Mysql数据库查出的数据默认排序方式

当你的表示myisam时：

SELECT * FROM tbl -- this will do a "table scan". If the table has never had any DELETEs/REPLACEs/UPDATEs, the records will happen to be in the insertion order, hence what you observed.

mySQL里desc和asc的意思

desc是descend 降序意思

asc 是ascend 升序意思

sql = "select 表内容名from 数据库表名 Putout=true order by 读取的排序表名 asc"

例如

sql = "select * from user where Putout=true order by timedesc"//按最新时间来排序

sql = "select * from user where Putout=true order by timeasc" //按早时间来排序

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