{"id":1282,"date":"2017-06-21T22:47:56","date_gmt":"2017-06-21T13:47:56","guid":{"rendered":"https:\/\/www.beeete2.com\/blog\/?p=1282"},"modified":"2018-02-21T22:47:17","modified_gmt":"2018-02-21T13:47:17","slug":"mysql%ef%bc%88mariadb%ef%bc%89%e3%81%a7postgresql%e3%81%aegenerate_series%e3%81%a3%e3%81%bd%e3%81%84%e3%81%93%e3%81%a8%e3%82%92%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/www.beeete2.com\/blog\/?p=1282","title":{"rendered":"MySQL\uff08MariaDB\uff09\u3067PostgreSQL\u306egenerate_series\u3063\u307d\u3044\u3053\u3068\u3092\u3059\u308b"},"content":{"rendered":"

PostgreSQL\u306b\u306fgenerate_series<\/code>\u3068\u3044\u3046\u96c6\u5408\u3092\u8fd4\u3059\u95a2\u6570\u304c\u3042\u308b\u306e\u3067\u3059\u304c\u3001\u3053\u308c\u3092\u4f7f\u3046\u3068\u9023\u7d9a\u3057\u305f\u5024\u3092\u751f\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\n\u4f8b\u3048\u3070\u5404\u30ec\u30b3\u30fc\u30c9\u306b\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b1%\u5358\u4f4d\u306e\u5ea6\u6570\uff08frequency\uff09\u306b\u5bfe\u3057\u3066\u3001\u305d\u308c\u305e\u308c\u306e\u5ea6\u6570\u306e\u5408\u8a08\u6570\u3092\u6b6f\u629c\u3051\u306b\u305b\u305a\u62bd\u51fa\u3057\u305f\u3044\u3068\u3057\u307e\u3059\u3002
\n\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30c6\u30fc\u30d6\u30eb\u304c\u3042\u3063\u305f\u3068\u3057\u307e\u3059\u3002
\n[sql]
\ncreate table book_stores(
\n book_id int not null
\n , stored_at timestamp not null
\n , value int not null
\n);
\n[\/sql]
\nvalue<\/code>\u306b\u306f\u5ea6\u6570\uff080\u304b\u3089100\u306e\u5024\uff09\u304c\u5165\u3063\u3066\u3044\u308b\u3068\u601d\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

PostgreSQL\u306e\u5834\u5408<\/h2>\n

PostgreSQL\u306e\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306aSQL\u6587\u3092\u5b9f\u884c\u3059\u308b\u3068\u30ec\u30b3\u30fc\u30c9\u306b\u5b58\u5728\u3057\u306a\u3044\u5ea6\u6570\u3060\u3063\u305f\u3057\u3066\u3082\u305d\u306e\u5ea6\u6570\u3092\u6b6f\u629c\u3051\u306b\u3059\u308b\u3053\u3068\u306a\u304f\u62bd\u51fa\u3067\u304d\u307e\u3059\u3002
\n[sql]
\nselect
\n frequences.frequency
\n , (
\n select
\n count(*)
\n from
\n book_stores
\n where
\n book_id = 1
\n and value = frequency
\n ) AS amount_value
\nfrom
\n (select generate_series(0, 100) as frequency) AS frequences
\n;
\n[\/sql]
\n\u5b9f\u884c\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7d50\u679c\u304c\u5e30\u3063\u3066\u304d\u307e\u3059\u3002
\n[text]
\n frequency | values
\n———–+——–
\n 0 | 0
\n 1 | 1
\n 2 | 1
\n 3 | 2
\n 4 | 1
\n 5 | 1
\n 6 | 0
\n 7 | 2
\n 8 | 0
\n 9 | 1
\n======\uff08\u7565\uff09========
\n 99 | 1
\n 100 | 0
\n(101 rows)
\n[\/text]
\n\u3053\u3093\u306a\u611f\u3058\u3067SQL\u6587\u3067\u9023\u7d9a\u3057\u305f\u5024\u3092\u3068\u308c\u308b\u306e\u3067\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5074\u3067\u6b6f\u629c\u3051\u3092\u8a31\u5bb9\u3057\u306a\u3044\u5834\u5408\u306fSQL\u6587\u3067\u5b8c\u7d50\u3067\u304d\u307e\u3059\u3002<\/p>\n

MariaDB\u306e\u5834\u5408<\/h2>\n

\u8272\u3005\u8abf\u3079\u305f\u3068\u3053\u308dPostgreSQL\u306egenerate_series<\/code>\u3068\u540c\u69d8\u306a\u52d5\u304d\u3092\u3059\u308b\u95a2\u6570\u306f\u306a\u3055\u305d\u3046\u3067\u3057\u305f\u3002
\n\u305f\u3060\u6761\u4ef6\u306f\u3064\u3044\u3066\u3057\u307e\u3046\u306e\u3067\u3059\u304c\u3001\u30e6\u30fc\u30b6\u30fc\u5909\u6570\u3092\u4f7f\u3046\u3053\u3068\u3067\u5bfe\u5fdc\u3067\u304d\u305d\u3046\u3067\u3059\u3002
\n\u4ee5\u4e0b\u306e\u3088\u3046\u306aSQL\u6587\u306b\u306a\u308a\u307e\u3059\u3002
\n[sql]
\nselect
\n @num := @num + 1 as frequency
\n , (
\n select
\n count(*)
\n from
\n book_stores
\n where
\n book_id = 1
\n and value = @num
\n ) as value
\nfrom
\n book_stores
\n , (select @num := – 1) num
\nlimit
\n 101
\n;
\n[\/sql]
\n\u5b9f\u884c\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7d50\u679c\u304c\u5e30\u3063\u3066\u304d\u307e\u3059\u3002
\n[text]
\nfrequency value
\n0 0
\n1 1
\n2 1
\n3 2
\n4 1
\n5 1
\n6 0
\n7 2
\n8 0
\n9 1
\n======\uff08\u7565\uff09========
\n99 1
\n100 0
\n[\/text]
\n\u6ce8\u610f\u70b9\u3068\u3057\u3066\u306f\u5bfe\u8c61\u3068\u306a\u308b\u30c6\u30fc\u30d6\u30eb\u306e\u30ec\u30b3\u30fc\u30c9\u6570\u304c\u751f\u6210\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u7bc4\u56f2\u6570\u3088\u308a\u3082\u591a\u3044\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002
\n\u4f8b\u3048\u3070\u30010\u304b\u3089100\u307e\u3067\u306e101\u500b\u306e\u305d\u308c\u305e\u308c\u306e\u5408\u8a08\u3092\u53d6\u5f97\u3057\u3066\u3044\u308b\u306e\u3067\u5bfe\u8c61\u3068\u306a\u308b\u30c6\u30fc\u30d6\u30eb\u306e\u30ec\u30b3\u30fc\u30c9\u6570\u306f101\u30ec\u30b3\u30fc\u30c9\u4ee5\u4e0a\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002
\n\u5b9f\u969b\u3069\u3046\u306a\u308b\u306e\u304b\u8a66\u3057\u3066\u307f\u307e\u3057\u305f\u3002
\n\u5bfe\u8c61\u3068\u306a\u308b\u30c6\u30fc\u30d6\u30eb\u306e\u30ec\u30b3\u30fc\u30c9\u6570\u309210\u30ec\u30b3\u30fc\u30c9\u306b\u3057\u3066\u307f\u3066\u540c\u3058SQL\u6587\u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3057\u305f\u3002
\n[text]
\nfrequency value
\n0 0
\n1 0
\n2 1
\n3 0
\n4 0
\n5 0
\n6 0
\n7 0
\n8 0
\n9 0
\n[\/text]
\n\u6700\u521d\u306e10\u500b\u307e\u3067\u3057\u304b\u5024\u304c\u751f\u6210\u3055\u308c\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n

\u307e\u3068\u3081<\/h2>\n

\u305d\u3093\u306a\u306b\u4f7f\u7528\u7528\u9014\u306f\u591a\u304f\u306a\u3044\u306e\u3067\u3059\u304cgenerate_series<\/code>\u306f\u65e5\u4ed8\u306b\u5bfe\u3057\u3066\u3082\u4f7f\u3048\u308b\u306e\u3067\u671f\u9593\u3092\u4f5c\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002
\n\u30a2\u30d7\u30ea\u5074\u3067\u3082\u5bfe\u5fdc\u3067\u304d\u308b\u306e\u3067\u5fc5\u9808\u306a\u6a5f\u80fd\u3067\u306f\u306a\u3044\u306e\u3067\u3059\u304c\u3001SQL\u3067\u5b8c\u7d50\u3067\u304d\u308b\u3068\u3053\u308d\u306f\u5b8c\u7d50\u3055\u305b\u3066\u3082\u3088\u3044\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u4eca\u56de\u306e\u30b5\u30f3\u30d7\u30eb<\/h2>\n

postgres-mysql-generate_series<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

PostgreSQL\u306b\u306fgenerate_series\u3068\u3044\u3046\u96c6\u5408\u3092\u8fd4\u3059\u95a2\u6570\u304c\u3042\u308b\u306e\u3067\u3059\u304c\u3001\u3053\u308c\u3092\u4f7f\u3046\u3068\u9023\u7d9a\u3057\u305f\u5024\u3092\u751f\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u4f8b\u3048\u3070\u5404\u30ec\u30b3\u30fc\u30c9\u306b\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b1%\u5358\u4f4d\u306e\u5ea6\u6570\uff08freque … <\/p>\n","protected":false},"author":1,"featured_media":603,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[75],"tags":[76,12],"views":6845,"_links":{"self":[{"href":"https:\/\/www.beeete2.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1282"}],"collection":[{"href":"https:\/\/www.beeete2.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.beeete2.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.beeete2.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.beeete2.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1282"}],"version-history":[{"count":10,"href":"https:\/\/www.beeete2.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1282\/revisions"}],"predecessor-version":[{"id":1323,"href":"https:\/\/www.beeete2.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1282\/revisions\/1323"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.beeete2.com\/blog\/index.php?rest_route=\/wp\/v2\/media\/603"}],"wp:attachment":[{"href":"https:\/\/www.beeete2.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.beeete2.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.beeete2.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}