Is it possible in only one MySQL query to get the desired result (below) returned into one row ?
Where id=1 in Table 1
Table 1
|------|----------|----------|
| id | refIdOne | refIdTwo |
|------|----------|-----------
| 1 | 1 | 2 |
|------|----------|-----------
Columns "refIdOne" & "refIdTwo" refer Table 2 "id" column
Table 2
|------|------------------|
| id | text |
|------|------------------|
| 1 | cheese |
| 2 | made with milk |
|------|------------------|
Desired result returned in ONE ROW with custom AS columns named "subject" and "description" :
|----------|-----------------|
| subject | description |
|----------|-----------------|
| cheese | made with milk |
? Many thanks for help
* EDIT : Answer is *
select t21.text as subject, t22.text as description
from Table1 as t1
join Table2 as t21 on t1.refidone = t21.id
join Table2 as t22 on t1.refidtwo = t22.id
where t1.id = 1
Table2 has to joined twice to Table1.
select t21.text as subject, t22.text as description
from table1 t1
join table2 t21 on t1.refidone = t21.id
join table2 t22 on t1.refidtwo = t22.id
You need to perform Self join
. Join Table2
. ID
twice with Table1
. refIdOne
and Table1
. refIdTwo
select t2.text as subject, t3.text as description
from Table1 t1
Left join Table2 t2 on t1.refIdOne = t2.id
Left join Table2 t3 on t1.refIdTwo = t2.id
without joins
SELECT
(SELECT text FROM Table2 WHERE id = (SELECT refIdOne FROM Table1 WHERE id = 1) ) AS name,
(SELECT text FROM Table2 WHERE id = (SELECT refIdTwo FROM Table1 WHERE id = 1) ) AS description
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