11. ها داده ترکیب از هثالی
id title username created_time attr
1 Ham HaMo0n 2017-07-12 {"about":"I’ m a
programmer","mobile":"093
70272977","work":"lifeweb
"}
2 Ali Ali 2017-07-13 {"about":"I’ m a
programmer","mobile":"093
70272977","work":"doctor",
"site":"http://ali.com"}
یافته ساختار یافته ساختار نیمه
12. جدول ساخت
CREATE TABLE `users` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`title` varchar(255) NOT NULL,
`username` varchar(255) NOT NULL,
`created_time` timestamp NOT NULL DEFAULT current_timestamp(),
`attr` text NOT NULL,
PRIMARY KEY (`id`),
CHECK (json_valid(`attr`))
) ENGINE=InnoDB
13. داده درج
INSERT INTO users(`title`,`username`,`attr`) VALUES
("Ham","Hamoon",'{"about":"I’ m a programmer","mobile":"09370272977","
work":"lifeweb"}'),
("Ali","Ali",'{"about":"I’ m a programmer","mobile":"09370272977","
work":"doctor","site":"http://ali.com"}');
INSERT INTO users(`title`,`username`,`attr`) VALUES
("Ebi","ebrahim98","about:from iran")
17. Indexها فیلد کردن
EXPLAIN SELECT title,username FROM users WHERE `work` = 'lifeweb'
EXPLAIN SELECT title,username FROM users WHERE `work` = 'lifeweb'
ALTER TABLE `users` ADD INDEX `work` (`work`);