从哪个表中获取字段

Question

有疑问：

SELECT *
FROM table1 t1
LEFT JOIN table2 t2
    ON t2.id_table1 = t1.id
LIMIT 1

得到了结果：

id => 1
field1 => val1
filed2 => val2
field3 => val3

是否可以知道哪个字段属于哪个表？

Answer 1

这就是您所需要的：mysql_fetch_field()

Answer 2

$export =mysql_query("SELECT fieldnames FROM table1 t1 LEFT JOIN table2 t2 ON 
t2.id_table1 = t1.id LIMIT 1");

$no_rows= mysql_num_rows ( $export );
for ( $i = 0; $i < $fields-1; $i++ ) 
{
    $fields=mysql_field_name( $export , $i ) . ",";
}

echo $fields;

请试试这个......