{"id":281,"date":"2022-06-27T15:46:52","date_gmt":"2022-06-27T06:46:52","guid":{"rendered":"https:\/\/dozzing.kr\/wordpress\/?p=281"},"modified":"2025-10-24T11:54:13","modified_gmt":"2025-10-24T02:54:13","slug":"mysql-%ec%a4%91%eb%b3%b5-%ec%a0%9c%ea%b1%b0%ed%95%98%ea%b8%b0-%e2%ad%90%e2%ad%90-%ed%94%84%eb%a1%9c%ea%b7%b8%eb%9e%98%eb%a8%b8%ec%8a%a4","status":"publish","type":"post","link":"https:\/\/blog.dozzing.kr\/?p=281","title":{"rendered":"[MYSQL] \uc911\ubcf5 \uc81c\uac70\ud558\uae30 \u2b50\u2b50 \u2013 \ud504\ub85c\uadf8\ub798\uba38\uc2a4"},"content":{"rendered":"<h2>\ud83d\udcab \ubb38\uc81c<\/h2>\n<p><a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/blog.dozzing.kr\/wp-content\/uploads\/2023\/06\/wp_editor_md_e0a8a431394747150bcdfec2dcd98314.jpg\"><img decoding=\"async\" src=\"https:\/\/blog.dozzing.kr\/wp-content\/uploads\/2023\/06\/wp_editor_md_e0a8a431394747150bcdfec2dcd98314.jpg\" alt=\"\" \/><\/a><br \/>\n\u00a0<\/p>\n<h2>\ud83d\udcab CODE<\/h2>\n<pre><code class=\"language-sql line-numbers\">SELECT COUNT(DISTINCT NAME) AS count\nFROM ANIMAL_INS\nWHERE NAME IS NOT NULL;\n<\/code><\/pre>\n<p>\u00a0<\/p>\n<h2>\ud83d\udcab \ud480\uc774 \uc870\uac74<\/h2>\n<h5>1. \ub3d9\ubb3c\uc758 \uc774\ub984\uc740 \uba87 \uac1c\uc778\uc9c0 \uc870\ud68c<\/h5>\n<h5>2. \uc774\ub984\uc774 NULL\uc778 \uacbd\uc6b0\ub294 \uc9d1\uacc4 X<\/h5>\n<h5>3. \uc911\ubcf5\ub418\ub294 \uc774\ub984\uc740 \ud558\ub098<\/h5>\n<p>\u00a0<\/p>\n<h2>\ud83d\udcab \ud480\uc774<\/h2>\n<h5>1. SELECT COUNT(DISTINCT NAME) AS count<\/h5>\n<ul>\n<li>COUNT()\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac2f\uc218 \uc870\ud68c<\/li>\n<li>DISTINCT\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub3d9\ubb3c\uc758 \uc774\ub984(NAME) \uc911\ubcf5 \uc81c\uac70<\/li>\n<li>AS\ub97c \uc0ac\uc6a9\ud558\uc5ec count\ub85c \ubcc4\uce6d \uc9c0\uc815<\/li>\n<\/ul>\n<h5>2. WHERE NAME IS NOT NULL<\/h5>\n<ul>\n<li>\uc870\uac74 : \ub3d9\ubb3c\uc758 \uc774\ub984(NAME)\uc774 NULL\uc774 \uc544\ub2cc \uacbd\uc6b0<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udcab \ubb38\uc81c \u00a0 \ud83d\udcab CODE SELECT COUNT(DISTINCT NAME) AS count FROM ANIMAL_INS WHERE NAME IS NOT NULL; \u00a0 \ud83d\udcab \ud480\uc774 \uc870\uac74 1. \ub3d9\ubb3c\uc758 \uc774\ub984\uc740 \uba87 \uac1c\uc778\uc9c0 \uc870\ud68c 2. \uc774\ub984\uc774 NULL\uc778 \uacbd\uc6b0\ub294 \uc9d1\uacc4 X 3. \uc911\ubcf5\ub418\ub294 \uc774\ub984\uc740 \ud558\ub098 \u00a0 \ud83d\udcab \ud480\uc774 1. SELECT COUNT(DISTINCT NAME) AS count COUNT()\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac2f\uc218 \uc870\ud68c DISTINCT\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub3d9\ubb3c\uc758 \uc774\ub984(NAME) \uc911\ubcf5 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,9],"tags":[27,17,7,19,20,12,11,16,15,18,10],"class_list":{"0":"post-281","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-database","7":"category-sql","8":"tag-27","9":"tag-database","10":"tag-db","11":"tag-max","12":"tag-min","13":"tag-mysql","14":"tag-programmers","15":"tag-sql","17":"tag-sum","18":"tag-10"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[MYSQL] \uc911\ubcf5 \uc81c\uac70\ud558\uae30 \u2b50\u2b50 \u2013 \ud504\ub85c\uadf8\ub798\uba38\uc2a4 - Dozzing World<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.dozzing.kr\/?p=281\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[MYSQL] \uc911\ubcf5 \uc81c\uac70\ud558\uae30 \u2b50\u2b50 \u2013 \ud504\ub85c\uadf8\ub798\uba38\uc2a4 - Dozzing World\" \/>\n<meta property=\"og:description\" content=\"\ud83d\udcab \ubb38\uc81c \u00a0 \ud83d\udcab CODE SELECT COUNT(DISTINCT NAME) AS count FROM ANIMAL_INS WHERE NAME IS NOT NULL; \u00a0 \ud83d\udcab \ud480\uc774 \uc870\uac74 1. \ub3d9\ubb3c\uc758 \uc774\ub984\uc740 \uba87 \uac1c\uc778\uc9c0 \uc870\ud68c 2. \uc774\ub984\uc774 NULL\uc778 \uacbd\uc6b0\ub294 \uc9d1\uacc4 X 3. \uc911\ubcf5\ub418\ub294 \uc774\ub984\uc740 \ud558\ub098 \u00a0 \ud83d\udcab \ud480\uc774 1. 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