Question

Let’s say I have these table:
What should be my sql request to get the expected result?

table user_group:

group_id          |   user_id       |   is_active
1                          2               1
1                          3               1
2                          2               1
4                          2               1

table group :

id |     name
1       group1
2       group2
3       group3
4       group4
5       group5
6       group5

expected result

group_id       |      name      | user_id    |   is_active
 1                   group1         2               1
 2                   group2         2               1
 3                   group3         2               0
 4                   group4         2               1
 5                   group5         2               0
 6                   group6         2               0

I tried

SELECT g.id, g.name, ug.user_id, ug.is_active
FROM group g
LEFT OUTER JOIN user_group uc ON ug.group_id = g.id
WHERE ug.user_id =2

but I only have the groups where user 2 is IN (so group1, group2 and group4)

Answer 1

Try this:

SELECT  id ,
        name ,
        COALESCE(user_ID, 2) user_id ,
        COALESCE(is_active, 0) is_active
FROM    tableGroup
        LEFT JOIN user_group ON id = group_id
                                AND user_Id = 2

You can fiddle with this here