{"id":5253,"date":"2024-03-14T14:52:07","date_gmt":"2024-03-14T05:52:07","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/sql%e3%81%ae%e3%82%bf%e3%82%a4%e3%83%a0%e3%82%b9%e3%82%bf%e3%83%b3%e3%83%97%e3%81%ae%e5%b7%ae%e3%82%92%e8%a8%88%e7%ae%97%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99\/"},"modified":"2025-08-03T02:33:20","modified_gmt":"2025-08-02T17:33:20","slug":"sql%e3%81%ae%e3%82%bf%e3%82%a4%e3%83%a0%e3%82%b9%e3%82%bf%e3%83%b3%e3%83%97%e3%81%ae%e5%b7%ae%e3%82%92%e8%a8%88%e7%ae%97%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/sql%e3%81%ae%e3%82%bf%e3%82%a4%e3%83%a0%e3%82%b9%e3%82%bf%e3%83%b3%e3%83%97%e3%81%ae%e5%b7%ae%e3%82%92%e8%a8%88%e7%ae%97%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99\/","title":{"rendered":"SQL \u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u5dee\u5206\u8a08\u7b97\uff1a\u65e5\u4ed8\u30fb\u6642\u9593\u9593\u9694\u306e\u53d6\u5f97\u65b9\u6cd5"},"content":{"rendered":"<p>SQL\u3067\u306f\u3001DATEDIFF\u95a2\u6570\u3092\u4f7f\u7528\u3057\u30662\u3064\u306e\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u9593\u306e\u6642\u9593\u5dee\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5177\u4f53\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">SELECT<\/span> DATEDIFF(<span class=\"hljs-string\">'unit'<\/span>, start_date, end_date);\r\n<\/code><\/pre>\n<p>&#8216;unit&#8217;\u306f\u3001\u8a08\u7b97\u3059\u308b\u6642\u9593\u9593\u9694\u306e\u5358\u4f4d\u3092\u793a\u3057\u3001YEAR\u3001MONTH\u3001DAY\u3001HOUR\u3001MINUTE\u3001SECOND\u306e\u3044\u305a\u308c\u304b\u306e\u5024\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002start_date\u3068end_date\u306f\u3001\u305d\u308c\u305e\u308c\u958b\u59cb\u6642\u9593\u30b9\u30bf\u30f3\u30d7\u3068\u7d42\u4e86\u6642\u9593\u30b9\u30bf\u30f3\u30d7\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u30012\u3064\u306e\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u9593\u306e\u65e5\u6570\u306e\u5dee\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u6b21\u306eSQL\u6587\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">SELECT<\/span> DATEDIFF(<span class=\"hljs-keyword\">DAY<\/span>, <span class=\"hljs-string\">'2022-01-01'<\/span>, <span class=\"hljs-string\">'2022-01-10'<\/span>);\r\n<\/code><\/pre>\n<p>\u3053\u306e\u6587\u306f\u30019\u3092\u8fd4\u3059\u3053\u3068\u3067\u30012\u3064\u306e\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306e\u9593\u306b9\u65e5\u306e\u5dee\u304c\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SQL\u3067\u306f\u3001DATEDIFF\u95a2\u6570\u3092\u4f7f\u7528\u3057\u30662\u3064\u306e\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u9593\u306e\u6642\u9593\u5dee\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5177\u4f53\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\uff1a SELECT DATEDIFF(&#8216;unit&#8217;, start_date, end_date); [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[119,593,699,594,698],"class_list":["post-5253","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-sql","tag-593","tag-699","tag-594","tag-698"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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