元表

Question

我有一个如下所示的表格结构

我正在运行搜索查询，搜索提供的属性ID meta_value对meta_name。

我使用了union，self join，union所有方法但没有工作，请建议我查询以获取数据

mysql查询

1）

SELECT property_id from
real_new_properties
where (meta_name = 'price' and meta_value = '1000')
  and (meta_name = 'propertyvalue' and meta_value = '10000')

2）

SELECT property_id
from real_new_properties
where meta_name = 'price'
  and meta_value = '1000'
UNION
SELECT property_id
from real_new_properties
where meta_name = 'propertyvalue'
  and meta_value = '10000' 

3）

SELECT property_id
from real_new_properties
where meta_name = 'price'
  and meta_value = '1000'
UNION ALL
SELECT property_id
from real_new_properties
where meta_name = 'propertyvalue'
  and meta_value = '10000' 

Answer 1

要获得分别有meta_name price和propertyvalue以及meta_value 1000和10000的所有内容，您需要这样做。< / p>

SELECT * FROM `table` WHERE (meta_name = 'price' and meta_value = '1000') OR (meta_name = 'propertyvalue' and meta_value = '10000')

这将从table meta_name = 'price' and meta_value = '1000'和meta_name = 'propertyvalue' and meta_value = '10000'

中选择