{"id":30080,"date":"2024-03-18T23:22:21","date_gmt":"2024-03-18T14:22:21","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/spark%e3%81%a7jdbc%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/"},"modified":"2024-03-22T22:31:02","modified_gmt":"2024-03-22T13:31:02","slug":"spark%e3%81%a7jdbc%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/spark%e3%81%a7jdbc%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/","title":{"rendered":"Spark\u3067JDBC\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>Spark\u3067\u306f\u3001DataFrameWriter\u306ejdbc\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001JDBC\u3067\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5177\u4f53\u7684\u306a\u624b\u9806\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> org.apache.spark.sql._\r\n\r\n<span class=\"hljs-keyword\">val<\/span> spark = <span class=\"hljs-type\">SparkSession<\/span>.builder()\r\n  .appName(<span class=\"hljs-string\">\"Delete JDBC data\"<\/span>)\r\n  .config(<span class=\"hljs-string\">\"spark.master\"<\/span>, <span class=\"hljs-string\">\"local\"<\/span>)\r\n  .getOrCreate()\r\n\r\n<span class=\"hljs-keyword\">val<\/span> jdbcUrl = <span class=\"hljs-string\">\"jdbc:mysql:\/\/localhost:3306\/mydatabase\"<\/span>\r\n<span class=\"hljs-keyword\">val<\/span> jdbcUsername = <span class=\"hljs-string\">\"username\"<\/span>\r\n<span class=\"hljs-keyword\">val<\/span> jdbcPassword = <span class=\"hljs-string\">\"password\"<\/span>\r\n\r\n<span class=\"hljs-keyword\">val<\/span> table = <span class=\"hljs-string\">\"my_table\"<\/span>\r\n<span class=\"hljs-keyword\">val<\/span> condition = <span class=\"hljs-string\">\"id &gt; 100\"<\/span>\r\n\r\n<span class=\"hljs-keyword\">val<\/span> deleteQuery = <span class=\"hljs-string\">s\"DELETE FROM <span class=\"hljs-subst\">$table<\/span> WHERE <span class=\"hljs-subst\">$condition<\/span>\"<\/span>\r\n\r\n<span class=\"hljs-keyword\">val<\/span> connectionProperties = <span class=\"hljs-keyword\">new<\/span> java.util.<span class=\"hljs-type\">Properties<\/span>()\r\nconnectionProperties.put(<span class=\"hljs-string\">\"user\"<\/span>, jdbcUsername)\r\nconnectionProperties.put(<span class=\"hljs-string\">\"password\"<\/span>, jdbcPassword)\r\n\r\n<span class=\"hljs-keyword\">val<\/span> df = spark.read.jdbc(jdbcUrl, table, connectionProperties)\r\n\r\ndf.write.mode(<span class=\"hljs-type\">SaveMode<\/span>.<span class=\"hljs-type\">Append<\/span>).jdbc(jdbcUrl, table, connectionProperties)\r\n<\/code><\/pre>\n<p>\u524d\u8ff0\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001deleteQuery\u306f\u5b9f\u884c\u3059\u308bDELETE\u6587\u3067\u3042\u308a\u3001connectionProperties\u306b\u306fJDBC\u63a5\u7d9a\u306b\u5fc5\u8981\u306a\u30e6\u30fc\u30b6\u30fc\u540d\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001DataFrameWriter\u306ejdbc\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066DELETE\u6587\u3092JDBC\u306b\u9001\u4fe1\u3057\u3001\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Spark\u3067\u306f\u3001DataFrameWriter\u306ejdbc\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001JDBC\u3067\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5177\u4f53\u7684\u306a\u624b\u9806\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002 import org.apache.spark.sql._ val s [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-30080","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) - 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