Question

foreach($dbh->query  ('SELECT a.tovar = '$users_input',
( select sum(b.kusy) from jednotypredaj as b where b.tovar=a.tovar and b.co="prijem" ) as prijem_ks,
( select sum(c.kusy) from jednotypredaj as c where c.tovar=a.tovar and c.co="predaj" ) as predaj_ks
FROM jednotypredaj  as a GROUP BY a.tovar ORDER by predaj_ks DESC') as $row)

我找不到'SELECT a.tovar = '$users_input'的原因，对我的搜索引擎不起作用。

Answer 1

谢谢你但不知道如何真正使用它我的整个代码看起来像这样

$hostname="localhost";  
$username="kintrogorgo";  
$password="password";  

$db = "jednoty";  
$dbh = new PDO("mysql:host=$hostname;dbname=$db", $username, $password);  
foreach($dbh->query  ('SELECT a.tovar ,
( select sum(b.kusy) from jednotypredaj as b where b.tovar=a.tovar and b.co="prijem" ) as prijem_ks,
( select sum(c.kusy) from jednotypredaj as c where c.tovar=a.tovar and c.co="predaj" ) as predaj_ks
FROM jednotypredaj  as a GROUP BY a.tovar ORDER by predaj_ks DESC') as $row)
 {  

echo "<tr>"; 
echo "<td>" . $row['tovar'] . "</td>";  
echo "<td>" . $row['prijem_ks']. "</td>";  //Tu by mali bit predane kusy
echo "<td>" . $row['predaj_ks'] . "</td>";  

echo "<td>" . ($row['predaj_ks']-$row['prijem_ks'] . "</td>");
echo '<td><a href="3edit.php?tovar=' . $row['tovar'] . '">Zobraziť</a></td>';
echo "</tr>";   
}  


?>  `

我想在这里添加搜索引擎以便能够在任何行中进行搜索。谢谢你

我无法弄清楚如何将搜索引擎实现为sql语法

1 个答案: