{"id":91035,"date":"2024-03-21T13:19:42","date_gmt":"2024-03-21T04:19:42","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/mybatis%e3%81%aechoose%e3%82%bf%e3%82%b0%e3%81%ae%e7%94%a8%e9%80%94%e3%81%af%ef%bc%9f\/"},"modified":"2024-04-04T14:37:49","modified_gmt":"2024-04-04T05:37:49","slug":"mybatis%e3%81%aechoose%e3%82%bf%e3%82%b0%e3%81%ae%e7%94%a8%e9%80%94%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/mybatis%e3%81%aechoose%e3%82%bf%e3%82%b0%e3%81%ae%e7%94%a8%e9%80%94%e3%81%af%ef%bc%9f\/","title":{"rendered":"mybatis\u306echoose\u30bf\u30b0\u306e\u7528\u9014\u306f\uff1f"},"content":{"rendered":"<p>MyBatis\u306echoose\u30bf\u30b0\u306fJava\u306b\u304a\u3051\u308bswitch\u6587\u306e\u3088\u3046\u306b\u3001\u8907\u6570\u306e\u6761\u4ef6\u304b\u3089\u4e00\u3064\u3092\u9078\u629e\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u6761\u4ef6\u3092\u6e80\u305f\u3057\u305f\u6700\u521d\u306e\u30b5\u30d6\u30bf\u30b0\u306b\u5bfe\u5fdc\u3059\u308bSQL\u6587\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<p>\u300cchoose\u300d\u30bf\u30b0\u306f\u8907\u6570\u500b\u306e\u300cwhen\u300d\u3068\u3072\u3068\u3064\u306e\u300cotherwise\u300d\u30b5\u30d6\u30bf\u30b0\u3092\u542b\u307f\u307e\u3059\u3002 \u5404\u300cwhen\u300d\u30b5\u30d6\u30bf\u30b0\u306f\u3001\u6761\u4ef6\u5224\u65ad\u306e\u5f0f\u3092\u6307\u5b9a\u3059\u308b\u300ctest\u300d\u5c5e\u6027\u3092\u542b\u307f\u307e\u3059\u3002 \u300cwhen\u300d\u30b5\u30d6\u30bf\u30b0\u306e\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u305f\u5834\u5408\u3001\u305d\u308c\u306b\u5bfe\u3059\u308bSQL\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002 \u3069\u306e\u300cwhen\u300d\u30b5\u30d6\u30bf\u30b0\u306e\u6761\u4ef6\u3082\u6e80\u305f\u3055\u308c\u306a\u304b\u3063\u305f\u5834\u5408\u3001 \u300cotherwise\u300d\u30b5\u30d6\u30bf\u30b0\u5185\u306eSQL\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306f\u3001`choose` \u30bf\u30b0\u3092\u4f7f\u7528\u3057\u305f\u4f8b\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>&lt;select id=\"getUser\" parameterType=\"int\" resultType=\"User\"&gt;\r\n  SELECT *\r\n  FROM users\r\n  WHERE id = #{id}\r\n  &lt;choose&gt;\r\n    &lt;when test=\"enabled != null\"&gt;\r\n      AND enabled = #{enabled}\r\n    &lt;\/when&gt;\r\n    &lt;when test=\"name != null\"&gt;\r\n      AND name = #{name}\r\n    &lt;\/when&gt;\r\n    &lt;otherwise&gt;\r\n      AND age = #{age}\r\n    &lt;\/otherwise&gt;\r\n  &lt;\/choose&gt;\r\n&lt;\/select&gt;\r\n<\/code><\/pre>\n<p>\u6307\u5b9a\u30d1\u30e9\u30e1\u30fc\u30bfenabled\u306b\u5024\u304c\u3042\u308b\u5834\u5408\u306fSQL\u6587AND enabled = #{enabled}\u304c\u5b9f\u884c\u3055\u308c\u3001\u30d1\u30e9\u30e1\u30fc\u30bfname\u306b\u5024\u304c\u3042\u308b\u5834\u5408\u306fAND name = #{name}\u304c\u5b9f\u884c\u3055\u308c\u3001\u4e0a\u8a182\u6761\u4ef6\u4ee5\u5916\u306e\u5834\u5408\u306fAND age = #{age}\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>CHOOSE\u69cb\u6587\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u6761\u4ef6\u306b\u5fdc\u3058\u3066\u7570\u306a\u308b\u7167\u4f1a\u3092\u5b9f\u884c\u3059\u308b\u3001\u3088\u308a\u67d4\u8edf\u306aSQL\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MyBatis\u306echoose\u30bf\u30b0\u306fJava\u306b\u304a\u3051\u308bswitch\u6587\u306e\u3088\u3046\u306b\u3001\u8907\u6570\u306e\u6761\u4ef6\u304b\u3089\u4e00\u3064\u3092\u9078\u629e\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u6761\u4ef6\u3092\u6e80\u305f\u3057\u305f\u6700\u521d\u306e\u30b5\u30d6\u30bf\u30b0\u306b\u5bfe\u5fdc\u3059\u308bSQL\u6587\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002 \u300cchoose\u300d\u30bf\u30b0\u306f\u8907\u6570\u500b\u306e\u300cwh [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-91035","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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