mysql query join statement - mysql

I have a problem in a query.
i need to make a page where user can see all reservations he made with movie name, cinema name, seats code that he reserved
i reached this level
SELECT member.member_username, show_datetime, movie_name
FROM `member`
JOIN `reservation` ON `reservation`.`member_id` = `member`.`member_id`
JOIN `show` ON `show`.`show_id`= `reservation`.`show_id`
JOIN `movie` ON `movie`.`movie_id` = `show`.`movie_id`
WHERE `reservation`.`member_id`=1
i need to make a connection and get also the cinema_name from cinema table and seats_code from seat table and theater name
in fact, i need a query to give me all almost all data in my whole database
here is the schema for the DB
http://imageshack.us/photo/my-images/824/58054944.jpg/

JOIN these two tables too:
SELECT
m.member_username,
sh.show_datetime,
v.movie_name,
c.cinema_name,
t.theater_name
FROM member AS m
INNER JOIN reservation AS r ON r.member_id = m.member_id
INNEr JOIN show AS sh ON sh.show_id = r.show_id
INNER JOIN movie AS v ON v.movie_id = s.movie_id
INNER JOIN theater AS t ON t.theater_id = sh.theater_id
INNER JOIN cinema AS c ON c.theater_id = sh.theater_id
WHERE r.member_id = 1

Keep joining your tables
SELECT member.member_username, show_datetime, movie_name, c.cinema_name, t.theater_name
FROM `member`
JOIN `reservation` ON `reservation`.`member_id` = `member`.`member_id`
JOIN `show` ON `show`.`show_id`= `reservation`.`show_id`
JOIN `movie` ON `movie`.`movie_id` = `show`.`movie_id`
JOIN `theater` ON `show`.`theater_id` = `theater`.`theater_id`
JOIN `cinema` ON `theater`.`cinema_id` = `cinema`.`cinema_id`
JOIN `seat` ON `show`.`theater_id` = `seat`.`theater_id`
WHERE `reservation`.`member_id`=1

Related

MYSQL Inner Join with IF Statement

I'm trying to join several tables in my database.
I need to get account information from the 'accounts' table with the latest meter history on it.
And if an account has no meter history, I want it to show 'meter' related fields as NULL.
Here's my query so far:
SELECT
accounts.id,
accounts.account_order,
acc.id AS accounts_class_id,
acc.zone,
acc.book,
acc.service_class,
acc.size,
acc.account_no AS series_no,
accounts.status,
application_address.address_line,
concessionaires.firstname,
concessionaires.middlename,
concessionaires.lastname,
mb.brand_name,
m.meter_no,
ms.meter_status
FROM
accounts
INNER JOIN
applications
ON accounts.application_id = applications.id
LEFT JOIN
application_address
ON applications.application_no = application_address.application_no
LEFT JOIN
concessionaires
ON applications.concessionaire_no = concessionaires.concessionaire_no
INNER JOIN
accounts_classifications acc
ON accounts.id = acc.account
INNER JOIN meter_history mh
ON mh.id = (SELECT id FROM meter_history mh2
WHERE mh2.account_id = accounts.id
ORDER BY mh2.status_date DESC
LIMIT 1)
LEFT JOIN
meter_status ms
ON mh.meter_status = ms.id
INNER JOIN
meter m
ON mh.meter = m.id
LEFT JOIN
meter_brand mb
ON m.meter_brand = mb.id
WHERE
acc.book = 1 AND acc.zone = 20 AND applications.status = '6' AND acc.status = '1'
This would return only accounts with meter history on it.
Where should I put my IF condition so I get accounts with no history as well, or if that is even possible with my query. Thank you!

Mysql subqueries problem with data retrieved

I'm trying to run a query but my outcome is not what i need.
So the problem is:
A user can be diretor and if this is the case he can see all activities from his department, and he can be user of another department too, in this case not director but only user.
I have 8 departments each with one director, so the following query should give me the activities of the department and the activities of this particular user in other department:
SELECT t1.idAtividade,
t1.idProfessor,
t2.Escola,
t1.Atividade,
t1.Periodo,
t1.Mes,
t1.haveClasses,
t1.DataPrevista,
t1.Destinatarios,
t1.Orcamento,
t1.PdfAtividade,
t1.Avaliacao,
t1.PdfAvaliacao,
t1.idProfessor,
p.Nome,
g.Grupo,
d.Departamento,
p2.Projeto,
t1.idProjeto
FROM atividades AS t1
INNER JOIN professores p on t1.idProfessor = p.idProfessor
INNER JOIN atividadesgrupos ag on t1.idAtividade = ag.idAtividade
INNER JOIN grupos g on ag.idGrupo = g.idGrupo
INNER JOIN departamentosatividades da on t1.idAtividade = da.idAtividade
INNER JOIN departamentos d on da.idDepartamento = d.idDepartamento
INNER JOIN escolas AS t2 ON (t2.idEscola = t1.idEscola)
INNER JOIN anosescolares AS ae ON (t1.idAnoEscolar = ae.idAnoEscolar)
INNER JOIN projetos p2 on t1.idProjeto = p2.idProjeto
WHERE ae.Estado = 1 AND (da.idDepartamento = :id_dpt and ag.idGrupo = :idGrupo)
ORDER BY (t1.idProfessor = :idProfessor) DESC, t1.idProfessor;");
This query is not working because the department have 22 activities but this user (idProfessor) has 5 in this department and 14 more in another department (defined by idGrupo)
I think i will need a subquery right?

How to use same field from a table twice in one query

I have two tables: calls and employees. In the calls tables I have a field enter_emp_id and another follow_emp_id. They hold the values for which employee entered the call and which employee is assigned to the call. My second table employees has employee_id and employee fields. I am able to write a query to show results with an employee name for who entered the call, but not who it is assigned to. I do have other values in the query, but I need to get the 2nd employee name to show in the results. Here is what I am using so far:
SELECT
`calls`.`call_id`,
`calls`.`enter_date`,
`call_state`.`call_state`,
`customers`.`customer_name`,
`calls`.`comments`,
`employees`.`employee`,
`call_reasons`.`call_reason`
FROM
`customers`
INNER JOIN `calls` ON (`customers`.`customer_id` = `calls`.`customer_id`)
INNER JOIN `employees` ON (`employees`.`employee_id` = `calls`.`enter_emp_id`)
INNER JOIN `call_state` ON (`call_state`.`call_state_id` = `calls`.`call_state_id`)
INNER JOIN `call_reasons` ON (`call_reasons`.`call_reason_id` = `calls`.`call_reason_id`)
WHERE
`calls`.`call_id` = $call_id;
You need to join to the employee table TWICE... once for each employee id association, and use the ALIAS of the respective to get the values intended. And aliasing the tables and removal of unnecessary tick marks not required. Only needed for possible reserved word conflicts.
SELECT
c.call_id,
c.enter_date,
cs.call_state,
cust.customer_name,
c.comments,
entered.employee,
assigned.employee as AssignedEmployee,
cr.call_reason
FROM
calls c
INNER JOIN customers cust
ON c.customer_id = cust.customer_id
INNER JOIN employees entered
ON c.enter_emp_id = entered.employee_id
INNER JOIN employees assigned
ON c.enter_emp_id = assigned.employee_id
INNER JOIN call_state cs
ON c.call_state_id = cs.call_state_id
INNER JOIN call_reasons cr
ON c.call_reason_id = cr.call_reason_id
WHERE
c.call_id = $call_id;
I hope i understand you problem. You can use AS to change or shorten table name for sql usage
SELECT
`calls`.`call_id`,
`calls`.`enter_date`,
`call_state`.`call_state`,
`customers`.`customer_name`,
`calls`.`comments`,
`employees`.`employee`,
`assigned`.`employee` as assigned_employee,
`call_reasons`.`call_reason`
FROM
`customers`
INNER JOIN `calls` ON (`customers`.`customer_id` = `calls`.`customer_id`)
INNER JOIN `employees` ON (`employees`.`employee_id` = `calls`.`enter_emp_id`)
INNER JOIN `employees` AS `assigned` ON (`assigned`.`employee_id` = `calls`.`follow_emp_id`)
INNER JOIN `call_state` ON (`call_state`.`call_state_id` = `calls`.`call_state_id`)
INNER JOIN `call_reasons` ON (`call_reasons`.`call_reason_id` = `calls`.`call_reason_id`)
WHERE
`calls`.`call_id` = $call_id;
Thanks the following worked:
SELECT
c.call_id,
c.enter_date,
cs.call_state,
cust.customer_name,
c.comments,
entered.employee,
entered.employee,
cr.call_reason
FROM
calls c
INNER JOIN customers cust
ON c.customer_id = cust.customer_id
INNER JOIN employees entered
ON c.enter_emp_id = entered.employee_id
INNER JOIN employees assigned
ON c.enter_emp_id = assigned.employee_id
INNER JOIN call_state cs
ON c.call_state_id = cs.call_state_id
INNER JOIN call_reasons cr
ON c.call_reason_id = cr.call_reason_id
WHERE
c.call_id = $call_id;

SQL JOIN Query - linking four tables

I have the SQL to display ALL the activities and relative Admin permissions (if any) for that activity.
Current SQL Code:
SELECT `activities`.*, `admins`.`admin_role_id`
FROM (`activities`)
LEFT JOIN `admins` ON `admins`.`activity_id`=`activities`.`id` AND admins.member_id=27500
WHERE `activities`.`active` = 1
Returning:
id | name | description | active | admin_role_id (or null)
I then need to detect whether they are an active member within that Activity.
I have the following SQL code:
SELECT DISTINCT `products`.`activity_ID` as joinedID
FROM (`transactions_items`)
JOIN `transactions` ON `transactions`.`id` = `transactions_items`.`id`
JOIN `products` ON `products`.`id` = `transactions_items`.`product_id`
JOIN `activities` ON `activities`.`id` = `products`.`activity_ID`
WHERE `transactions`.`member_id` = 27500
AND `activities`.`active` = 1
Is there any way to merge this into one SQL query. I can't figure out how to use the correct JOIN queries, because of the complexity of the JOINs.
Help please, thanks! :)
Try like this
SELECT `activities`.*, `admins`.`admin_role_id`
FROM (`activities`)
LEFT JOIN `admins` ON `admins`.`activity_id`=`activities`.`id` AND admins.member_id=27500
JOIN (`transactions_items`
JOIN `transactions` ON `transactions`.`id` = `transactions_items`.`id`
JOIN `products` ON `products`.`id` = `transactions_items`.`product_id`)
ON `activities`.`id`=`products`.`activity_ID`
WHERE `transactions`.`member_id` = 27500
AND `activities`.`active` = 1
Seems to me that a query like this would be marginally more comprehensible and (I think) adhere more closely to the spec...
SELECT c.*
, d.admin_role_id
FROM activities c
LEFT
JOIN admins d
ON d.activity_id = c.id
AND d.member_id = 27500
LEFT
JOIN products p
ON p.activity_ID = c.id
LEFT
JOIN transactions_items ti
ON ti.product_id = p.id
LEFT
JOIN transactions t
ON t.id = ti.id
AND t.member_id = 27500
WHERE c.active = 1

Joining 6 MySQL tables for sports application

I'm creating a database that is going to be used for a sporting competition. To view the results of a game, I need to join six tables together:
Season s
Round r
Rounddetails rd
Match m
Matchdetails md
Game g
I want the select statement to return something like this:
g.gameid, g.pointsfor, g.pointsagainst, md.matchdetailsid, m.matchid, rd.rounddetailsid, r.roundid, s.seasonid
Could anyone help me write a MySQL statement that will return that?
Please click the link to view the tables
EDIT: so far I have tried this query:
select
`s`.`seasonID` AS `seasonID`,
`r`.`roundID` AS `roundid`,
`rd`.`roundDetailsID` AS `roundDetailsID`,
`m`.`matchid` AS `matchid`,
`md`.`matchDetailsID` AS `matchDetailsID`,
`g`.`gameid` AS `gameid`,
`g`.`pointsfor` AS `pointsfor`,
`g`.`pointsagainst` AS `pointsagainst`
from (((((`season` `s` left join `round` `r` on((`s`.`SeasonID` = `r`.`SeasonID`)))
left join `rounddetails` `rd` on((`r`.`RoundID` = `rd`.`RoundID`)))
left join `match` `m` on((`rd`.`matchid` = `m`.`matchid`)))
left join `matchdetails` `md` on((`m`.`matchid` = `md`.`matchid`)))
left join `game` `g` on((`md`.`matchdetailsid` = `g`.`matchdetailsid`)))
SELECT DISTINCT g.gameid, g.pointsfor, g.pointsagainst, md.matchdetailsid, m.matchid, rd.rounddetailsid, r.roundid, s.seasonid
FROM Match AS m
INNER JOIN MatchDetails as md
ON Match.MatchId = MatchDetails.MatchId
INNER JOIN Game as g
ON MatchDetails.MatchDetailSid = MatchDetailSid
INNER JOIN RoundDetails as rd
ON Match.MatchId = RoundDetails.MatchId
INNER JOIN Round as r
ON Round.RoundId = RoundDetails.RoundId
INNER JOIN Season as s
ON Round.SeasonId = Season.SeasonId
WHERE MatchId = 1