Question

I am facing a bit of problem in retrieving the records from my datatable. Can anybody please offer me any suggestions?

Id LearnerId ConnectionId  IsApproved   
3   1            38       1
5   39           1        1 
7   1            31       1 
13  1            30       1 
31  1            40       1 
34  41           1        1 
35  31           1        1 
39  1            42       1 

This is what my table looks like. I want to use the select query on this table to select the records like the following:

AllId
38
39
31
30
40
41
31
42

How do I write the query in order to find the above record list? I want to collect all ID’s other than 1.

Answer 1

You can use a UNION ALL between two queries. The first will return the connectionid values and the second returns the learnerid values:

select ConnectionId as AllId
from LearnerConnections
where LearnerId = 1
union all
select LearnerId as AllId
from LearnerConnections
where ConnectionId = 1

See SQL Fiddle with Demo