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如何利用Mysql PHP的功能,从Mysql DB中挑选头2或3行?
原标题:How to fetch the first 2 or 3 rows from Mysql DB using Mysql PHP function?
  • 时间:2010-05-12 12:20:27
  •  标签:
  • php
  • mysql

如何利用Mysql PHP的功能,从Mysql DB中挑选头两行? 是否有任何职能能够让我从我们开过来的挑选点头2或3分流?

最佳回答

使用<条码>LIMIT。 http://dev.mysql.com/doc/refman/5.1/en/select.html

SELECT * FROM tbl LIMIT 3; 

或检索6-15行:

SELECT * FROM tbl LIMIT 5,10;

如果您不使用<代码>,请询问(即无限制)。 根据条款,将按数据库所示顺序定购结果。

问题回答

http://php.about.com/od/mysqlcommands/g/Limit_sql.htm

select * from your_table limit 3

这将选择第1三行。

而且:

select * from your_table limit 5, 3

以后将选择从5行开始的行文,并退回3行。

你有两种选择:

  1. Fire a query to select all the rows and then select 2 or 3 rows as needed using PHP.
  2. Fire a query to select only the necessary number of rows using LIMIT clause.

第2选择更为可取。





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