{"id":7010,"date":"2024-11-14T09:00:02","date_gmt":"2024-11-14T01:00:02","guid":{"rendered":"https:\/\/fwq.ai\/blog\/7010\/"},"modified":"2024-11-14T09:00:02","modified_gmt":"2024-11-14T01:00:02","slug":"jdbc-%e4%b8%ad%e7%9a%84-executeupdate-%e5%92%8c-executequery-%e6%96%b9%e6%b3%95%ef%bc%9a%e4%b8%ba%e4%bb%80%e4%b9%88-executeupdate-%e8%bf%94%e5%9b%9e%e5%80%bc%e4%b8%8d%e6%98%af-resultset-%e5%af%b9","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/7010\/","title":{"rendered":"JDBC \u4e2d\u7684 executeUpdate \u548c executeQuery \u65b9\u6cd5\uff1a\u4e3a\u4ec0\u4e48 executeUpdate \u8fd4\u56de\u503c\u4e0d\u662f ResultSet \u5bf9\u8c61\uff1f"},"content":{"rendered":"

\"JDBC<\/p>\n

JDBC\u4e2d\u7684executeupdate\u548cexecuteQuery\u65b9\u6cd5\u89e3\u6790<\/strong><\/p>\n

JDBC\u4e2d\u7684executeupdate\u548cexecuteQuery\u65b9\u6cd5\u662f\u5e38\u7528\u65b9\u6cd5\u3002executeupdate\u8d1f\u8d23\u6267\u884c\uff0cexecuteQuery\u8d1f\u8d23\u67e5\u8be2\uff0cexecuteQuery\u65b9\u6cd5\u8fd4\u56deResultSet\u5bf9\u8c61\uff0c\u5373\u5b58\u50a8\u67e5\u8be2\u7ed3\u679c\u7684\u5bf9\u8c61\u3002\u800cexecuteupdate\u65b9\u6cd5\u8fd4\u56deint\uff0c\u5f15\u53d1\u4e86\u7591\u60d1\u3002<\/p>\n

\u6839\u636eJava\u6587\u6863\uff0cexecuteupdate\u65b9\u6cd5\u8fd4\u56de\u503c\u7684\u542b\u4e49\u4e3a\uff1a”1\uff09SQL\u6570\u636e\u64cd\u4f5c\u8bed\u8a00\uff08DML\uff09\u8bed\u53e5\u7684\u884c\u8ba1\u6570\uff0c\u62162\uff09\u4e0d\u8fd4\u56de\u4efb\u4f55\u5185\u5bb9\u7684SQL\u8bed\u53e5\u7684\u884c\u8ba1\u6570\u4e3a0″\u3002<\/p>\n

\u8fd9\u91cc\u6d89\u53ca\u4e00\u4e2a\u6982\u5ff5\uff0cSQL\u8bed\u53e5\u79cd\u7c7b\u3002executeQuery()\u4e3b\u8981\u7528\u4e8e\u6267\u884cDQL\uff08select\u67e5\u8be2\u8bed\u53e5\uff09\uff0c\u800cexecuteUpdate()\u4e3b\u8981\u7528\u4e8e\u6267\u884cDML\uff08\u5982insert\u3001update\u3001delete\uff09\u548cDDL\uff08\u5982create schema\uff09\u3002<\/p>\n

DML\u64cd\u4f5c\u6709\u884c\u6570\u53d8\u52a8\uff0cexecuteUpdate()\u8fd4\u56de\u53d7\u5f71\u54cd\u7684\u884c\u6570\uff1bDDL\u64cd\u4f5c\u65e0\u8fd4\u56de\uff0cexecuteUpdate()\u8fd4\u56de0\uff1b\u6b64\u5916\u8fd8\u6709\u4e00\u79cdDCL\u64cd\u4f5c\uff0cexecuteUpdate()\u4e5f\u80fd\u4f7f\u7528\uff0c\u4f46\u672a\u7ecf\u6d4b\u8bd5\u3002<\/p>\n

\u4ee5\u4e0a\u5c31\u662fJDBC \u4e2d\u7684 executeUpdate \u548c executeQuery \u65b9\u6cd5\uff1a\u4e3a\u4ec0\u4e48 executeUpdate \u8fd4\u56de\u503c\u4e0d\u662f ResultSet \u5bf9\u8c61\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":"

JDBC\u4e2d\u7684executeupdate\u548cexecuteQuery\u65b9\u6cd5\u89e3\u6790 JDBC\u4e2d\u7684executeupdate\u548cexecuteQuery\u65b9\u6cd5\u662f\u5e38\u7528\u65b9\u6cd5\u3002executeupdate\u8d1f\u8d23\u6267\u884c\uff0cexecuteQuery\u8d1f\u8d23\u67e5\u8be2\uff0cexecuteQuery\u65b9\u6cd5\u8fd4\u56deResultSet\u5bf9\u8c61\uff0c\u5373\u5b58\u50a8\u67e5\u8be2\u7ed3\u679c\u7684\u5bf9\u8c61\u3002\u800cexecuteupdate\u65b9\u6cd5\u8fd4\u56deint\uff0c\u5f15\u53d1\u4e86\u7591\u60d1\u3002 \u6839\u636eJava\u6587\u6863\uff0cexecuteupdate\u65b9\u6cd5\u8fd4\u56de\u503c\u7684\u542b\u4e49\u4e3a\uff1a”1\uff09SQL\u6570\u636e\u64cd\u4f5c\u8bed\u8a00\uff08DML\uff09\u8bed\u53e5\u7684\u884c\u8ba1\u6570\uff0c\u62162\uff09\u4e0d\u8fd4\u56de\u4efb\u4f55\u5185\u5bb9\u7684SQL\u8bed\u53e5\u7684\u884c\u8ba1\u6570\u4e3a0″\u3002 \u8fd9\u91cc\u6d89\u53ca\u4e00\u4e2a\u6982\u5ff5\uff0cSQL\u8bed\u53e5\u79cd\u7c7b\u3002executeQuery()\u4e3b\u8981\u7528\u4e8e\u6267\u884cDQL\uff08select\u67e5\u8be2\u8bed\u53e5\uff09\uff0c\u800cexecuteUpdate()\u4e3b\u8981\u7528\u4e8e\u6267\u884cDML\uff08\u5982insert\u3001update\u3001delete\uff09\u548cDDL\uff08\u5982create schema\uff09\u3002 DML\u64cd\u4f5c\u6709\u884c\u6570\u53d8\u52a8\uff0cexecuteUpdate()\u8fd4\u56de\u53d7\u5f71\u54cd\u7684\u884c\u6570\uff1bDDL\u64cd\u4f5c\u65e0\u8fd4\u56de\uff0cexecuteUpdate()\u8fd4\u56de0\uff1b\u6b64\u5916\u8fd8\u6709\u4e00\u79cdDCL\u64cd\u4f5c\uff0cexecuteUpdate()\u4e5f\u80fd\u4f7f\u7528\uff0c\u4f46\u672a\u7ecf\u6d4b\u8bd5\u3002 \u4ee5\u4e0a\u5c31\u662fJDBC \u4e2d\u7684 executeUpdate \u548c executeQuery \u65b9\u6cd5\uff1a\u4e3a\u4ec0\u4e48 executeUpdate \u8fd4\u56de\u503c\u4e0d\u662f ResultSet \u5bf9\u8c61\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-7010","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7010","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=7010"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7010\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=7010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=7010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=7010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}