{"id":200863,"date":"2025-05-06T08:53:35","date_gmt":"2025-05-06T00:53:35","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200863\/"},"modified":"2025-05-06T08:53:35","modified_gmt":"2025-05-06T00:53:35","slug":"mysql-%e5%ad%98%e5%82%a8%e8%bf%87%e7%a8%8b%e4%bc%a0%e5%85%a5%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%8f%82%e6%95%b0%e6%8a%a5%e9%94%99%ef%bc%9a%e4%b8%ba%e4%bb%80%e4%b9%88%e4%bc%a0%e5%85%a5%e5%ad%97%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200863\/","title":{"rendered":"MySQL \u5b58\u50a8\u8fc7\u7a0b\u4f20\u5165\u5b57\u7b26\u4e32\u53c2\u6570\u62a5\u9519\uff1a\u4e3a\u4ec0\u4e48\u4f20\u5165\u5b57\u7b26\u4e32\u4f1a\u62a5\u9519\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MySQL \u5b58\u50a8\u8fc7\u7a0b\u4f20\u5165\u5b57\u7b26\u4e32\u53c2\u6570\u62a5\u9519\uff1a\u4e3a\u4ec0\u4e48\u4f20\u5165\u5b57\u7b26\u4e32\u4f1a\u62a5\u9519\uff1f<\/h1>\n<p>\u76ee\u524d\u4e3b\u673a\u5b9d\u8d1d\u4e0a\u5df2\u7ecf\u6709\u5f88\u591a\u5173\u4e8e\u7684\u6587\u7ae0\u4e86\uff0c\u81ea\u5df1\u5728\u521d\u6b21\u9605\u8bfb\u8fd9\u4e9b\u6587\u7ae0\u4e2d\uff0c\u4e5f\u89c1\u8bc6\u5230\u4e86\u5f88\u591a\u5b66\u4e60\u601d\u8def\uff1b\u90a3\u4e48\u672c\u6587\uff0c\u4e5f\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff0c\u5982\u679c\u9605\u8bfb\u5b8c\u540e\u771f\u7684\u5bf9\u4f60\u5b66\u4e60\u6709\u5e2e\u52a9\uff0c\u6b22\u8fce\u52a8\u52a8\u624b\u6307\uff0c\u8bc4\u8bba\u7559\u8a00\u5e76\u5206\u4eab~<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241118\/1731895418673aa07a93d2e.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>mysql \u5b58\u50a8\u8fc7\u7a0b\u53c2\u6570\u4f20\u5165\u5b57\u7b26\u4e32\u62a5\u9519<\/strong><\/p>\n<p>\u5728\u521b\u5efa\u4e86\u4e00\u4e2a\u5982\u4e0b\u6240\u793a\u7684 mysql \u5b58\u50a8\u8fc7\u7a0b\u540e\uff0c\u4f60\u4f1a\u9047\u5230\u4e00\u4e2a\u9519\u8bef\uff1a<\/p>\n<pre>create procedure mypo02(in dataname varchar(10))\n  begin\n  if dataname is null or dataname = \"\" then\n      select * from ssd;\n  else\n      select * from ssd where ename like concat('%',dataname,'%');\n  end if;\nend;<\/pre>\n<p>\u9519\u8bef\u4fe1\u606f\u4e3a\uff1a<\/p>\n<pre>procedure execution failed\n1054 - unknown column '\u738b\u5c0f\u674e' in 'field list'<\/pre>\n<p>\u95ee\u9898\u5728\u4e8e\uff1a\u8c03\u7528\u5b58\u50a8\u8fc7\u7a0b\u65f6\u4f20\u5165\u7684 dataname \u53c2\u6570\u7c7b\u578b\u4e0d\u5339\u914d\u3002<\/p>\n<p>\u5f53 dataname \u53c2\u6570\u4e3a\u6574\u578b\u65f6\uff0c\u5b58\u50a8\u8fc7\u7a0b\u53ef\u4ee5\u6b63\u5e38\u8fd0\u884c\u3002\u4f46\u5f53 dataname \u53c2\u6570\u4e3a\u5b57\u7b26\u4e32\u65f6\uff0c\u7531\u4e8e where \u5b50\u53e5\u4e2d\u7684\u5b57\u6bb5\u7c7b\u578b\u4e3a\u6574\u578b\uff0c\u5c31\u4f1a\u5bfc\u81f4\u9519\u8bef\u3002<\/p>\n<p>\u8981\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u4f60\u9700\u8981\u786e\u4fdd\u8c03\u7528\u5b58\u50a8\u8fc7\u7a0b\u65f6\u4f20\u5165\u7684\u53c2\u6570\u7c7b\u578b\u4e0e\u5b58\u50a8\u8fc7\u7a0b\u5b9a\u4e49\u4e2d\u6307\u5b9a\u7684\u7c7b\u578b\u76f8\u5339\u914d\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u4f60\u9700\u8981\u5c06 dataname \u6539\u4e3a\u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>call mypo02('\u738b\u5c0f\u674e')<\/pre>\n<p>\u5982\u679c\u95ee\u9898\u4ecd\u7136\u5b58\u5728\uff0c\u8bf7\u63d0\u4f9b\u66f4\u8be6\u7ec6\u7684\u9519\u8bef\u4fe1\u606f\u6216\u4ee3\u7801\u7247\u6bb5\uff0c\u4ee5\u4fbf\u8fdb\u4e00\u6b65\u5206\u6790\u89e3\u51b3\u3002<\/p>\n<p>\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300aMySQL \u5b58\u50a8\u8fc7\u7a0b\u4f20\u5165\u5b57\u7b26\u4e32\u53c2\u6570\u62a5\u9519\uff1a\u4e3a\u4ec0\u4e48\u4f20\u5165\u5b57\u7b26\u4e32\u4f1a\u62a5\u9519\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6570\u636e\u5e93\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>MySQL \u5b58\u50a8\u8fc7\u7a0b\u4f20\u5165\u5b57\u7b26\u4e32\u53c2&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200863","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200863","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200863"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200863\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200863"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200863"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}