{"id":29732,"date":"2024-03-18T22:06:07","date_gmt":"2024-03-18T13:06:07","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/%e5%a4%a7%e9%87%8f%e3%81%ae%e3%83%87%e3%83%bc%e3%82%bf%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af%e3%80%81%e3%81%a9%e3%81%ae%e3%82%88%e3%81%86%e3%81%abjdbc%e3%82%92%e4%bd%bf\/"},"modified":"2024-03-22T21:40:56","modified_gmt":"2024-03-22T12:40:56","slug":"%e5%a4%a7%e9%87%8f%e3%81%ae%e3%83%87%e3%83%bc%e3%82%bf%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af%e3%80%81%e3%81%a9%e3%81%ae%e3%82%88%e3%81%86%e3%81%abjdbc%e3%82%92%e4%bd%bf","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/%e5%a4%a7%e9%87%8f%e3%81%ae%e3%83%87%e3%83%bc%e3%82%bf%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e3%81%ab%e3%81%af%e3%80%81%e3%81%a9%e3%81%ae%e3%82%88%e3%81%86%e3%81%abjdbc%e3%82%92%e4%bd%bf\/","title":{"rendered":"\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u306b\u306f\u3001\u3069\u306e\u3088\u3046\u306bJDBC\u3092\u4f7f\u7528\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3001\u52b9\u7387\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306bJDBC\u306e\u30d0\u30c3\u30c1\u51e6\u7406\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u793a\u3059\u306e\u306f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\">try\u00a0(Connection\u00a0conn\u00a0=\u00a0DriverManager.getConnection(url,\u00a0username,\u00a0password);<\/pre>\n<p>PreparedStatement\u00a0stmt\u00a0=\u00a0conn.prepareStatement(\u201cDELETE\u00a0FROM\u00a0table_name\u00a0WHERE\u00a0condition\u201d))\u00a0{<\/p>\n<p>&nbsp;<\/p>\n<p>conn.setAutoCommit(false);\u00a0\u00a0\/\/\u00a0\u624b\u52a8\u63d0\u4ea4\u4e8b\u52a1<\/p>\n<p>&nbsp;<\/p>\n<p>int\u00a0batchSize\u00a0=\u00a01000;\u00a0\u00a0\/\/\u00a0\u6bcf\u6279\u5904\u7406\u7684\u6570\u636e\u91cf<\/p>\n<p>&nbsp;<\/p>\n<p>int\u00a0count\u00a0=\u00a00;<\/p>\n<p>&nbsp;<\/p>\n<p>\/\/\u00a0\u6267\u884c\u5220\u9664\u64cd\u4f5c<\/p>\n<p>&nbsp;<\/p>\n<p>stmt.setFetchSize(batchSize);<\/p>\n<p>&nbsp;<\/p>\n<p>ResultSet\u00a0rs\u00a0=\u00a0stmt.executeQuery();<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>while\u00a0(rs.next())\u00a0{<\/p>\n<p>&nbsp;<\/p>\n<p>stmt.addBatch();<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>if\u00a0(++count\u00a0%\u00a0batchSize\u00a0==\u00a00)\u00a0{<\/p>\n<p>&nbsp;<\/p>\n<p>stmt.executeBatch();<\/p>\n<p>&nbsp;<\/p>\n<p>conn.commit();<\/p>\n<p>&nbsp;<\/p>\n<p>}<\/p>\n<p>&nbsp;<\/p>\n<p>}<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>stmt.executeBatch();\u00a0\u00a0\/\/\u00a0\u5904\u7406\u5269\u4f59\u7684\u6570\u636e<\/p>\n<p>&nbsp;<\/p>\n<p>conn.commit(); }\u00a0catch\u00a0(SQLException\u00a0e)\u00a0{<\/p>\n<p>&nbsp;<\/p>\n<p>\/\/\u00a0\u5904\u7406\u5f02\u5e38 }<\/p>\n<pre class=\"post-pre\"><\/pre>\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001PreparedStatement\u3092\u4f7f\u7528\u3057\u3066\u524a\u9664\u64cd\u4f5c\u3092\u5b9f\u884c\u3057\u3001setFetchSize\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30d0\u30c3\u30c1\u51e6\u7406\u3059\u308b\u30c7\u30fc\u30bf\u91cf\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002ResultSet\u304b\u3089\u30c7\u30fc\u30bf\u3092\u7e70\u308a\u8fd4\u3057\u8aad\u307f\u53d6\u308a\u3001addBatch\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u30d0\u30c3\u30c1\u64cd\u4f5c\u3092\u30d0\u30c3\u30c1\u51e6\u7406\u306b\u8ffd\u52a0\u3057\u307e\u3059\u3002\u4e00\u5b9a\u91cf\u306e\u30c7\u30fc\u30bf\u304c\u7d2f\u7a4d\u3055\u308c\u305f\u6642\u70b9\u3067\u3001executeBatch\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u30d0\u30c3\u30c1\u51e6\u7406\u3092\u5b9f\u884c\u3057\u3001commit\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u30b3\u30df\u30c3\u30c8\u3057\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u30eb\u30fc\u30d7\u304c\u7d42\u4e86\u3057\u305f\u5f8c\u306b\u518d\u3073executeBatch\u304a\u3088\u3073commit\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u6b8b\u308a\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3057\u307e\u3059\u3002\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u524a\u9664\u64cd\u4f5c\u3092\u5b9f\u884c\u3059\u308b\u969b\u306b\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u6ce8\u610f\u3057\u3066\u64cd\u4f5c\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30c7\u30fc\u30bf\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u3001\u52b9\u7387\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306bJDBC\u306e\u30d0\u30c3\u30c1\u51e6\u7406\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u793a\u3059\u306e\u306f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002 try\u00a0(Connection\u00a0conn\u00a0=\u00a0DriverManager.ge [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-29732","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u306b\u306f\u3001\u3069\u306e\u3088\u3046\u306bJDBC\u3092\u4f7f\u7528\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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