{"id":698,"date":"2021-10-02T23:40:22","date_gmt":"2021-10-02T14:40:22","guid":{"rendered":"https:\/\/suzutukiblog.com\/?p=698"},"modified":"2022-01-19T01:02:19","modified_gmt":"2022-01-18T16:02:19","slug":"mysql5","status":"publish","type":"post","link":"https:\/\/suzutukiblog.com\/index.php\/2021\/10\/02\/mysql5\/","title":{"rendered":"MySQL(\u305d\u306e\uff15 \u5217\u306b\u5225\u540d\u3092\u3064\u3051\u308b\u3001\u6761\u4ef6\u3092\u6307\u5b9a\u3057\u3066\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b(as,where,\u6f14\u7b97\u5b50))"},"content":{"rendered":"

\u305d\u306e\uff14\u304b\u3089\u7d9a\u304d\u307e\u3059<\/a><\/p>\n

1:\u5217\u306b\u5225\u540d\u3092\u3064\u3051\u308b<\/h3>\n

\u4f8b)\u5546\u54c1\u4e00\u89a7\u306ename,price\u3092\u305d\u308c\u305e\u308c\u65e5\u672c\u8a9e\u3067\u300c\u540d\u524d\u300d\u3068\u300c\u4fa1\u683c\u300d\u306b\u4fee\u6b63\u3057\u305f\u3044\uff01<\/strong><\/p>\n

\u7b54\u3048(as\u306f\u7701\u7565\u3067\u304d\u308b)<\/h3>\n

select name as \u540d\u524d,price as \u4fa1\u683c from products;<\/strong><\/p>\n

select name \u540d\u524d,price \u4fa1\u683c from products;<\/strong>\"\"<\/p>\n

2:\u5217\u306e\u5024\u306b\u5bfe\u3057\u3066\u6f14\u7b97\u3092\u884c\u3046<\/h3>\n

\u4f8b\uff1a\u5546\u54c1\u4e00\u89a7\u306b\u7a0e\u8fbc\u4fa1\u683c\u3092\u8ffd\u52a0\u3057\u305f\u3044\uff01<\/h3>\n

\"\"<\/h3>\n

<\/p>\n

\u7b54\u3048<\/h3>\n

select name \u540d\u524d,price \u4fa1\u683c, price * 1.10 \u7a0e\u8fbc\u4fa1\u683c from products;<\/strong><\/p>\n

\u203b\u30dd\u30a4\u30f3\u30c8<\/h3>\n

\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u62bd\u51fa\u3057\u305f\u7d50\u679c\u3092\u305d\u306e\u307e\u307e\u4f7f\u3046\u3060\u3051\u3067\u306f\u306a\u304f\u8a08\u7b97\u3057\u305f\u7d50\u679c\u3092\u51fa\u529b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n

3:\u6761\u4ef6\u3092\u6307\u5b9a\u3057\u3066\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u3000where\u53e5<\/h3>\n

\u4f8b\uff1a\u4fa1\u683c\u304c9800\u5186\u4ee5\u4e0a\u306e\u5546\u54c1\u4e00\u89a7\u304c\u6b32\u3057\u3044\uff01<\/strong><\/p>\n

\u30d2\u30f3\u30c8\uff1a\u5fc5\u8981\u306a\u5217\u306f\u540d\u524d<\/strong>\u3068\u4fa1\u683c<\/strong><\/p>\n

\u7b54\u3048<\/h3>\n

select name,price from products where price >= 9800;<\/strong>\"\"<\/p>\n

\u203b\u88dc\u8db3:\u4ee3\u8868\u7684\u306a\u6f14\u7b97\u5b50<\/h3>\n

=<\/strong>\u7b49\u3057\u3044
\n><\/strong> \u3088\u308a\u5927\u304d\u3044
\n>=<\/strong>\u4ee5\u4e0a
\n<<\/strong> \u3088\u308a\u5c0f\u3055\u3044
\n<=<\/strong> \u4ee5\u4e0b
\n<><\/strong>\u3000\u307e\u305f\u306f!=<\/strong>\u3000\u7b49\u3057\u304f\u306a\u3044
\nin<\/strong> \u3042\u308b\u5024\u304c\u5024\u30bb\u30c3\u30c8\u5185\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b
\nnot in<\/strong> \u5024\u304c\u5024\u30bb\u30c3\u30c8\u5185\u306b\u542b\u307e\u308c\u3066\u3044\u306a\u3044\u304b\u3069\u3046\u304b
\nis null<\/strong> \u3000\u5024\u304cnull<\/strong> \u304b\u3069\u3046\u304b
\nis not null<\/strong> \u5024\u304c null<\/strong> \u3067\u306f\u306a\u3044\u304b\u3069\u3046\u304b
\nlike<\/strong> \u30d1\u30bf\u30fc\u30f3\u30de\u30c3\u30c1\u30f3\u30b0\uff08\u3042\u3044\u307e\u3044\u691c\u7d22 \uff09
\nbetween\u30fb\u30fb\u30fband\u30fb\u30fb\u30fb<\/strong> \u5024\u304c\u5024\u306e\u7bc4\u56f2\u5185\u306b\u53ce\u307e\u3063\u3066\u3044\u308b\u304b<\/p>\n

\u7df4\u7fd2\u554f\u984c<\/h3>\n

1)products \u30c6\u30fc\u30d6\u30eb\u304b\u3089\u5168\u4ef6\u53d6\u5f97<\/strong><\/p>\n

select * from products;<\/strong><\/pre>\n
2)id\u304c1\u306e\u884c\u3092\u53d6\u5f97<\/strong><\/p>\n
select * from products where id =1;<\/strong><\/pre>\n
3)\u540d\u524d\u304c\u300c\u5546\u54c10003\u300d\u306e\u884c\u3092\u53d6\u5f97<\/strong><\/p>\n
select * from products where name ='\u5546\u54c10003';<\/strong><\/pre>\n
4)price\u304c1000\u3088\u308a\u5927\u304d\u3044\u884c\u3092\u53d6\u5f97<\/strong><\/p>\n
select * from products where price > 1000;<\/strong><\/pre>\n
5)price\u304c1000\u3088\u308a\u5c0f\u3055\u3044\u884c\u3092\u53d6\u5f97<\/strong><\/p>\n
select * from products where price < 1000;<\/strong><\/pre>\n
6)price\u304c100\u3067\u306a\u3044\u884c\u3092\u53d6\u5f97<\/strong><\/p>\n
select * from products where price <> 1000;<\/strong><\/pre>\n
7)\u5225\u89e3<\/strong><\/p>\n
select * from products where price != 1000;<\/strong><\/pre>\n
8)id\u304c1\u304b2\u304b3\u306e\u884c\u3092\u53d6\u5f97<\/strong><\/p>\n
select * from products where price id in(1,2,3);<\/strong><\/pre>\n
9)id\u304c1\u304b2\u304b3\u3067\u306f\u306a\u3044\u884c\u3092\u53d6\u5f97<\/strong><\/p>\n
select * from products where price id not in(1,2,3,);<\/strong><\/pre>\n
10)price\u304cnull\u3067\u306f\u306a\u3044\u884c\u3092\u53d6\u5f97<\/strong><\/p>\n
select * from products where price is not null;<\/strong><\/pre>\n
11)price\u304cnull\u306e\u884c\u3092\u53d6\u5f97<\/strong><\/p>\n
select * from products where price is null;<\/strong><\/pre>\n
12)price\u304c1000\u304b\u30891900\u306e\u884c\u3092\u53d6\u5f97<\/strong><\/p>\n
select * from products where price between 1000 and 1900;<\/strong><\/pre>\n
13)\u3053\u308c\u306f\u6b21\u306e\u3088\u3046\u306band\uff08\u8ad6\u7406\u7a4d\uff09\u3092\u4f7f\u3063\u3066\u3082\u304b\u3051\u308b<\/strong><\/p>\n
select * from products where price >=1000 and price <= 1900;<\/strong><\/pre>\n
14)\u4fa1\u683c\u304c1000\u5186\u307e\u305f\u306f2000\u5186\u306e\u884c\u3092\u53d6<\/strong>\u5f97<\/strong><\/p>\n
select * from products where price = 1000 or price =2000;<\/strong><\/pre>\n
\u305d\u306e6\u306b\u7d9a\u304d\u307e\u3059\u3002<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
\u305d\u306e\uff14\u304b\u3089\u7d9a\u304d\u307e\u3059 1:\u5217\u306b\u5225\u540d\u3092\u3064\u3051\u308b \u4f8b)\u5546\u54c1\u4e00\u89a7\u306ename,price\u3092\u305d\u308c\u305e\u308c\u65e5\u672c\u8a9e\u3067\u300c\u540d\u524d\u300d\u3068\u300c\u4fa1\u683c\u300d\u306b\u4fee\u6b63\u3057\u305f\u3044\uff01 \u7b54\u3048(as\u306f\u7701\u7565\u3067\u304d\u308b) select name as \u540d\u524d,price as \u4fa1\u683c fro […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[5,27],"tags":[],"class_list":["post-698","post","type-post","status-publish","format-standard","hentry","category-mysql","category-programming-note"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/posts\/698","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/comments?post=698"}],"version-history":[{"count":17,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/posts\/698\/revisions"}],"predecessor-version":[{"id":4355,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/posts\/698\/revisions\/4355"}],"wp:attachment":[{"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/media?parent=698"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/categories?post=698"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/tags?post=698"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}