{"id":90944,"date":"2024-03-21T13:11:59","date_gmt":"2024-03-21T04:11:59","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/mybatis-plus%e3%81%a7%e5%b7%a6%e7%b5%90%e5%90%88%e3%82%af%e3%82%a8%e3%83%aa%e3%82%92%e8%a1%8c%e3%81%86%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f\/"},"modified":"2024-03-27T04:13:54","modified_gmt":"2024-03-26T19:13:54","slug":"mybatis-plus%e3%81%a7%e5%b7%a6%e7%b5%90%e5%90%88%e3%82%af%e3%82%a8%e3%83%aa%e3%82%92%e8%a1%8c%e3%81%86%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/mybatis-plus%e3%81%a7%e5%b7%a6%e7%b5%90%e5%90%88%e3%82%af%e3%82%a8%e3%83%aa%e3%82%92%e8%a1%8c%e3%81%86%e6%96%b9%e6%b3%95%e3%81%af%ef%bc%9f\/","title":{"rendered":"Mybatis-Plus\u3067\u5de6\u7d50\u5408\u30af\u30a8\u30ea\u3092\u884c\u3046\u65b9\u6cd5\u306f\uff1f"},"content":{"rendered":"<p>MyBatis-Plus\u3067\u5de6\u7d50\u5408\u30af\u30a8\u30ea\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u306f\u3001LeftJoinWrapper\u3092\u4f7f\u7528\u3057\u3066\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>LeftJoinWrapper \u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u30af\u30a8\u30ea\u5185\u3067 leftJoin \u30e1\u30bd\u30c3\u30c9\u306b\u3088\u308a\u5de6\u7d50\u5408\u30af\u30a8\u30ea\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u5177\u4f53\u7684\u306a\u624b\u9806\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<p>\u5de6\u7d50\u5408\u5bfe\u8c61\u306e\u30c6\u30fc\u30d6\u30eb\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u30af\u30e9\u30b9\u3092\u5f15\u6570\u306b\u3068\u3063\u3066\u30e9\u30c3\u30d1\u30fc\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3002<\/p>\n<pre class=\"post-pre\"><code>LeftJoinWrapper&lt;\u9700\u8981\u5de6\u8fde\u63a5\u7684\u8868\u5b9e\u4f53\u7c7b, \u4e3b\u8868\u5b9e\u4f53\u7c7b&gt; wrapper = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">LeftJoinWrapper<\/span>&lt;&gt;(\u9700\u8981\u5de6\u8fde\u63a5\u7684\u8868\u5b9e\u4f53\u7c7b.class);\r\n<\/code><\/pre>\n<p>\u30e9\u30c3\u30d1\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5185\u3067leftJoin\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u5de6\u7d50\u5408\u306e\u6761\u4ef6\u3092\u8ffd\u52a0\u3059\u308b\u306b\u306f\u3001\u30e9\u30e0\u30c0\u5f0f\u307e\u305f\u306f\u6587\u5b57\u5217\u5f62\u5f0f\u3067\u95a2\u9023\u6761\u4ef6\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002<\/p>\n<pre class=\"post-pre\"><code>wrapper.leftJoin((\u9700\u8981\u5de6\u8fde\u63a5\u7684\u8868\u5b9e\u4f53\u7c7b::getId), (\u4e3b\u8868\u5b9e\u4f53\u7c7b::getId));\r\n<\/code><\/pre>\n<p>\u6700\u5f8c\u306b\u3001MyBatis-Plus\u63d0\u4f9b\u3059\u308bselectList\u30e1\u30bd\u30c3\u30c9\u3067\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3059\u308b\u7d50\u679c\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>List&lt;\u4e3b\u8868\u5b9e\u4f53\u7c7b&gt; list = \u4e3b\u8868\u5b9e\u4f53\u7c7bMapper.selectList(wrapper);\r\n<\/code><\/pre>\n<p>LeftJoinWrapper\u3092\u4f7f\u7528\u3057\u3066\u5de6\u7d50\u5408\u30af\u30a8\u30ea\u3092\u884c\u3046\u969b\u306b\u306f\u3001\u7d50\u5408\u3059\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u5b58\u5728\u3057\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u30af\u30e9\u30b9\u306b\u305d\u308c\u305e\u308c\u5bfe\u5fdc\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MyBatis-Plus\u3067\u5de6\u7d50\u5408\u30af\u30a8\u30ea\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u306f\u3001LeftJoinWrapper\u3092\u4f7f\u7528\u3057\u3066\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002 LeftJoinWrapper \u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u30af\u30a8\u30ea\u5185\u3067 leftJoin \u30e1\u30bd\u30c3\u30c9\u306b\u3088\u308a\u5de6\u7d50\u5408\u30af\u30a8\u30ea\u3092\u5b9f [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-90944","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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