{"id":79554,"date":"2024-10-16T13:15:34","date_gmt":"2024-10-16T05:15:34","guid":{"rendered":"https:\/\/server.hk\/cnblog\/79554\/"},"modified":"2024-10-16T13:15:34","modified_gmt":"2024-10-16T05:15:34","slug":"mysql%e6%8c%87%e4%bb%a4-repeat%ef%bc%88%e9%87%8d%e8%a4%87%e5%9f%b7%e8%a1%8c%e8%aa%9e%e5%8f%a5%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/79554\/","title":{"rendered":"MySQL\u6307\u4ee4: REPEAT\uff08\u91cd\u8907\u57f7\u884c\u8a9e\u53e5\uff09"},"content":{"rendered":"<h1 id=\"mysql%e6%8c%87%e4%bb%a4-repeat%ef%bc%88%e9%87%8d%e8%a4%87%e5%9f%b7%e8%a1%8c%e8%aa%9e%e5%8f%a5%ef%bc%89-bsavYWfPdo\">MySQL\u6307\u4ee4: REPEAT\uff08\u91cd\u8907\u57f7\u884c\u8a9e\u53e5\uff09<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cMySQL\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u958b\u6e90\u8cc7\u6599\u5eab\u7cfb\u7d71\u3002\u5b83\u63d0\u4f9b\u4e86\u591a\u7a2e\u6307\u4ee4\u4f86\u64cd\u4f5c\u548c\u7ba1\u7406\u8cc7\u6599\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u4e2d\u7684REPEAT\u6307\u4ee4\uff0c\u9019\u662f\u4e00\u500b\u7528\u65bc\u91cd\u8907\u57f7\u884c\u8a9e\u53e5\u7684\u529f\u80fd\uff0c\u5c0d\u65bc\u9700\u8981\u91cd\u8907\u57f7\u884c\u67d0\u4e9b\u64cd\u4f5c\u7684\u60c5\u6cc1\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"repeat%e6%8c%87%e4%bb%a4%e6%a6%82%e8%bf%b0-bsavYWfPdo\">REPEAT\u6307\u4ee4\u6982\u8ff0<\/h2>\n<p>REPEAT\u6307\u4ee4\u7684\u4e3b\u8981\u529f\u80fd\u662f\u91cd\u8907\u57f7\u884c\u4e00\u6bb5SQL\u8a9e\u53e5\uff0c\u76f4\u5230\u6eff\u8db3\u7279\u5b9a\u7684\u689d\u4ef6\u70ba\u6b62\u3002\u9019\u5728\u9700\u8981\u9032\u884c\u591a\u6b21\u76f8\u4f3c\u64cd\u4f5c\u6642\uff0c\u53ef\u4ee5\u5927\u5927\u7c21\u5316\u4ee3\u78bc\u7684\u7de8\u5beb\u3002REPEAT\u6307\u4ee4\u901a\u5e38\u8207\u5176\u4ed6\u63a7\u5236\u6d41\u8a9e\u53e5\uff08\u5982IF\u3001WHILE\u7b49\uff09\u7d50\u5408\u4f7f\u7528\uff0c\u4ee5\u5be6\u73fe\u66f4\u8907\u96dc\u7684\u908f\u8f2f\u3002<\/p>\n<h2 id=\"repeat%e7%9a%84%e8%aa%9e%e6%b3%95-bsavYWfPdo\">REPEAT\u7684\u8a9e\u6cd5<\/h2>\n<pre><code>\nREPEAT\n    \nUNTIL \nEND REPEAT;\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u8a9e\u6cd5\u4e2d\uff0c\u662f\u8981\u91cd\u8907\u57f7\u884c\u7684\u8a9e\u53e5\uff0c\u800c\u5247\u662f\u7528\u4f86\u5224\u65b7\u4f55\u6642\u505c\u6b62\u91cd\u8907\u7684\u689d\u4ef6\u3002\u7576\u70ba\u771f\u6642\uff0cREPEAT\u5faa\u74b0\u5c07\u7d42\u6b62\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-bsavYWfPdo\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528REPEAT\u6307\u4ee4\u7684\u7bc4\u4f8b\uff0c\u8a72\u7bc4\u4f8b\u5c07\u5f9e1\u52a0\u523010\u4e26\u8f38\u51fa\u7d50\u679c\uff1a<\/p>\n<pre><code>\nSET @sum = 0;\nSET @i = 1;\n\nREPEAT\n    SET @sum = @sum + @i;\n    SET @i = @i + 1;\nUNTIL @i &gt; 10\nEND REPEAT;\n\nSELECT @sum AS TotalSum;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u521d\u59cb\u5316\u5169\u500b\u8b8a\u6578@sum\u548c@i\u3002\u7136\u5f8c\uff0c\u4f7f\u7528REPEAT\u6307\u4ee4\u4f86\u91cd\u8907\u57f7\u884c\u52a0\u6cd5\u64cd\u4f5c\uff0c\u76f4\u5230@i\u5927\u65bc10\u70ba\u6b62\u3002\u6700\u5f8c\uff0c\u6211\u5011\u9078\u64c7@sum\u7684\u503c\uff0c\u9019\u5c07\u986f\u793a1\u523010\u7684\u7e3d\u548c\u3002<\/p>\n<h2 id=\"repeat%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-bsavYWfPdo\">REPEAT\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p>REPEAT\u6307\u4ee4\u5728\u591a\u7a2e\u60c5\u6cc1\u4e0b\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u61c9\u7528\u5834\u666f\uff1a<\/p>\n<ul>\n<li><strong>\u6279\u91cf\u6578\u64da\u8655\u7406\uff1a<\/strong>\u7576\u9700\u8981\u5c0d\u5927\u91cf\u6578\u64da\u9032\u884c\u76f8\u540c\u7684\u64cd\u4f5c\u6642\uff0cREPEAT\u53ef\u4ee5\u5e6b\u52a9\u7c21\u5316\u4ee3\u78bc\u3002<\/li>\n<li><strong>\u91cd\u8a66\u6a5f\u5236\uff1a<\/strong>\u5728\u67d0\u4e9b\u64cd\u4f5c\u5931\u6557\u7684\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528REPEAT\u4f86\u91cd\u8a66\u8a72\u64cd\u4f5c\uff0c\u76f4\u5230\u6210\u529f\u70ba\u6b62\u3002<\/li>\n<li><strong>\u8a08\u7b97\u548c\u7d71\u8a08\uff1a<\/strong>\u5728\u9700\u8981\u9032\u884c\u591a\u6b21\u8a08\u7b97\u7684\u60c5\u6cc1\u4e0b\uff0cREPEAT\u53ef\u4ee5\u7528\u4f86\u7c21\u5316\u8a08\u7b97\u904e\u7a0b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-bsavYWfPdo\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528REPEAT\u6307\u4ee4\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u80fd\u5920\u5728\u67d0\u500b\u6642\u523b\u8b8a\u70ba\u771f\uff0c\u5426\u5247\u5c07\u5c0e\u81f4\u7121\u9650\u5faa\u74b0\u3002<\/li>\n<li>REPEAT\u6307\u4ee4\u7684\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\uff0c\u7279\u5225\u662f\u5728\u91cd\u8907\u57f7\u884c\u7684\u8a9e\u53e5\u8f03\u70ba\u8907\u96dc\u6642\u3002<\/li>\n<li>\u5728\u4f7f\u7528REPEAT\u6642\uff0c\u61c9\u8a72\u8003\u616e\u5230\u8cc7\u6599\u5eab\u7684\u9396\u5b9a\u548c\u4f75\u767c\u554f\u984c\uff0c\u4ee5\u907f\u514d\u5f71\u97ff\u5176\u4ed6\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bsavYWfPdo\">\u7e3d\u7d50<\/h2>\n<p>REPEAT\u6307\u4ee4\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5728MySQL\u4e2d\u5be6\u73fe\u91cd\u8907\u57f7\u884c\u8a9e\u53e5\u7684\u529f\u80fd\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528REPEAT\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u7c21\u5316\u4ee3\u78bc\uff0c\u63d0\u9ad8\u6548\u7387\u3002\u5728\u9078\u64c7\u5408\u9069\u7684\u4e3b\u6a5f\u74b0\u5883\u6642\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\uff0c\u53ef\u4ee5\u70ba\u60a8\u7684MySQL\u61c9\u7528\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u6307\u4ee4REPEAT\uff0c\u5b78\u7fd2\u5982\u4f55\u91cd\u8907\u57f7\u884c\u8a9e\u53e5\u4ee5\u63d0\u9ad8\u6578\u64da\u8655\u7406\u6548\u7387\u548c\u7c21\u5316\u67e5\u8a62\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-79554","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/79554","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=79554"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/79554\/revisions"}],"predecessor-version":[{"id":79555,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/79554\/revisions\/79555"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=79554"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=79554"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=79554"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}