SQL 子查询将只检查一列，当要求检查同一查询时失败

Question

When I run the following code in SQL Server 2014 Express, it works fine to get all children of this father for a family relation table.

select Name 
from Persons 
where ID in (select personID 
             from FAMILY 
             where fatherID in (select fatherID.ID 
                                from Persons fatherID 
                                where fatherID.Name = 'Louis Vingo'))  

But when I try and check both the mother and father with this code I get an error.

select Name 
from Persons 
where ID in (select personID 
             from FAMILY 
             where (fatherID, motherID) in (select fatherID.ID, motherID.ID  
                                            from Persons fatherID, Persons motherID 
                                            where fatherID.Name = 'Louis Vingo' 
                                              and motherID.Name = 'Dianne Vingo'))

Error:

An expression of non-boolean type specified in a context where a condition is expected, near ','.
Incorrect syntax near ')'.

Any suggestions I have read that it may be due to the code only taking one parameter in this case?

Answer 1

Using your syntax, you need two in conditions:

where fatherID in (select p.ID from Persons p where p.Name = 'Louis Vingo') and
      motherID in (select p.ID from Persons p where p.Name = 'Dianne Vingo')

It is rather tricky to combine this into a single subquery -- and not worth the effort.