怎么同时查询多个数据表
怎样同时查询多个数据表
有3个表（jtrb1,jtrb2,jtrb3），每个表都有几十万行记录，且每个表字段名称都一样（id,name,price,intime,outtime）
怎样同时查询3个表里的内容？
比如我要在3个表里同时查字段name为“上衣”价格price小于“300”的记录。
求贴个PHP代码，单个表查询会做，多个表的就搞不动了。
另外：多表查询能不能用
while($row = mysql_fetch_array($result))
来输出内容？
最主要的还是贴个代码啊。谢谢啦！！
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