MySQL\u3067time\u578b\u30c7\u30fc\u30bf\u304b\u3089int\u578b\u30c7\u30fc\u30bf\u306e\u6e1b\u7b97\u3092\u884c\u3044\u3001\u6e1b\u7b97\u5f8c\u306e\u30c7\u30fc\u30bf\u3092\u691c\u7d22\u6761\u4ef6\u306b\u542b\u3081\u305f\u3044\u3068\u3044\u3063\u305f\u30b1\u30fc\u30b9\u304c\u3042\u3063\u305f\u3002\u5177\u4f53\u4f8b\u3001\u5bfe\u5fdc\u7b56\u3092\u4ee5\u4e0b\u306b\u30e1\u30e2\u3002<\/p>\n
<\/p>\n
\u98f2\u98df\u5e97\u306e\u60c5\u5831\u3092MySQL\u3067\u53d6\u308a\u6271\u3046\u6848\u4ef6\u3067\u55b6\u696d\u958b\u59cb\u6642\u9593(time\u578b)\u3001\u55b6\u696d\u7d42\u4e86\u6642\u9593(time\u578b)\u3001\u55b6\u696d\u7d42\u4e86\u304b\u3089\u25cb\u5206\u524d\u306b\u6ce8\u6587\u53d7\u4ed8\u7d42\u4e86\u306b\u306a\u308b\u30e9\u30b9\u30c8\u30aa\u30fc\u30c0\u30fc(int\u578b)\u306e\u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u3057\u305f\u3002\u4ee5\u4e0b\u304c\u30b5\u30f3\u30d7\u30eb\u3068\u306a\u308b\u3002<\/p>\n
mysql> show columns from shop;\r\n+------------+------------------+------+-----+---------+----------------+\r\n| Field | Type | Null | Key | Default | Extra |\r\n+------------+------------------+------+-----+---------+----------------+\r\n| id | int(11) | NO | PRI | NULL | auto_increment |\r\n| name | varchar(255) | NO | | NULL | |\r\n| start_time | time | YES | | NULL | |\r\n| end_time | time | YES | | NULL | |\r\n| last_order | int(11) unsigned | NO | | NULL | |\r\n+------------+------------------+------+-----+---------+----------------+\r\n\r\nmysql> select * from shop;\r\n+----+-----------+------------+----------+------------+\r\n| id | name | start_time | end_time | last_order |\r\n+----+-----------+------------+----------+------------+\r\n| 1 | \u725b\u89d2 | 10:00:00 | 22:00:00 | 30 |\r\n| 2 | \u53d9\u3005\u82d1 | 09:00:00 | 19:00:00 | 15 |\r\n+----+-----------+------------+----------+------------+<\/pre>\n<\/p>\n
\u55b6\u696d\u4e2d\u306e\u5e97\u8217\u306e\u307f\u8868\u793a<\/h2>\n
\u55b6\u696d\u4e2d\u306e\u5e97\u8217\u306e\u307f\u8868\u793a\u3055\u305b\u305f\u3044\u5834\u5408\u3001\u3088\u304f\u3042\u308b\u30d1\u30bf\u30fc\u30f3\u3060\u3068\u4ee5\u4e0b\u306b\u306a\u308b\u304b\u3068\u601d\u308f\u308c\u308b\u3002<\/p>\n
SELECT * \r\nFROM shop \r\nWHERE start_time <= now() \r\nAND end_time >= now();<\/pre>\n\u305f\u3060\u3001\u4eca\u56de\u306f\u55b6\u696d\u7d42\u4e86\u6642\u9593\u3067\u306f\u306a\u304f\u6ce8\u6587\u53d7\u4ed8\u7d42\u4e86\u6642\u306e\u6642\u9593\u3092\u8ef8\u306b\u3057\u305f\u304b\u3063\u305f\u3002\u3064\u307e\u308a\u300c\u55b6\u696d\u7d42\u4e86\u6642\u9593 - \u30e9\u30b9\u30c8\u30aa\u30fc\u30c0\u30fc\u306e\u5206\u6570\u300d\u3092\u62bd\u51fa\u3057\u3001\u305d\u306e\u5024\u3092\u691c\u7d22\u6761\u4ef6\u306b\u542b\u3081\u305f\u3044\u3002<\/p>\n
<\/p>\n
time\u578b\u30c7\u30fc\u30bf\u306e\u6e1b\u7b97<\/h2>\n
\/\/MySQL5.1\u306e\u5834\u5408\r\nSELECT \r\n *, \r\n SEC_TO_TIME (\r\n TIME_TO_SEC(end_time) - ( last_order * 60)\r\n ) AS last_time \r\nFROM shop;\r\n\r\n\/\/MySQL5.7\u306e\u5834\u5408\r\nSELECT \r\n *, \r\n ( end_time - INTERVAL last_order MINUTE ) AS last_time \r\nFROM shop;<\/pre>\n\u4e0a\u8a18SQL\u6587\u3092\u6253\u3064\u3068last_time\u30ab\u30e9\u30e0\u306b\u6e1b\u7b97\u5f8c\u306e\u6642\u9593\u304c\u5165\u308b\u3002<\/p>\n
\u5c1a\u3001MySQL\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u5bfe\u5fdc\u65b9\u6cd5\u304c\u7570\u306a\u308b\u3063\u307d\u3044\u3002ver5.7\u306e\u8a18\u8ff0\u30925.1\u3067\u884c\u3063\u3066\u3082NULL\u304c\u8fd4\u3063\u3066\u304f\u308b\u306e\u3067\u6ce8\u610f\u3002<\/p>\n
5.1\u3060\u3068end_time\u3068last_order\u3092\u79d2\u6570\u306b\u5909\u63db\u3057\u305f\u5f8c\u306b\u6e1b\u7b97\u3057\u3001\u305d\u306e\u7d50\u679c\u3092time\u578b\u306b\u5909\u63db\u3057\u306a\u304a\u3059\u3068\u3044\u3063\u305f\u975e\u5e38\u306b\u9762\u5012\u304f\u3055\u3044\u624b\u9806\u3068\u306a\u308b\u3002<\/p>\n
<\/p>\n
\u6e1b\u7b97\u5f8c\u306e\u30c7\u30fc\u30bf\u3092\u691c\u7d22\u6761\u4ef6\u306b\u542b\u3081\u308b<\/h2>\n
\/\/MySQL5.1\u306e\u5834\u5408\r\nSELECT \r\n *, \r\n SEC_TO_TIME (\r\n TIME_TO_SEC(end_time) - ( last_order * 60)\r\n ) AS last_time,\r\n IF(\r\n start_time <= now() &&\r\n SEC_TO_TIME (\r\n TIME_TO_SEC(end_time) - ( last_order * 60)\r\n ) >= now(), 1, 0\r\n ) AS open_flg\r\nFROM shop\r\nHAVING open_flg = 1;\r\n\r\n\/\/MySQL5.7\u306e\u5834\u5408\r\nSELECT \r\n *, \r\n ( end_time - INTERVAL last_order MINUTE ) AS last_time, \r\n IF(\r\n start_time <= now() &&\r\n ( end_time - INTERVAL last_order MINUTE ) >= now(), 1, 0\r\n ) AS open_flg\r\nFROM shop\r\nHAVING open_flg = 1;<\/pre>\n\u300c\u73fe\u5728\u6642\u523b\u304cstart_time\u3088\u308a\u5927\u304d\u3044(\u55b6\u696d\u958b\u59cb\u6642\u9593\u3092\u904e\u304e\u3066\u3044\u308b)\u300d\u304b\u3064\u300c\u73fe\u5728\u6642\u523b\u304clast_time\u3088\u308a\u5c0f\u3055\u3044(\u6ce8\u6587\u53d7\u4ed8\u7d42\u4e86\u6642\u9593\u524d)\u300d\u306e\u5834\u5408\u306fopen_flg\u30ab\u30e9\u30e0\u306f1\u3001\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f0\u3068\u306a\u308b\u3002<\/p>\n