DROP TABLE IF EXISTS `data`;
CREATE TABLE IF NOT EXISTS `data` (
`id` varchar(15) NOT NULL,
`name` varchar(15) NOT NULL,
`age` varchar(3) NOT NULL,
`tel` varchar(15) NOT NULL,
`mes` text NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
SELECT * FROM `data` WHERE 1
SELECT `id`, `name`, `age`, `tel`, `mes` FROM `data` WHERE 1
INSERT INTO `data`(`id`, `name`, `age`, `tel`, `mes`) VALUES ([value-1],[value-2],[value-3],[value-4],[value-5])
UPDATE `data` SET `id`=[value-1],`name`=[value-2],`age`=[value-3],`tel`=[value-4],`mes`=[value-5] WHERE 1
DELETE FROM `data` WHERE 1
$sql = "SELECT COUNT(*) AS `行`, `id` FROM `data` GROUP BY `id` ORDER BY `id` LIMIT 0, 30 ";