小编lou*_*356的帖子

SQL-小提琴

http://sqlfiddle.com/#!9/c82c87b/1

表定义

首先，这是我的表：

 CREATE TABLE `stackoverflow` (
`id` VARBINARY( 36 ) NOT NULL COMMENT 'GUID generated by PHP',
`time` TIME NOT NULL COMMENT 'Current time(stamp)',
`type` VARCHAR( 10 ) NOT NULL COMMENT 'start/stop',
`reference` VARBINARY( 36 ) NOT NULL COMMENT 'multiple starts/stops to one reference',
PRIMARY KEY ( `id` )
) ENGINE = MYISAM 

数据

这是一些示例数据：

INSERT INTO `stackoverflow` (
`id` ,
`time` ,
`type` ,
`reference`
)
VALUES 
('03bd8e91-b9aa-4d18-be47-9e9cce903cfd', '11:00:00', 'start', '76afe924-08aa-431b-904a-66290c50da6a'), 
('ef10860a-7666-4ca0-95b6-79ef2d5b3f75', '11:01:00', 'start', 'fd064ef5-462f-489c-ae14-3cb766eb80c4'), 
('9bc72e24-a0d4-43a3-86ab-973c331e2958', '11:02:00', …