如何提取数据对应的查询

Question

如何提取相应查询的数据： "multiple_option_id=10"和"multiple_option_id=1074"并返回与此查询对应的"product_id"？

link to img

Answer 1

这有两种可能性

• 获取product_id multiple_option_id 10或1024

• 获取product_id multiple_option_id，其中包含10或1024

对于第一种情况，它相当简单

select product_id from table_name 
where multiple_option_id in (10,1024) 

对于第二种情况，它将是

select product_id from table_name 
where multiple_option_id in (10,1024) 
group by product_id having count(*) = 2 

Answer 2

 select product_id from table 
 where multiple_option_id in (10,1024) 

Answer 3

var query = data.GroupBy(item => item.Distance)
    .SelectMany(group => group.OrderBy(Guid.NewGuid()));