mysql - 如何组合两个 MySQL 查询以在一个表行中显示结果

Question

我有两个单独的查询，在两个表中显示结果。我想在一张表中显示结果。如何让它显示这些数据？

所以在第一行我想要

• 2
• GE 32,768 kHz SMD
• 12,87112
• 谐振器 kwarcowy KX-327S 32,768 kHz 12.5pF，20/-0,042/50K
• Rezonatory filtry i źródła częstotliwości > Rezonatory kwarcowe(此处添加新行而不是“-”)
• 12195
• 1
• 1
• 1.190000

这就是现在的样子。我想添加另一列“Nazwa 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

您可以将group_concat与group by结合使用。有关更多信息，请参阅 group by文档。我更改了您的查询并希望它有效:

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