{"id":200500,"date":"2025-05-06T11:22:52","date_gmt":"2025-05-06T03:22:52","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200500\/"},"modified":"2025-05-06T11:22:52","modified_gmt":"2025-05-06T03:22:52","slug":"mybatis-%e5%8a%a8%e6%80%81-sql-%e6%9f%a5%e8%af%a2%e4%b8%ad%ef%bc%8c%e5%a6%82%e4%bd%95%e4%bc%98%e5%8c%96%e5%8c%85%e5%90%ab%e5%a4%9a%e4%b8%aa%e6%9d%a1%e4%bb%b6%e4%b8%94%e4%bd%bf%e7%94%a8-or-%e8%bf%9e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200500\/","title":{"rendered":"Mybatis \u52a8\u6001 SQL \u67e5\u8be2\u4e2d\uff0c\u5982\u4f55\u4f18\u5316\u5305\u542b\u591a\u4e2a\u6761\u4ef6\u4e14\u4f7f\u7528 or \u8fde\u63a5\u7684\u67e5\u8be2\u8bed\u53e5\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>Mybatis \u52a8\u6001 SQL \u67e5\u8be2\u4e2d\uff0c\u5982\u4f55\u4f18\u5316\u5305\u542b\u591a\u4e2a\u6761\u4ef6\u4e14\u4f7f\u7528 or \u8fde\u63a5\u7684\u67e5\u8be2\u8bed\u53e5\uff1f<\/h1>\n<p>\u4eca\u65e5\u4e0d\u80af\u57cb\u5934\uff0c\u660e\u65e5\u4f55\u4ee5\u62ac\u5934\uff01\u6bcf\u65e5\u4e00\u53e5\u52aa\u529b\u81ea\u5df1\u7684\u8bdd\u54c8\u54c8~\u54c8\u55bd\uff0c\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\uff0c\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u89e3\u7b49\u7b49\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u6536\u85cf\u6216\u8005\u6709\u66f4\u597d\u7684\u5efa\u8bae\u5728\u8bc4\u8bba\u63d0\u51fa\uff0c\u6211\u90fd\u4f1a\u8ba4\u771f\u770b\u7684\uff01\u5927\u5bb6\u4e00\u8d77\u8fdb\u6b65\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241106\/1730895341672b5dedc9acc.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>mybatis\u52a8\u6001sql\u67e5\u8be2\u4f18\u5316<\/strong><\/p>\n<p>\u5728\u4f7f\u7528mybatis\u52a8\u6001sql\u65f6\uff0c\u5982\u4f55\u4f18\u5316\u4ee5\u4e0b\u67e5\u8be2\uff1f<\/p>\n<pre>select * from table a where a.project_id=#{projectid} and a.id != #{id} and a.status=3 and a.id_card = #{code} or a.unit_code = #{code}<\/pre>\n<p><strong>\u89e3\u7b54\uff1a<\/strong><\/p>\n<p>\u4f18\u5316\u540e\u7684\u67e5\u8be2\u8bed\u53e5\u5982\u4e0b\uff1a<\/p>\n<pre>select * from table a \n&lt;where&gt;\n a.project_id=#{projectId}\n and a.id != #{id}\n and a.status=3 \n&lt;choose&gt;\n    &lt;when test=\"type == idCard\"&gt; \n        and a.id_card = #{code}\n    &lt;\/when&gt;\n&lt;when test=\"type == unitCode\"&gt;and a.unit_code = #{code}&lt;\/when&gt;\n    &lt;otherwise&gt;  \n    &lt;\/otherwise&gt;  \n&lt;\/choose&gt;\n&lt;\/where&gt;<\/pre>\n<p><strong>\u539f\u56e0\uff1a<\/strong><\/p>\n<p>\u539f\u67e5\u8be2\u8bed\u53e5\u4e2d\u4f7f\u7528 or \u6761\u4ef6\u8fde\u63a5\u4e24\u4e2a if \u6761\u4ef6\uff0c\u4f1a\u5bfc\u81f4\u62fc\u63a5\u5230 sql \u65f6\u7684\u8bed\u6cd5\u9519\u8bef\u3002\u4f18\u5316\u540e\u7684\u67e5\u8be2\u8bed\u53e5\u4f7f\u7528 choose when otherwise \u8bed\u6cd5\u7ed3\u6784\uff0c\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7684\u6d4b\u8bd5\u6761\u4ef6\u52a8\u6001\u9009\u62e9\u62fc\u63a5\u7684 sql \u7247\u6bb5\uff0c\u907f\u514d\u4e86\u8bed\u6cd5\u9519\u8bef\u3002<\/p>\n<p>\u6587\u4e2d\u5173\u4e8e\u7684\u77e5\u8bc6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u7684\u5b66\u4e60\u6709\u6240\u5e2e\u52a9\uff01\u82e5\u662f\u53d7\u76ca\u532a\u6d45\uff0c\u90a3\u5c31\u52a8\u52a8\u9f20\u6807\u6536\u85cf\u8fd9\u7bc7\u300aMybatis \u52a8\u6001 SQL \u67e5\u8be2\u4e2d\uff0c\u5982\u4f55\u4f18\u5316\u5305\u542b\u591a\u4e2a\u6761\u4ef6\u4e14\u4f7f\u7528 or \u8fde\u63a5\u7684\u67e5\u8be2\u8bed\u53e5\uff1f\u300b\u6587\u7ae0\u5427\uff0c\u4e5f\u53ef\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e86\u89e3\u76f8\u5173\u6280\u672f\u6587\u7ae0\u3002<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>Mybatis \u52a8\u6001 SQL \u67e5&#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-200500","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200500","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=200500"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200500\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200500"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200500"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}