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Editorial Team
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Asked: 2026-05-25T11:59:39+00:00

I’ve got 3 tables. The SQL below should explain a little of the data

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I’ve got 3 tables. The SQL below should explain a little of the data in there that I need:

SELECT m.FirstName, m.LastName, m.DOB, m.Gender, a.Address1, a.Address2, a.City, 
a.State, a.Country, a.PostCode from Members m 
LEFT JOIN Addresses a ON m.Id = a.MemberId 
INNER JOIN AddressType at ON at.Id = a.AddressTypeId 
WHERE m.Email = 'member2@test.com' AND at.Type = 'Account'

If data is present in the Members for the user but not in the addresses I still need the FirstName, LastName etc to be returned but the Address etc as NULL. Currently it’s all coming back as null. I thought I could do this with an outer join but I’ve tried and can’t get it to pull what I need back. Am I thinking completely wrong or just doing it wrong? And yes, if I’m doing it wrong I’d love it if you could tell me what and how. 🙂

EDIT:

I made the modification suggested but:

SELECT m.FirstName, m.LastName, m.DOB, m.Gender, a.Address1, a.Address2, a.City, 
a.State, a.Country, a.PostCode from Members m 
LEFT JOIN Addresses a ON m.Id = a.MemberId 
LEFT JOIN AddressType at ON at.Id = a.AddressTypeId 
WHERE m.Email = 'member2@test.com' AND at.Type = 'Account'

this doesn’t work. When I remove the AddressType:

SELECT m.FirstName, m.LastName, m.DOB, m.Gender, a.Address1, a.Address2, a.City, 
a.State, a.Country, a.PostCode from Members m 
LEFT JOIN Addresses a ON m.Id = a.MemberId 
WHERE m.Email = 'member2@test.com'

it pulls back the data so I know the first join is working. Any ideas?

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1 Answer

  1. Editorial Team

    You need to use LEFT JOIN on both joins. Right now the first join acts as you want it to, but the following INNER JOIN tries to match the at.Id = a.AddressTypeId condition on a NULL and it can’t, so the row isn’t returned.

    An INNER JOIN will return a non-empty, non-NULL result only if it can satisfy its ON condition.

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