如何结合两个MySQL查询在一个表格行中显示结果

Question

我有两个单独的查询显示两个表中的结果。我想在一张表中显示结果。如何让它显示这些数据？

因此，在第一线，我想有

• GE 32,768千赫SMD
• 12,87112
• Rezonator kwarcowy KX-327S 32,768千赫12.5pF的，20/-0,042/50K
• Rezonatory filtry我źródłaczęstotliwości> Rezonatory kwarcowe（新线加入这里的而不是 “ - ”）
• 1.190000

这是现在的样子。我想补充另一列 “由... kategorii”

<?php 
    $result = mysql_query('SELECT 
     prodlang.id_product AS "idprod", 
     prodlang.name AS "nazwa", 
     prod.price AS "cena", 
     prod.minimal_quantity AS "moq", 
     prod.ean13 AS "nazwag", 
     prod.reference AS "kod", 
     prod.quantity AS "ilosc", 
     prod.active AS "aktywny" 
     FROM pstest_product_lang prodlang 
     INNER JOIN pstest_product prod 
     ON prodlang.id_product=prod.id_product 
     limit 10'); 

     while ($row = mysql_fetch_array($result)) echo('<tr><td>'.$row['idprod'].'</td><td>'.$row['kod'].'</td><td>'.$row['nazwag'].'</td><td>'.$row['nazwa'].'</td><td> - </td><td>'.$row['ilosc'].'</td><td>'.$row['aktywny'].'</td><td>'.$row['moq'].'</td><td>'.$row['cena'].'</td></tr>'); 

?> 
<?php 
    $results = mysql_query('SELECT 
     prodcat.id_product AS "idprod", 
     catlang.name AS "nazwacat" 
     FROM pstest_category_product prodcat 
     INNER JOIN pstest_category_lang catlang 
     ON prodcat.id_category=catlang.id_category 
     ORDER BY idprod 
     limit 10'); 

     while ($row = mysql_fetch_array($results)) echo('<tr><td>'.$row['idprod'].'</td><td>'.$row['nazwacat'].'</td></tr>');            
?> 

Answer 1

您可以通过使用GROUP_CONCAT与组。有关信息，请参见group by文档。我改变你的查询，并希望它的工作：

SELECT 
     prodlang.id_product AS "idprod", 
     prodlang.name AS "nazwa", 
     prod.price AS "cena", 
     prod.minimal_quantity AS "moq", 
     prod.ean13 AS "nazwag", 
     t2.nazwacat as "nazwacat", 
     prod.reference AS "kod", 
     prod.quantity AS "ilosc", 
     prod.active AS "aktywny" 
     FROM pstest_product_lang prodlang 
     INNER JOIN pstest_product prod 
     ON prodlang.id_product=prod.id_product 
     join (
     SELECT 
     prodcat.id_product AS "idprod", 
     Group_concat(catlang.name) AS "nazwacat" 
     FROM pstest_category_product prodcat 
     INNER JOIN pstest_category_lang catlang 
     ON prodcat.id_category=catlang.id_category 
group by prodcat.id_product 
) t2 on t2.idprod=prodlang.id_product 
     limit 10