{"id":7897,"date":"2024-11-14T08:38:02","date_gmt":"2024-11-14T00:38:02","guid":{"rendered":"https:\/\/fwq.ai\/blog\/7897\/"},"modified":"2024-11-14T08:38:02","modified_gmt":"2024-11-14T00:38:02","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:\/\/fwq.ai\/blog\/7897\/","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":"

\"SQL\u8bed\u53e5\u4e2d\u5982\u4f55\u6839\u636e\u5b57\u6bb5\u5728\u5217\u8868\u4e2d\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\uff1f\u63d2\u56fe\"<\/p>\n

\u4e2d\u5982\u4f55\u6839\u636e\u5b57\u6bb5\u5728\u5217\u8868\u4e2d\u7684\u60c5\u51b5\u6267\u884c\u66f4\u65b0\u64cd\u4f5c<\/strong><\/p>\n

\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

\u5982\u679c\u4f7f\u7528java\u4ee3\u7801\uff0cdao\u5c42\u65b9\u6cd5\u53ef\u4ee5\u5b9a\u4e49\u4e3a\uff1a<\/p>\n

int batchupdatebyid(\n    @param(\"entitylist\") list<schooldo> entitylist, \n    @param(\"fieldnameslist\") list<string> fieldnameslist);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u76f8\u5e94\u7684xml\u6587\u4ef6\u53ef\u4ee5\u7f16\u5199\u4e3a\uff1a<\/p>\n
    <!-- \u6279\u91cf\u63d2\u5165 -->\n    <update id=\"batchUpdateById\">\n        <foreach collection=\"entityList\" item=\"entity\" index=\"index1\" open=\"(\" close=\")\" separator=\";\">\n            UPDATE school_info SET\n            <if test='fieldNamesList.contains(\"schoolNo\")'>\n                schoolNo = #{entity.getSchoolNo}\n            <\/if>\n            <if test='fieldNamesList.contains(\"schoolRank\")'>\n                schoolRank = #{entity.getSchoolRank}\n            <\/if>\n            where dataId = #{entity.dataId}\n        <\/foreach>\n    <\/update><\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\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.contns(“\u5b57\u6bb5\u540d”)\uff0c\u5982\u679c\u4e3a\u771f\uff0c\u5219\u66f4\u65b0\u8be5\u5b57\u6bb5\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fSQL\u8bed\u53e5\u4e2d\u5982\u4f55\u6839\u636e\u5b57\u6bb5\u5728\u5217\u8868\u4e2d\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\uff1f\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":"
\u4e2d\u5982\u4f55\u6839\u636e\u5b57\u6bb5\u5728\u5217\u8868\u4e2d\u7684\u60c5\u51b5\u6267\u884c\u66f4\u65b0\u64cd\u4f5c \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 \u5982\u679c\u4f7f\u7528java\u4ee3\u7801\uff0cdao\u5c42\u65b9\u6cd5\u53ef\u4ee5\u5b9a\u4e49\u4e3a\uff1a int batchupdatebyid( @param(“entitylist”) list<schooldo> entitylist, @param(“fieldnameslist”) list<string> fieldnameslist); \u767b\u5f55\u540e\u590d\u5236 \u76f8\u5e94\u7684xml\u6587\u4ef6\u53ef\u4ee5\u7f16\u5199\u4e3a\uff1a <!– \u6279\u91cf\u63d2\u5165 –> <update id=”batchUpdateById”> <foreach collection=”entityList” item=”entity” index=”index1″ open=”(” close=”)” separator=”;”> UPDATE school_info SET <if test=’fieldNamesList.contains(“schoolNo”)’> schoolNo = #{entity.getSchoolNo} <\/if> <if test=’fieldNamesList.contains(“schoolRank”)’> schoolRank = #{entity.getSchoolRank} <\/if> where dataId = #{entity.dataId} <\/foreach> <\/update> \u767b\u5f55\u540e\u590d\u5236 \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.contns(“\u5b57\u6bb5\u540d”)\uff0c\u5982\u679c\u4e3a\u771f\uff0c\u5219\u66f4\u65b0\u8be5\u5b57\u6bb5\u3002 \u4ee5\u4e0a\u5c31\u662fSQL\u8bed\u53e5\u4e2d\u5982\u4f55\u6839\u636e\u5b57\u6bb5\u5728\u5217\u8868\u4e2d\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\uff1f\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},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-7897","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7897","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=7897"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7897\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=7897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=7897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=7897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}