字段列表中的“名称”列不明确

Question

 <?php 
$cid=$_REQUEST['cn'];
 $sid=$_REQUEST['sn'];
 $query="select name,NAME from products a,category b where a.category_id=$cid and a.store_id=$cid and a.category_id=b.ID ";

 $result=  mysqli_query($link, $query)or die(mysqli_error($link));
?> 

i write simple program,it showing the following error. if i mention name as products.name then it shows unknown column products.name.

the main error is Column 'name' in field list is ambiguous

Answer 1

You need to prepend the selected columns since you are doing a query over multiple tables containing columns with the same name eg.:

select a.name as prod_name,b.NAME as cat_name 
from products a,category b 
  where a.category_id=$cid 
  and a.store_id=$cid 
  and a.category_id=b.ID