600e\u4e48\u529e\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\u5904\u7406\u4e3b\u952e\u51b2\u7a81\u7684\u65b9\u6cd5\u6709\uff1a1. \u5ffd\u7565\u51b2\u7a81\uff1b2. \u629b\u51fa\u5f02\u5e38\uff1b3. \u4f7f\u7528\u89e6\u53d1\u5668\u68c0\u67e5\u6570\u636e\uff1b4. \u521b\u5efa\u552f\u4e00\u7d22\u5f15\u3002\u6700\u4f73\u5b9e\u8df5\uff1a\u5173\u952e\u6570\u636e\u4f7f\u7528 unique \u6216 primary key \u7ea6\u675f\u5e76\u5f15\u53d1\u5f02\u5e38\uff1b\u975e\u5173\u952e\u6570\u636e\u53ef\u8003\u8651\u4f7f\u7528 ignore \u9009\u9879\u6216\u89e6\u53d1\u5668\uff1b\u552f\u4e00\u7d22\u5f15\u8f7b\u91cf\u7ea7\uff0c\u4f46\u5927\u91cf\u6570\u636e\u63d2\u5165\u65f6\u53ef\u80fd\u5f71\u54cd\u6027\u80fd\u3002 Oracle \u4e3b\u952e\u51b2\u7a81\u5904\u7406 \u5728 Oracle \u6570\u636e\u5e93\u4e2d\uff0c\u4e3b\u952e\u7ea6\u675f\u7528\u4e8e\u786e\u4fdd\u8868\u4e2d\u6bcf\u884c\u7684\u7279\u5b9a\u5217\u6216\u5217\u7ec4\u5177\u6709\u552f\u4e00\u503c\u3002\u5f53\u63d2\u5165\u6216\u66f4\u65b0\u8fdd\u53cd\u4e3b\u952e\u7ea6\u675f\u7684\u6570\u636e\u65f6\uff0c\u4f1a\u53d1\u751f\u4e3b\u952e\u51b2\u7a81\u3002 \u5904\u7406\u4e3b\u952e\u51b2\u7a81\u7684\u65b9\u5f0f \u6709\u51e0\u79cd\u5904\u7406\u4e3b\u952e\u51b2\u7a81\u7684\u65b9\u6cd5\uff1a 1. \u5ffd\u7565\u51b2\u7a81 \u4f7f\u7528 INSERT IGNORE \u8bed\u53e5\uff0c\u8be5\u8bed\u53e5\u5c06\u5ffd\u7565\u8fdd\u53cd\u552f\u4e00\u7ea6\u675f\u7684\u63d2\u5165\u64cd\u4f5c\u3002 \u4f7f\u7528 UPDATE IGNORE \u8bed\u53e5\uff0c\u8be5\u8bed\u53e5\u5c06\u5ffd\u7565\u8fdd\u53cd\u552f\u4e00\u7ea6\u675f\u7684\u66f4\u65b0\u64cd\u4f5c\u3002 2. \u629b\u51fa\u5f02\u5e38 \u4f7f\u7528 UNIQUE \u7ea6\u675f\uff0c\u5f53\u8fdd\u53cd\u552f\u4e00\u7ea6\u675f\u65f6\uff0c\u8be5\u7ea6\u675f\u5c06\u5f15\u53d1\u5f02\u5e38\u3002 \u4f7f\u7528 PRIMARY KEY \u7ea6\u675f\uff0c\u8be5\u7ea6\u675f\u4e5f\u5c06\u5f15\u53d1\u5f02\u5e38\u3002 3. \u89e6\u53d1\u5668 \u521b\u5efa\u4e00\u4e2a BEFORE INSERT \u6216 BEFORE UPDATE \u89e6\u53d1\u5668\uff0c\u4ee5\u68c0\u67e5\u65b0\u6570\u636e\u662f\u5426\u4f1a\u8fdd\u53cd\u4e3b\u952e\u7ea6\u675f\u3002 \u5982\u679c\u68c0\u6d4b\u5230\u8fdd\u89c4\uff0c\u89e6\u53d1\u5668\u53ef\u4ee5\u7ec8\u6b62\u64cd\u4f5c\u6216\u6267\u884c\u5176\u4ed6\u64cd\u4f5c\u3002 4. \u552f\u4e00\u7d22\u5f15 \u521b\u5efa\u4e00\u4e2a\u552f\u4e00\u7d22\u5f15\uff0c\u8be5\u7d22\u5f15\u53ef\u4ee5\u9632\u6b62\u63d2\u5165\u5177\u6709\u91cd\u590d\u503c\u7684\u8bb0\u5f55\u3002 \u4e0e\u4e3b\u952e\u7ea6\u675f\u4e0d\u540c\uff0c\u552f\u4e00\u7d22\u5f15\u4e0d\u4f1a\u5f15\u53d1\u5f02\u5e38\u3002 \u6700\u4f73\u5b9e\u8df5 [&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-4994","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/4994","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=4994"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/4994\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=4994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=4994"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=4994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}