{"id":147,"date":"2014-06-02T13:05:19","date_gmt":"2014-06-02T04:05:19","guid":{"rendered":"http:\/\/www.dbsheetclient.jp\/blog\/?p=147"},"modified":"2018-06-27T16:50:27","modified_gmt":"2018-06-27T07:50:27","slug":"147","status":"publish","type":"post","link":"https:\/\/www.dbsheetclient.jp\/blog\/?p=147","title":{"rendered":"SQL \u6bd4\u8f03\u95a2\u6570(Greatest\u3001Least\uff09\u306b\u3064\u3044\u3066"},"content":{"rendered":"

IT\u30b3\u30fc\u30c7\u30a3\u30cd\u30fc\u30bf\u306e\u30b7\u30e5\u30a6\u3067\u3059\u3002 \"\u516c\u5712_4\"<\/a><\/p>\n

\u304a\u4e45\u3057\u3076\u308a\u3067\u3059\u3002<\/p>\n

\uff1c\u672c\u65e5\u306e\u984c\u6750\uff1e
<\/strong>\u6bd4\u8f03\u95a2\u6570\u306b\u3064\u3044\u3066<\/p>\n

\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u9055\u3044\u306b\u3088\u3063\u3066\u3001\u3042\u308bDB\u3067\u306f\u4f7f\u7528\u3067\u304d\u308b\u95a2\u6570\u304c\u3001\u5225\u306eDB\u3067\u306f\u4f7f\u7528\u3067\u304d\u306a\u3044\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u4e00\u4f8b\u3068\u3057\u3066\u3001\u8907\u6570\u9805\u76ee\u306e\u6700\u5927\u5024\u30fb\u6700\u5c0f\u5024\u3092\u53d6\u5f97\u3059\u308bSQL\u3092\u3001\u4eca\u56de\u306f\u898b\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304cOracle\u306e\u5834\u5408\u306b\u306f\u3001GREATEST\u95a2\u6570\u30fbLEAST\u95a2\u6570\u3068\u3044\u3046\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u4f8b\uff09\u91d1\u984d\u306b\u95a2\u3059\u308b3\u3064\u306e\u9805\u76ee\u306e\u4e2d\u304b\u3089\u6700\u5927\u5024\u3092\u6c42\u3081\u308b\u3002\u5177\u4f53\u7684\u306b\u306f<\/p>\n

item_no | priceA | priceB | priceC |
—————————————————–
item01\u00a0 |\u00a0 6000 |\u00a0 2000 |\u00a0 3000
item02\u00a0 |\u00a0 1000 |\u00a0 7500 |\u00a0 4000
item03\u00a0 | \u00a01500 | \u00a03000 | \u00a08000<\/p>\n

\u3068\u3044\u3046\u30c6\u30fc\u30d6\u30eb\u304c\u3042\u3063\u305f\u5834\u5408\u306b\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7d50\u679c\u3092\u51fa\u3057\u305f\u3044\u3068\u3057\u307e\u3059\u3002<\/p>\n

item_no | \u6700\u5927\u5024 | \u6700\u5c0f\u5024
——————————————
item01\u00a0 |\u00a0 6000 |\u00a0 2000
item02\u00a0 |\u00a0 7500 |\u00a0 1000
item03\u00a0 |\u00a0 8000 |\u00a0 1500<\/p>\n

SQL> SELECT item_no
, GREATEST( priceA, priceB, priceC ) AS \u6700\u5927\u5024
, LEAST( priceA, priceB, priceC ) AS \u6700\u5c0f\u5024
FROM \u30c6\u30fc\u30d6\u30eb\u540d;<\/p>\n

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

\u3053\u308c\u306f\u3001MySQL\u3067\u3082\u540c\u69d8\u306e\u95a2\u6570\u304c\u3042\u308a\u307e\u3059\u3002
\u3000GREATEST()\u3001LEAST()<\/p>\n

\u4e0a\u8a18\u3092SQL Server\u3067\u884c\u304a\u3046\u3068\u3059\u308b\u3068\u3001\u540c\u69d8\u306e\u95a2\u6570\u304c\u306a\u3044\u305f\u3081\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306aSQL\u3092\u5b9f\u884c\u3059\u308b\u304b\u305f\u3061\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

SELECT \u00a0item_no, MAX(price1) AS \u6700\u5927\u5024, MIN(price2) AS \u6700\u5c0f\u5024 FROM
(\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0SELECT item_no, priceA AS price1, priceA AS price2 FROM \u30c6\u30fc\u30d6\u30eb\u540d
UNION ALL SELECT item_no, priceB AS price1, priceB AS price2 FROM \u30c6\u30fc\u30d6\u30eb\u540d
UNION ALL SELECT item_no, priceC AS price1, priceC AS price2 FROM \u30c6\u30fc\u30d6\u30eb\u540d
) AS TBL
GROUP BY item_no
ORDER BY item_no;<\/p>\n

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

\u4eca\u65e5\u306f\u4ee5\u4e0a\u307e\u3067
<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

IT\u30b3\u30fc\u30c7\u30a3\u30cd\u30fc\u30bf\u306e\u30b7\u30e5\u30a6\u3067\u3059\u3002 \u304a\u4e45\u3057\u3076\u308a\u3067\u3059\u3002 \uff1c\u672c\u65e5\u306e\u984c\u6750\uff1e\u6bd4\u8f03\u95a2\u6570\u306b\u3064\u3044\u3066 \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u9055\u3044\u306b\u3088\u3063\u3066\u3001\u3042\u308bDB\u3067\u306f\u4f7f\u7528\u3067\u304d\u308b\u95a2\u6570\u304c\u3001\u5225\u306eDB\u3067\u306f\u4f7f\u7528\u3067\u304d\u306a\u3044\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u4e00\u4f8b\u3068\u3057\u3066\u3001\u8907\u6570\u9805\u76ee\u306e\u6700\u5927\u5024\u30fb\u6700 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[9],"tags":[],"class_list":["post-147","post","type-post","status-publish","format-standard","hentry","category-9"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/147","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=147"}],"version-history":[{"count":6,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/147\/revisions"}],"predecessor-version":[{"id":1990,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/147\/revisions\/1990"}],"wp:attachment":[{"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=147"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=147"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dbsheetclient.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}