Question

I need some help. I’m trying to display a field called SubmissionStatus in a query. However I need to select it from multiple tables. For example…

I have:

Table0

Table1.SubmissionStatus
Table2.SubmissionStatus
Table3.SubmissionStatus
(All three of these tables have a foreign key to relate them to Table0)

I can do:
SELECT Table1.SubmissionStatus, Table2.SubmissionStatus, Table3.SubmissionStatus
FROM Table0

But that won’t give me anything

I need something like:
SELECT SubmissionStatus FROM Table0 (As one column)

Help please?

Answer 1

I would suggest using a union, like so:

SELECT T1.SubmissionStatus 
FROM Table1 T1
JOIN Table0 T0 ON T1.primaryKey = T0.foreignKey
UNION
SELECT T2.SubmissionStatus 
FROM Table1 T2
JOIN Table0 T0 ON T2.primaryKey = T0.foreignKey
UNION
SELECT T3.SubmissionStatus 
FROM Table1 T3
JOIN Table0 T0 ON T3.primaryKey = T0.foreignKey

That will put everything in one column (think of a union kind of like the JOIN keyword, but for joining rows instead of columns).