Table 'teams_members'
Team_id
User_id
Table 'users_playeraccounts'
User_id
Rank_solo
Summoner_name
Table 'users'
Id
Username
My target : Fetching the current team members with their summonername and rank_solo where rank_solo is the highest out of all their playeraccounts
So multiple entries in 'users_playeraccounts' can be belong to a single user.
Select user_id,summoner_name,rank_solo
from teams_members t
join users_playeraccounts p on t.user_id = p.user_id
join users u on u.id = p.user_id
where team_id = 103
With something added I have no clue of
try this
select a.username, u.rank_solo, u.summoner_name
from teams_members as t
inner join users_playeraccounts as u on t.user_id = u.user_id
inner join users as a on a.id in (select u.user_id from users_playeraccounts
group by u.summoner_name,
having max(u.rank_solo) );
Related
I have two tables one is users and second is user_education.One users can have more than one education listing so i want to get the latest user education listing
users
===============
1-id
2-email
member_experience
==============
1-id
2-user_id
3-designation
user id 1 has 4 enteries in user_education so i want to get the last record enter designation of the user
original full query is like this
SELECT u.id,u.name,u.gender,u.email,file_managed.file_name,file_managed.file_path
from users as u
INNER JOIN member_experience on (SELECT uid FROM member_experience where member_experience.uid=u.id ORDER BY id DESC LIMIT 1)=u.id
LEFT JOIN file_managed on file_managed.id= u.fid
where u.user_type ='individual' AND u.gender='male'
"INNER JOIN member_experience on (SELECT uid FROM member_experience where member_experience.uid=u.id ORDER BY id DESC LIMIT 1)=u.id "
this portion has problem as users has many record in member_experience table but i want to get only one which is latest.
thanks
Devolve the acquisition of the last record to the where statement.
drop table if exists member_experience;
create table member_experience(id int auto_increment primary key, userid int);
insert into member_experience (userid) values
(1),(2),(1);
select * from member_experience
SELECT u.id,m.id
from users as u
join member_experience m on m.userid = u.id
where m.id = (SELECT max(m.id) FROM member_experience m where m.userid = u.id)
order by u.id
Or if you want to include those with no experience
SELECT u.id,m.id
from users as u
left join member_experience m on m.userid = u.id
where (m.id = (SELECT max(m.id) FROM member_experience m where m.userid = u.id)
or m.id is null)
and u.id < 4
order by u.id
I've this table structure:
-request
request_id
user_id
-user
user_id
company_id
-company
company_id
I want to select all those records from requests table where user_id=? and no such records where the company id of to users is same.
This is usually achieved using LEFT JOIN:
SELECT r.*
FROM request r
JOIN user u ON r.user_id = u.user_id
LEFT JOIN u1 ON u1.user_id != u.user_id AND u1.company_id = u.company_id
LEFT JOIN request r1 ON r1.user_id = u1.user_id
WHERE r1.user_id IS NULL
By "where" we say that we don't want "users with same company, who has at least 1 request"
I have a query that involves 3 tables. The table "project" contains the records I want to retrieve.
3 tables:
project
participants:
id
project_id (refers to id of table 1)
usertable_id (refers to is of table 3)
usertable:
id
lastname
user_type (either "active" or "inactive")
I want to retrieve all the projects (table 1) where the participants (table 2) are NOT of user_type = 'inactive' (table 3)
What is the correct query to join these three tables so that only these projects are retrieved?
select * from projects p
left join participants ps on ps.project_id = p.id
left join usertable u on ps.usertable_id = u.id
where u.user_type <> 'inactive'
Do a simple join query with your where filter
SELECT p.*
FROM project p
LEFT JOIN participants pr ON(p.id = pr.project_id)
LEFT JOIN usertable u ON(u.id=pr.usertable_id )
WHERE u.user_type <> 'inactive'
Edit from comments
SELECT p.*
FROM project p
WHERE NOT EXISTS
(
SELECT 1
FROM participants pr
JOIN usertable u ON(u.id=pr.usertable_id )
WHERE u.user_type = 'inactive'
AND pr.project_id= p.id
)
I have 3 MySQL tables namely chat_comments, chat_friends and user_details and I want to display a friend list.
My tables:
chat_comments(comment_id,comment,user_id,user_id2,date_added)
chat_friends(user_id,user_id2,approved)
user_details(user_id, mainimage_id, fullname)
To do this, I need a query that will return the needed fields (u.mainimage_id, u.fullname, b.comment, b.user_id) so I can loop through the list to display a table.
SQL so far (help from #Andriy M):
SELECT
cc.comment,
cc.date_added,
u.fullname,
u.mainimage_id
FROM
user_details u
LEFT JOIN
chat_comments cc
INNER JOIN (
SELECT
user_id,
MAX(comment_id) AS maxcomment
FROM chat_comments WHERE user_id=2020 OR user_id2=2020
GROUP BY user_id
) a ON a.user_id = cc.user_id
AND a.maxcomment = cc.comment_id
ON a.user_id = u.user_id
WHERE u.user_id IN (
SELECT user_id2
FROM chat_friends
WHERE user_id = 2020
AND approved = 1
)
The above query returns the last comment made by the logged-in user's friends in conversation not the last comment between the logged-in user and his/her friend regardless of who made it.
I would like it to return the last comment between the logged-in user and their friend individually regardless of who made it. In the chat_messages table, user_id is the sender and user_id2 is the receiver. Hope it makes sense?
Like #imm said in a comment, you need to use an outer join. In case of a left join, the user_details table should become the left side of the join, the right side being the result of your inner join of chat_comments with your a derived table. You'll also need to remove the user_id IN (…) condition from inside the a subselect and re-apply it to the user_details table. Here:
SELECT
cc.comment,
cc.date_added,
u.fullname,
u.mainimage_id
FROM
user_details u
LEFT JOIN
chat_comments cc
INNER JOIN (
SELECT
user_id,
MAX(comment_id) AS maxcomment
FROM chat_comments
GROUP BY user_id
) a ON a.user_id = cc.user_id
AND a.maxcomment = cc.comment_id
ON a.user_id = u.user_id
WHERE u.user_id IN (
SELECT user_id2
FROM chat_friends
WHERE user_id = 2020
AND approved = 1
)
;
Alternatively, you could use a right join. In this case you would just need to move the user_id IN (…) condition, similarly to the LEFT JOIN solution above, and replace the second INNER JOIN with RIGHT JOIN:
SELECT
cc.comment, cc.date_added, u.fullname, u.mainimage_id
FROM
(
SELECT user_id, MAX(comment_id) AS maxcomment
FROM chat_comments
GROUP BY user_id
) a
INNER JOIN
chat_comments cc ON
a.user_id = cc.user_id AND
a.maxcomment = cc.comment_id
RIGHT JOIN
user_details u ON
a.user_id = u.user_id
WHERE u.user_id IN (select user_id2 from chat_friends where user_id=2020 AND approved=1)
I have three different tables in my MySQL database.
table users: (id, score, name)
table teams: (id, title)
table team_Members: (team_id, user_id)
What I would like to do is to have 1 query that finds every team ID a given user ID is member of, along with the following information:
total number of members in that team
the name of the team
users rank within the team (based on score)
EDIT:
Desired output should look like this;
TITLE (of the group) NUM_MEMBERS RANK
------------------------------------------------
Foo bar team 5 2
Another great group 34 17
.
.
.
The query should be based on the users ID.
Help is greatly appreciated
I think this query should get what you ask for
select t.id, t.title, count(m.user_id) members, (
select count(1)
from users u3
inner join team_Members m3 on u3.id = m3.user_id
and m3.team_id = t.id and u3.score > (
select score from users where name = 'Johan'
)
) + 1 score
from teams t
inner join team_Members m on t.id = m.team_id
where t.id in (
select team_id
from team_Members m2
inner join users u2 on m2.user_id = u2.id
where u2.name = 'Johan'
)
group by t.id, t.title
To collect you just need use JOIN
SELECT
u.*, t.*, tm.*
FROM
users u
JOIN
team_Members tm ON u.id = tm.user_id
JOIN
teams t ON t.id = tm.team_id;
To get total of number of that team use COUNT with some group key
Some like that
SELECT
COUNT(t.id), u.*, t.*, tm.*
FROM
users u
JOIN
team_Members tm ON u.id = tm.user_id
JOIN
teams t ON t.id = tm.team_id GROUP BY t.id;
And to rank just:
SELECT
COUNT(t.id) as number_of_members, u.*, t.*, tm.*
FROM
users u
JOIN
team_Members tm ON u.id = tm.user_id
JOIN
teams t ON t.id = tm.team_id
GROUP BY t.id
ORDER BY u.score;