SQL Question
MS Access INNER/LEFT JOIN on NULL values
I have two tables.
The first one is: Project Table
ID | SN | pTypeID
----|----------|-------
1 | project1 | 1
2 | project2 | 3
3 | project3 | NULL
4 | project4 | NULL
and the second one is: pType Table
ID | Name
----|---------
1 | pType1
2 | pType2
3 | ptype3
I want to make a query that will return the following
ID | SN | Name
----|----------|--------
1 | project1 | pType1
2 | project2 | pType3
3 | project3 | NULL
4 | project4 | NULL
Here is what I tried:
SELECT Project.ID, Project.SN, pType.Name
FROM Project
INNER JOIN Type ON Project.pTypeID = pType.ID
But I get an error saying "No Value given for one or more parameters".
After some research, I suspect that the error is produced by the NULL values in the Project table. I also tried with Left Joins and got the same error.
I found this question but the solution doesn't work in Access apparently.
I am doing this in Excel with VBA. I am connecting to an Access ".accdb" database using ADODB connections.
Here is my question: is there any efficient way to achieve what I am trying to do?
Thanks
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Answer Source
I believe you want to left join on pType
select p.id, p.sn, t.name
from Project as p
left join pType as t on p.pTypeID = t.id;
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