{"id":7022,"date":"2024-03-14T19:46:49","date_gmt":"2024-03-14T10:46:49","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/7022-2\/"},"modified":"2024-03-20T16:12:51","modified_gmt":"2024-03-20T07:12:51","slug":"7022-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/7022-2\/","title":{"rendered":""},"content":{"rendered":"<p>MyBatis\u3067\u306f\u3001if\u30bf\u30b0\u3092\u4f7f\u3063\u3066SQL\u6587\u3092\u52d5\u7684\u306b\u7d50\u5408\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002if\u30bf\u30b0\u306f\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u7279\u5b9a\u306eSQL\u6587\u3092\u542b\u3080\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u3001\u6761\u4ef6\u304c\u6210\u7acb\u3059\u308c\u3070SQL\u6587\u3092\u5b9f\u884c\u3057\u3001\u305d\u3046\u3067\u306a\u3051\u308c\u3070\u7121\u8996\u3057\u307e\u3059\u3002<\/p>\n<p>\u30de\u30c3\u30d1\u30fcXML\u30d5\u30a1\u30a4\u30eb\u3067\u306f\u3001if\u30bf\u30b0\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">select<\/span> <span class=\"hljs-attr\">id<\/span>=<span class=\"hljs-string\">\"getUserById\"<\/span> <span class=\"hljs-attr\">parameterType<\/span>=<span class=\"hljs-string\">\"int\"<\/span> <span class=\"hljs-attr\">resultType<\/span>=<span class=\"hljs-string\">\"User\"<\/span>&gt;<\/span>\r\n    SELECT * FROM user\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">where<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">if<\/span> <span class=\"hljs-attr\">test<\/span>=<span class=\"hljs-string\">\"id != null\"<\/span>&gt;<\/span>\r\n            AND id = #{id}\r\n        <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">if<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">if<\/span> <span class=\"hljs-attr\">test<\/span>=<span class=\"hljs-string\">\"name != null\"<\/span>&gt;<\/span>\r\n            AND name = #{name}\r\n        <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">if<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">where<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">select<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u4e0e\u524d\u8ff0\u793a\u4f8b\u76f8\u540c\uff0c\u5982\u679c\u4f20\u9012\u7684id\u53c2\u6570\u4e0d\u4e3a\u7a7a\uff0c\u5219\u4f1a\u5c06AND id = #{id}\u6dfb\u52a0\u5230SQL\u8bed\u53e5\u4e2d\uff1b\u5982\u679cname\u4e0d\u4e3a\u7a7a\uff0c\u5219\u5c06AND name = #{name}\u6dfb\u52a0\u5230SQL\u8bed\u53e5\u4e2d\u3002\u901a\u8fc7\u6b64\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6839\u636e\u4f20\u9012\u7684\u53c2\u6570\u52a8\u6001\u6784\u5efaSQL\u8bed\u53e5\uff0c\u5b9e\u73b0\u5177\u6709\u7075\u6d3b\u6027\u7684SQL\u67e5\u8be2\u64cd\u4f5c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MyBatis\u3067\u306f\u3001if\u30bf\u30b0\u3092\u4f7f\u3063\u3066SQL\u6587\u3092\u52d5\u7684\u306b\u7d50\u5408\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002if\u30bf\u30b0\u306f\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u7279\u5b9a\u306eSQL\u6587\u3092\u542b\u3080\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u3001\u6761\u4ef6\u304c\u6210\u7acb\u3059\u308c\u3070SQL\u6587\u3092\u5b9f\u884c\u3057\u3001\u305d\u3046\u3067\u306a\u3051\u308c\u3070\u7121\u8996\u3057\u307e\u3059\u3002 \u30de\u30c3\u30d1\u30fcXML\u30d5\u30a1\u30a4 [&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-7022","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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