MySQL Reference Manual for version 4.0.18.

[ < ] [ > ]   [ << ] [ Up ] [ >> ]         [Top] [Contents] [Index] [ ? ]

3.6.5 Using User Variables

You can use MySQL user variables to remember results without having to store them in temporary variables in the client. See section 10.3 User Variables.

For example, to find the articles with the highest and lowest price you can do this:

 
mysql> SELECT @min_price:=MIN(price),@max_price:=MAX(price) FROM shop;
mysql> SELECT * FROM shop WHERE price=@min_price OR price=@max_price;
+---------+--------+-------+
| article | dealer | price |
+---------+--------+-------+
|    0003 | D      |  1.25 |
|    0004 | D      | 19.95 |
+---------+--------+-------+



This document was generated by rdg (Feb 25 2004) using texi2html