Question

我正在尝试为具有与请求类似的标题或子类别名称的文章获取结果。

Table 1
Subcategory_ID Subcategory_Name

Table 2
Article_ID   Title  Subcategory_ID

现在我需要从表2中获取文章，其中title或subcategory_names与我们正在寻找的内容相匹配。

这是我所拥有的，但我无法想出其余的

 SELECT table1.*, table2.* FROM table1,table2 WHERE table2.title = '%keyword%'

其余的我搞砸了......

解决方案是什么？

Answer 1

试试这个：

SELECT t2.Title, t1.Subcategory_Name
FROM Table2 t2 JOIN Table1 t1
ON t2.Subcategory_ID = t1.Subcategory_ID
WHERE t2.title LIKE '%keyword%' OR t1.Subcategory_Name LIKE '%keyword%'

Answer 2

SELECT table1.*, table2.* FROM table1, table2 
  WHERE table1.Subcategory_ID=table2.Subcategory_ID 
  AND (table2.title LIKE '%keyword%' OR table1.Subcategory_Name LIKE '%keyword%')

使用MySQL INNER JOIN，如果在WHERE子句中使用“table1.Subcategory_ID = table2.Subcategory_ID”，则它是隐式的。

Answer 3

SELECT table1.*, table2.* FROM table1 INNER JOIN table2 USING (Subcategory_id) 
  WHERE table2.title LIKE '%keyword%'

您可以将USING (Subcategory_id)替换为ON (table1.subcategory_id = table2.subcategory_id)。

有关详细说明，请参阅 MySQL Tutorial - Join 。

Answer 4

可能是

select t1.*,t2.* 
  from `table2` t2 join `table1` t1 
  on t1.Subcategory_ID = t2.Subcategory_ID 
  where t2.title LIKE '%keyword%' or t1.Subcategory_Name LIKE '%keyword%'

帮助MySQL查询结合2个表与LIKE AND OR语句？

4 个答案: