{"id":890,"date":"2009-04-03T16:18:45","date_gmt":"2009-04-03T07:18:45","guid":{"rendered":"http:\/\/gigasmegas.com\/?p=890"},"modified":"2009-04-03T16:33:28","modified_gmt":"2009-04-03T07:33:28","slug":"sql-server-2008-tips-avg%e9%96%a2%e6%95%b0%e3%81%a7%e3%82%b0%e3%83%ab%e3%83%bc%e3%83%97%e5%86%85%e3%81%ae%e5%80%a4%e3%81%ae%e5%b9%b3%e5%9d%87%e3%82%92%e5%87%ba%e3%81%99%e3%80%82","status":"publish","type":"post","link":"http:\/\/gigasmegas.com\/?p=890","title":{"rendered":"SQL SERVER 2008 Tips AVG\u95a2\u6570\u3067\u30b0\u30eb\u30fc\u30d7\u5185\u306e\u5024\u306e\u5e73\u5747\u3092\u51fa\u3059\u3002"},"content":{"rendered":"

\"SQL<\/a><\/p>\n

photo by vintagecottontshirts<\/a><\/address>\n

SQL Server 2008 \u3067\u3001\u30b0\u30eb\u30fc\u30d7\u5185\u306e\u5024\u306e\u5e73\u5747\u3092\u51fa\u3057\u305f\u3044\u5834\u5408\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u4f7f\u7528\u65b9\u6cd5\u306f\u3044\u305f\u3063\u3066\u3001\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u3002<\/p>\n

<\/p>\n

\u69cb\u6587<\/h4>\n

AVG ( [ ALL | DISTINCT ] expression ) <\/p>\n

\u5f15\u6570<\/dl>\n
ALL<\/dt>\n
\u91cd\u8907\u884c\u3092\u542b\u3080\u3059\u3079\u3066\u306e\u5024\u3092\u5bfe\u8c61\u3068\u3057\u307e\u3059\u3002ALL \u304c\u65e2\u5b9a\u5024\u3067\u3059\u3002<\/dl>\n
DISTINCT<\/dt>\n
\u91cd\u8907\u884c\u3092\u9664\u5916\u3057\u305f\u3001\u7d50\u679c\u30bb\u30c3\u30c8\u306e\u5024\u3092\u5bfe\u8c61\u3068\u3057\u307e\u3059\u3002<\/dl>\n
expression <\/dt>\n
AVG\u95a2\u6570\u3067\u5e73\u5747\u3092\u51fa\u3057\u305f\u3044\u5bfe\u8c61\u9805\u76ee\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/dl>\n
\u89e3\u8aac<\/h5>\n
\u5bfe\u8c61\u3068\u306a\u308b\u5024<\/dt>\n
\u5bfe\u8c61\u30c7\u30fc\u30bf\u5024\u304cNull\u5024\u306e\u5834\u5408\u306f\u3001\u7121\u8996\u3055\u308c\u307e\u3059\u3002<\/dl>\n
\u30a8\u30e9\u30fc\u304c\u8fd4\u3055\u308c\u308b\u6761\u4ef6<\/dt>\n
\u5408\u8a08\u304c\u623b\u308a\u5024\u306e\u30c7\u30fc\u30bf\u578b\u306e\u6700\u5927\u5024\u3092\u8d85\u3048\u308b\u5834\u5408<\/dl>\n

AVG\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u4f8b<\/h4>\n

SUM \u95a2\u6570\u3068 AVG \u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u8a08\u7b97\u3059\u308b<\/h5>\n

\u4f8b\uff1a\u6210\u7e3e\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u3001\u3042\u308b\u751f\u5f92\u306e\u5e73\u5747\u70b9\u3068\u3001\u5408\u8a08\u70b9\u3092\u53d6\u5f97\u3002<\/p>\n

\r\nSELECT AVG(\u70b9\u6570)as '\u5e73\u5747\u70b9',\r\nSUM  (\u70b9\u6570) as '\u5408\u8a08\u70b9'\r\nFROM \u6210\u7e3e\r\nWHERE \u751f\u5f92_ID = 30;\r\n<\/pre>\n
GROUP BY \u53e5\u3092\u4f34\u3046 SUM \u95a2\u6570\u3068 AVG \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b<\/h5>\n
\u6210\u7e3e\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u3001\u30af\u30e9\u30b9\u5225\u751f\u5f92\u306e\u5e73\u5747\u70b9\u3068\u3001\u5408\u8a08\u70b9\u3092\u53d6\u5f97\u3002<\/p>\n
\r\nSELECT \u30af\u30e9\u30b9\u756a\u53f7, AVG(\u70b9\u6570)as '\u5e73\u5747\u70b9', SUM(\u70b9\u6570) '\u5408\u8a08\u70b9'\r\nFROM \u6210\u7e3e\r\nGROUP BY \u30af\u30e9\u30b9\u756a\u53f7;\r\n<\/pre>\n
DISTINCT \u3092\u4f34\u3046 AVG \u3092\u4f7f\u7528\u3059\u308b<\/h5>\n
\u6210\u7e3e\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u3001\u540c\u3058\u70b9\u6570\u306f\u9664\u5916\u3057\u305f\u5e73\u5747\u70b9\u3092\u53d6\u5f97\u3002
\n\uff08\u3053\u308c\u306f\u3001\u305f\u3068\u3048\u304c\u304a\u304b\u3057\u3044\u2026\u3053\u3093\u306a\u8a08\u7b97\u610f\u5473\u306a\u3044\u306a\uff5e\uff09<\/p>\n
\r\nSELECT AVG(DISTINCT \u70b9\u6570)\r\nFROM \u6210\u7e3e;\r\n<\/pre>\n
DISTINCT \u3092\u4f34\u308f\u306a\u3044 AVG \u3092\u4f7f\u7528\u3059\u308b<\/h5>\n
\u4e00\u756a\u3001\u5358\u7d14\u306a\u5f0f\u3067\u3059\u3002
\n\u6210\u7e3e\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u3001\u5e73\u5747\u70b9\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/p>\n
\r\nSELECT AVG(\u70b9\u6570)\r\nFROM \u6210\u7e3e;\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
photo by vintagecottontshirts SQL Server 2008 \u3067\u3001\u30b0\u30eb\u30fc\u30d7\u5185\u306e\u5024\u306e\u5e73\u5747\u3092\u51fa\u3057\u305f\u3044\u5834\u5408\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u4f7f\u7528\u65b9\u6cd5\u306f\u3044\u305f\u3063\u3066\u3001\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31,32],"tags":[272,250,254,157,322],"class_list":["post-890","post","type-post","status-publish","format-standard","hentry","category-sqlserver","category-database","tag-272","tag-sql","tag-tips","tag-157","tag-322"],"_links":{"self":[{"href":"http:\/\/gigasmegas.com\/index.php?rest_route=\/wp\/v2\/posts\/890","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/gigasmegas.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/gigasmegas.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/gigasmegas.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/gigasmegas.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=890"}],"version-history":[{"count":4,"href":"http:\/\/gigasmegas.com\/index.php?rest_route=\/wp\/v2\/posts\/890\/revisions"}],"predecessor-version":[{"id":893,"href":"http:\/\/gigasmegas.com\/index.php?rest_route=\/wp\/v2\/posts\/890\/revisions\/893"}],"wp:attachment":[{"href":"http:\/\/gigasmegas.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/gigasmegas.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=890"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/gigasmegas.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}