{"id":201064,"date":"2025-05-06T13:36:43","date_gmt":"2025-05-06T05:36:43","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201064\/"},"modified":"2025-05-06T13:36:43","modified_gmt":"2025-05-06T05:36:43","slug":"sql%e8%af%ad%e5%8f%a5%e4%b8%ad%e5%a6%82%e4%bd%95%e6%a0%b9%e6%8d%ae%e5%ad%97%e6%ae%b5%e5%9c%a8%e5%88%97%e8%a1%a8%e4%b8%ad%e6%89%a7%e8%a1%8c%e6%9b%b4%e6%96%b0%e6%93%8d%e4%bd%9c%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201064\/","title":{"rendered":"SQL\u8bed\u53e5\u4e2d\u5982\u4f55\u6839\u636e\u5b57\u6bb5\u5728\u5217\u8868\u4e2d\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>SQL\u8bed\u53e5\u4e2d\u5982\u4f55\u6839\u636e\u5b57\u6bb5\u5728\u5217\u8868\u4e2d\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\uff1f<\/h1>\n<p>\u4eb2\u7231\u7684\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5982\u679c\u4f60\u70b9\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u8bf4\u660e\u4f60\u5bf9\u300aSQL\u8bed\u53e5\u4e2d\u5982\u4f55\u6839\u636e\u5b57\u6bb5\u5728\u5217\u8868\u4e2d\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\uff1f\u300b\u5f88\u611f\u5174\u8da3\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u7ed9\u5927\u5bb6\u8be6\u7ec6\u89e3\u6790\u4e00\u4e0b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u6240\u6709\u8ba4\u771f\u8bfb\u5b8c\u7684\u7ae5\u978b\u4eec\uff0c\u90fd\u6709\u5b9e\u8d28\u6027\u7684\u63d0\u9ad8\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241129\/173284114967490ebd51a40.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>sql\u8bed\u53e5\u4e2d\u5982\u4f55\u6839\u636e\u5b57\u6bb5\u5728\u5217\u8868\u4e2d\u7684\u60c5\u51b5\u6267\u884c\u66f4\u65b0\u64cd\u4f5c<\/strong><\/p>\n<p>\u5728\u8fdb\u884c\u6279\u91cf\u66f4\u65b0\u65f6\uff0c\u9700\u8981\u6839\u636e\u5f85\u66f4\u65b0\u6570\u636e\u7684\u5b57\u6bb5\u5217\u8868\u9010\u4e2a\u5b57\u6bb5\u8fdb\u884c\u5224\u65ad\u66f4\u65b0\uff0c\u6b64\u65f6\u7684\u5224\u65ad\u6761\u4ef6\u5c31\u662f\u8be5\u5b57\u6bb5\u662f\u5426\u5728\u8fd9\u4e2a\u5217\u8868\u4e2d\u3002sql\u8bed\u53e5\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7if\u8bed\u53e5\u6765\u5b9e\u73b0\u8fd9\u79cd\u5224\u65ad\u3002<\/p>\n<p>\u5982\u679c\u4f7f\u7528java\u4ee3\u7801\uff0cdao\u5c42\u65b9\u6cd5\u53ef\u4ee5\u5b9a\u4e49\u4e3a\uff1a<\/p>\n<pre>int batchupdatebyid(\n    @param(\"entitylist\") list&lt;schooldo&gt; entitylist, \n    @param(\"fieldnameslist\") list&lt;string&gt; fieldnameslist);<\/pre>\n<p>\u76f8\u5e94\u7684xml\u6587\u4ef6\u53ef\u4ee5\u7f16\u5199\u4e3a\uff1a<\/p>\n<pre>    &lt;!-- \u6279\u91cf\u63d2\u5165 --&gt;\n    &lt;update id=\"batchUpdateById\"&gt;\n        &lt;foreach collection=\"entityList\" item=\"entity\" index=\"index1\" open=\"(\" close=\")\" separator=\";\"&gt;\n            UPDATE school_info SET\n            &lt;if test='fieldNamesList.contains(\"schoolNo\")'&gt;\n                schoolNo = #{entity.getSchoolNo}\n            &lt;\/if&gt;\n            &lt;if test='fieldNamesList.contains(\"schoolRank\")'&gt;\n                schoolRank = #{entity.getSchoolRank}\n            &lt;\/if&gt;\n            where dataId = #{entity.dataId}\n        &lt;\/foreach&gt;\n    &lt;\/update&gt;<\/pre>\n<p>\u5728\u8fd9\u4e2axml\u6587\u4ef6\u4e2d\uff0cfieldnameslist\u662f\u5305\u542b\u5f85\u66f4\u65b0\u5b57\u6bb5\u7684\u5217\u8868\u3002\u901a\u8fc7if\u8bed\u53e5\uff0c\u6267\u884c\u5224\u65ad\u6761\u4ef6fieldnameslist.contains(&#8220;\u5b57\u6bb5\u540d&#8221;)\uff0c\u5982\u679c\u4e3a\u771f\uff0c\u5219\u66f4\u65b0\u8be5\u5b57\u6bb5\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\u300aSQL\u8bed\u53e5\u4e2d\u5982\u4f55\u6839\u636e\u5b57\u6bb5\u5728\u5217\u8868\u4e2d\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\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>SQL\u8bed\u53e5\u4e2d\u5982\u4f55\u6839\u636e\u5b57\u6bb5\u5728\u5217\u8868\u4e2d&#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-201064","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201064","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=201064"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201064\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201064"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201064"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}