{"id":5339,"date":"2024-11-14T10:02:45","date_gmt":"2024-11-14T02:02:45","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5339\/"},"modified":"2024-11-14T10:02:45","modified_gmt":"2024-11-14T02:02:45","slug":"oracle-sql%e8%af%ad%e5%8f%a5%e6%80%8e%e4%b9%88%e6%89%a7%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5339\/","title":{"rendered":"oracle\u00a0sql\u8bed\u53e5\u600e\u4e48\u6267\u884c"},"content":{"rendered":"<blockquote><p>\n  \u8981\u6267\u884c oracle sql \u8bed\u53e5\uff0c\u9700\u6309\u4ee5\u4e0b\u987a\u5e8f\u8fdb\u884c\uff1a\u521b\u5efa\u8fde\u63a5\uff1b\u521b\u5efa\u8bed\u53e5\u5bf9\u8c61\uff1b\u6267\u884c\u67e5\u8be2\u6216\u66f4\u65b0\uff1b\u5904\u7406\u7ed3\u679c\uff08\u4ec5\u9002\u7528\u4e8e\u67e5\u8be2\uff09\uff1b\u5173\u95ed\u8fde\u63a5\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/26\/2024052619512027933.jpg\" class=\"aligncenter\" title=\"oracle\u00a0sql\u8bed\u53e5\u600e\u4e48\u6267\u884c\u63d2\u56fe\" alt=\"oracle\u00a0sql\u8bed\u53e5\u600e\u4e48\u6267\u884c\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u6267\u884c Oracle SQL \u8bed\u53e5\uff1f<\/strong><\/p>\n<p>\u6267\u884c Oracle SQL \u8bed\u53e5\u6d89\u53ca\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u521b\u5efa\u8fde\u63a5<\/strong><\/p>\n<p>\u9996\u5148\uff0c\u4f7f\u7528 DriverManager.getConnection() \u65b9\u6cd5\u5efa\u7acb\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\u3002\u5b83\u9700\u8981\u6570\u636e\u5e93 URL\u3001\u7528\u6237\u540d\u548c\u5bc6\u7801\u4f5c\u4e3a\u53c2\u6570\u3002<\/p>\n<pre>Connection connection = DriverManager.getConnection(\n    \"jdbc:oracle:thin:@\/\/localhost:1521\/xe\", \"username\", \"password\");<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u521b\u5efa\u8bed\u53e5\u5bf9\u8c61<\/strong><\/p>\n<p>\u7136\u540e\uff0c\u4f7f\u7528 connection.createStatement() \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a Statement \u5bf9\u8c61\u6765\u6267\u884c SQL \u8bed\u53e5\u3002<\/p>\n<pre>Statement statement = connection.createStatement();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u6267\u884c\u67e5\u8be2<\/strong><\/p>\n<p>\u8981\u6267\u884c\u67e5\u8be2\u8bed\u53e5\uff08\u5982 SELECT\uff09\uff0c\u4f7f\u7528 Statement.executeQuery() \u65b9\u6cd5\u3002\u5b83\u8fd4\u56de\u4e00\u4e2a ResultSet \u5bf9\u8c61\uff0c\u5176\u4e2d\u5305\u542b\u67e5\u8be2\u7ed3\u679c\u3002<\/p>\n<pre>ResultSet resultSet = statement.executeQuery(\"SELECT * FROM employees\");<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u5904\u7406\u67e5\u8be2\u7ed3\u679c<\/strong><\/p>\n<p>\u4f7f\u7528 ResultSet.next() \u65b9\u6cd5\u904d\u5386\u67e5\u8be2\u7ed3\u679c\uff0c\u7136\u540e\u53ef\u4ee5\u4f7f\u7528 ResultSet.getXXX() \u65b9\u6cd5\u83b7\u53d6\u5217\u503c\uff0c\u5176\u4e2d XXX \u662f\u6570\u636e\u7c7b\u578b\uff08\u5982 getString()\u3001getInt()\uff09\u3002<\/p>\n<pre>while (resultSet.next()) {\n    int id = resultSet.getInt(\"id\");\n    String name = resultSet.getString(\"name\");\n    System.out.println(\"ID: \" + id + \", Name: \" + name);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. \u6267\u884c\u66f4\u65b0<\/strong><\/p>\n<p>\u8981\u6267\u884c\u66f4\u65b0\u8bed\u53e5\uff08\u5982 INSERT\u3001UPDATE\u3001DELETE\uff09\uff0c\u4f7f\u7528 Statement.executeUpdate() \u65b9\u6cd5\u3002\u5b83\u8fd4\u56de\u53d7\u5f71\u54cd\u7684\u884c\u6570\u3002<\/p>\n<pre>int rowCount = statement.executeUpdate(\"UPDATE employees SET name = 'New Name' WHERE id = 1\");<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>6. \u5173\u95ed\u8fde\u63a5<\/strong><\/p>\n<p>\u6700\u540e\uff0c\u4f7f\u7528 Connection.close() \u65b9\u6cd5\u5173\u95ed\u8fde\u63a5\u4ee5\u91ca\u653e\u8d44\u6e90\u3002<\/p>\n<pre>connection.close();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f&nbsp;\u600e\u4e48\u6267\u884c\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":"<p>\u8981\u6267\u884c oracle sql \u8bed\u53e5\uff0c\u9700\u6309\u4ee5\u4e0b\u987a\u5e8f\u8fdb\u884c\uff1a\u521b\u5efa\u8fde\u63a5\uff1b\u521b\u5efa\u8bed\u53e5\u5bf9\u8c61\uff1b\u6267\u884c\u67e5\u8be2\u6216\u66f4\u65b0\uff1b\u5904\u7406\u7ed3\u679c\uff08\u4ec5\u9002\u7528\u4e8e\u67e5\u8be2\uff09\uff1b\u5173\u95ed\u8fde\u63a5\u3002 \u5982\u4f55\u6267\u884c Oracle SQL \u8bed\u53e5\uff1f \u6267\u884c Oracle SQL \u8bed\u53e5\u6d89\u53ca\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1. \u521b\u5efa\u8fde\u63a5 \u9996\u5148\uff0c\u4f7f\u7528 DriverManager.getConnection() \u65b9\u6cd5\u5efa\u7acb\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\u3002\u5b83\u9700\u8981\u6570\u636e\u5e93 URL\u3001\u7528\u6237\u540d\u548c\u5bc6\u7801\u4f5c\u4e3a\u53c2\u6570\u3002 Connection connection = DriverManager.getConnection( &#8220;jdbc:oracle:thin:@\/\/localhost:1521\/xe&#8221;, &#8220;username&#8221;, &#8220;password&#8221;); \u767b\u5f55\u540e\u590d\u5236 2. \u521b\u5efa\u8bed\u53e5\u5bf9\u8c61 \u7136\u540e\uff0c\u4f7f\u7528 connection.createStatement() \u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a Statement \u5bf9\u8c61\u6765\u6267\u884c SQL \u8bed\u53e5\u3002 Statement statement = connection.createStatement(); \u767b\u5f55\u540e\u590d\u5236 3. \u6267\u884c\u67e5\u8be2 \u8981\u6267\u884c\u67e5\u8be2\u8bed\u53e5\uff08\u5982 SELECT\uff09\uff0c\u4f7f\u7528 Statement.executeQuery() \u65b9\u6cd5\u3002\u5b83\u8fd4\u56de\u4e00\u4e2a ResultSet \u5bf9\u8c61\uff0c\u5176\u4e2d\u5305\u542b\u67e5\u8be2\u7ed3\u679c\u3002 ResultSet resultSet = statement.executeQuery(&#8220;SELECT * FROM employees&#8221;); [&hellip;]<\/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-5339","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5339","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=5339"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5339\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5339"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}