Question

我有4个不同的表，名为

ps_product
ps_product_lang
ps_category_lang
ps_manufacturer

ps_product的表格就像这样

id_product  id_manufacture  id_category_default
1           1               5
2           1               7
3           1               9
4           1               10
5           1               11
6           1               11

ps_product_lang就像这样

id_product   name 
1           Faded Short Sleeve T-shirts
2           Blouse
3           Printed Dress
4           Printed Dress
5           Printed Summer Dress
6           Printed Summer Dress
7           Printed Chiffon Dress

ps_category_lang就像这样

id_category  name
1            paints
2            Home
3            Women
4            Tops
5            T-shirts
6            Tops
7            Blouses

ps_manufacturer表就像这样

id_manufacturer  name
1                Fashion Manufacturer

现在我想要的是当我选择名称时，它会显示这些名称的数据。就像我将搜索'paint%'之类的东西，然后它应显示产品名称，产品类别和制造商名称的匹配名称那么有人可以告诉我如何加入这些表来获取值吗？任何帮助和建议都将是非常令人难以置信的。感谢

Answer 1

在所有四个表上尝试内部联接，然后在所有名称字段之间执行“和”，如果您希望字段在这三个表中的任何一个中开始说漆，那么：

SELECT *
FROM ps_product pp INNER JOIN ps_product_lang ppl  ON pp.id_product          = ppl.id_product
                   INNER JOIN ps_category_lang pcl ON pp.id_category_default = pcl.id_category
                   INNER JOIN ps_manufacturer pm   ON pp.id_manufacturer     = pm.id_manufacturer
WHERE ppl.name like 'paint%'
AND   pcl.name like 'paint%'
AND   pm.name  like 'paint%'

注意：如果要搜索涂料以存在于这三个表中的任何一个中，则在条件之间使用“OR”而不是“AND”。

Answer 2

试试这个：

SELECT pl.name, cl.name, m.name
FROM ps_product p 
LEFT OUTER JOIN ps_product_lang pl ON p.id_product = pl.id_product AND pl.name LIKE 'paint%'
LEFT OUTER JOIN ps_category_lang cl ON p.id_category_default = cl.id_category AND cl.name LIKE 'paint%'
LEFT OUTER JOIN ps_manufacturer m ON p.id_manufacture = m.id_manufacture AND m.name LIKE 'paint%'
WHERE pl.id_product IS NOT NULL OR 
      cl.id_category IS NOT NULL OR 
      m.id_manufacture IS NOT NULL;

或

SELECT pl.name, cl.name, m.name FROM ps_product p INNER JOIN ps_product_lang pl ON p.id_product = pl.id_product INNER JOIN ps_category_lang cl ON p.id_category_default = cl.id_category INNER JOIN ps_manufacturer m ON p.id_manufacture = m.id_manufacture WHERE pl.name LIKE 'paint%' OR cl.name LIKE 'paint%' OR m.name LIKE 'paint%';

Answer 3

 SELECT x.id,y.name,z.name,a.name 
 FROM ps_product x 
 FULL OUTER JOIN ps_product_lang y 
 ON x.id_product = y.id_product 
 FULL OUTER JOIN ps_category_lang z
 ON x.id_category_default = z.id_category 
 FULL OUTER JOIN ps_manufacturer a 
 ON x.id_manufacture = a.id_manufacture 
 WHERE a.name LIKE 'paint%'
 OR y.name LIKE 'paint%'
 OR z.name LIKE 'paint%'

此处需要

全外联接，因为您希望匹配所有名称，以便获取所有数据并与模式匹配＆＃39; paint％＆＃39;并显示匹配的行。尝试一次

MySql从不同的表中获取匹配的名称

3 个答案: