I tried to count groups without joining other tables and the command was like this:
SELECT count(*) FROM group
WHERE deleted = 0
the result is10
.
but, I tried to make an SQL command to count the group with join the other tables and the other tables aremember, user
andprofile
.
The SQL command that I tried:
SELECT count(group.gid) FROM group
JOIN member ON group.gid = member.gid
JOIN user ON member.uid = user.uid
JOIN profile ON users.uid = profile.uid
WHERE group.deleted = 0
the result is25
and when I tried to giveLEFT JOIN
, the result is0
.
Can I get the same result of SQL commands when I used the joining of the tables? or there are other ways to try it?
Thanks for the advice.
Edited: I'm sorry my explain is not clearly before. here my reason why I want to join the tables.
I want to join the SQL because I want to getid_dep
in theprofile
's table. So, I will make SQL commands to get the total of the groups by id_dep where group.deleted = 0 i.e. 0 means the group is not deleted by users and 1 is already deleted by users.
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