I want to see only one record from the joined table fr_movements with the newest sched_date yet I am always getting the oldedst sched_date. Since the ORDER BY sorts by the sched_date and I am grouping by the people.ID I am getting only one record from fr_movements as expected, just the wrong one.
SELECT `fr_movements`.`ID`, fr_movements_list.movement_type,
fr_movements.sched_date, fr_movements.comp_date, people.firstname, people.lastname
FROM fr_movements
LEFT JOIN people ON people.ID = fr_movements.`people_id`
LEFT JOIN fr_movements_list ON (fr_movements.move_type_id = fr_movements_list.ID)
WHERE fr_movements.org_id = 25 AND fr_movements.move_type_id IN (54,53,52,51,50,55)
GROUP BY people.ID
ORDER BY people.org_name, fr_movements.sched_date ASC
Anybody know how to do this properly?
as #bluefeet mentioned
you are using GROUP BY incorrectly. GROUP BY is supposed to be used with an aggregate function
You need to put all columns after GROUP BY, but it is complicated. I think DISTINCT might help you. like this:
SELECT *
FROM
(
SELECT DISTINCT people.org_name, `fr_movements`.`ID`, fr_movements_list.movement_type,
fr_movements.sched_date, fr_movements.comp_date, people.firstname, people.lastname
FROM fr_movements
LEFT JOIN people ON people.ID = fr_movements.`people_id`
LEFT JOIN fr_movements_list ON (fr_movements.move_type_id = fr_movements_list.ID)
WHERE fr_movements.org_id = 25
AND fr_movements.move_type_id IN (54,53,52,51,50,55)
) x
ORDER BY org_name, sched_date ASC
If not works, would you post your data & schema into sqlfiddle? That makes us happy.
Related
I am having an issue with my multi join SQL statement, where I need to get the last entries of the table and not the first. I have 3 tables that I try to query based on this statement:
SELECT DISTINCT i.id,i.hz,i.v,i.t,i.u,i.temp, i.c1, s.server, s.hostname, h.codes,s.cpus FROM `dc_servers` AS s INNER JOIN `dc_hardware` AS h ON s.server = h.server INNER JOIN `dc_systemusage` AS i ON s.server = i.server GROUP BY i.server
The tables dc_servers & dc_hardware only has 1 row per server, however the table dc_systemusage has many rows with the same server, as new info is being added.
When I run the query, I get the first entries from the dc_systemusage, but I need to get the latest entries from that table, for me it sounds like I need an ORDER BY, however if I add that to the end of the query like this:
SELECT DISTINCT i.id,i.hz,i.v,i.t,i.u,i.temp, i.c1, s.server, s.hostname, h.codes,s.cpus FROM `dc_servers` AS s INNER JOIN `dc_hardware` AS h ON s.server = h.server INNER JOIN `dc_systemusage` AS i ON s.server = i.server GROUP BY i.server ORDER BY i.id DESC
then I am just ordering the result, which is not what I am looking for.
I hope someone can guide me in the right direction as for how I can get the latest rows and not the first from the table dc_systemusage
I hope I have provided the needed information to guide me, else please do let me know and I will add whatever is neeeded.
Thank you all.
You can find dc_systemusage lastest ids in subquery and use with WHERE ... IN
SELECT i.id,i.hz,i.v,i.t,i.u,i.temp, i.c1, s.server, s.hostname, h.codes,s.cpus
FROM `dc_servers` AS s
INNER JOIN `dc_hardware` AS h ON s.server = h.server
INNER JOIN `dc_systemusage` AS i ON s.server = i.server
WHERE i.id IN (SELECT max(dc_systemusage.id) FROM dc_systemusage GROUP BY dc_systemusage.server)
and check a great answer at https://stackoverflow.com/a/3800572/7174186
I have a question about a SQL, I have never worked with the select sub and I ended up getting lost with it.
Meu SQL:
SELECT CLI.id, CLI.nome, CLI.senha, CLI.email, CLI.cpf, CLI.celular, CLI.data_nasc, CLI.genero, CLI.data_cadastro, CLI.status, CLI.id_socket, ATEN.mensagem, ARQ.nome AS foto, ATEN.data_mensagem
FROM ut_clientes AS CLI
LEFT JOIN ut_arquivos AS ARQ ON (ARQ.id_tipo = CLI.id AND ARQ.tipo = "ut_clientes")
INNER JOIN ut_atendimentos AS ATEN ON (ATEN.id_usuario_envio = CLI.id)
WHERE ATEN.id_usuario_envio != 59163
GROUP BY CLI.id
ORDER BY ATEN.data_mensagem
DESC
Well, what I would like to do is group the messages according to the customer ID and bring only the last message recorded in the database according to the data_mensagem.
I have tried in many ways but always the last one that is displayed is the first message inserted in DB.
If anyone can help me, I'll be grateful. Thank you guys!
This may help you... I am using a join to a pre-query (PQ alias). This query just goes to your messages and grabs the client ID and the most recent based on the MAX(). By doing the group by here, it will at most return 1 record per client. I also have the WHERE clause to exclude the one ID you listed.
From THAT result, you do a simple join to the rest of your query.
SELECT
CLI.id,
CLI.nome,
CLI.senha,
CLI.email,
CLI.cpf,
CLI.celular,
CLI.data_nasc,
CLI.genero,
CLI.data_cadastro,
CLI.status,
CLI.id_socket,
ATEN.mensagem,
ARQ.nome AS foto,
PQ.data_mensagem
FROM
ut_clientes AS CLI
LEFT JOIN ut_arquivos AS ARQ
ON CLI.id = ARQ.id_tipo
AND ARQ.tipo = "ut_clientes"
INNER JOIN
( select
ATEN.id_usuario_envio,
MAX( ATEN.data_mensagem ) as MostRecentMsg
from
ut_atendimentos AS ATEN
where
ATEN.id_usuario_envio != 59163
group by
ATEN.id_usuario_envio ) PQ
ON CLI.id = PQ.id_usuario_envio
GROUP BY
CLI.id
ORDER BY
PQ.data_mensagem DESC
With this query I'm supposed to get the latest message from the chats table for every agreement I get, as well as all the information including business name, etc.
I kind of solved it using GROUP BY in the subquery, but it is not the way I wanna fix this, because I don't understand why it does act as a RIGHT JOIN, and WHY doesn't it order it in the way I meant in the subquery:
SELECT agreements.id, agreements.`date`, agreements.state, business.name, chat.message
FROM ((agreements JOIN
business_admin
ON agreements.business = business_admin.business AND business_admin.user = 1
) LEFT JOIN
business
ON business.id = agreements.business
) LEFT JOIN
(SELECT agreements_chat.agreement, agreements_chat.message
FROM agreements_chat
WHERE origin = 0
ORDER BY agreements_chat.`date` DESC
) AS chat
ON agreements.id = chat.agreement
I really appreciate your help, thank you so much!
It's not working because the subquery in your left join returns more than one rows, hence the duplication of rows you get.
SELECT agreements.id,
agreements.`date`,
agreements.state,
business.name,
chat.message
FROM agreements
JOIN business_admin
ON agreements.business = business_admin.business AND
business_admin.user = 1
LEFT JOIN
business
ON business.id = agreements.business
LEFT JOIN
agreements_chat chat
ON chat.origin = 0 AND
chat.agreement = agreements.id
LEFT JOIN
(
SELECT agreement, max(`date`) last_date
FROM agreements_chat
GROUP BY agreement
) last_chat
ON chat.agreement = last_chat.agreement AND
chat.`date` = last_chat.last_date
Note that (as per #GordonLinoff comment) you don't need parenthese around your joins.
Hi I need to Order using count from another table. i found this great example, im using it as model for a query i need. SQL - How To Order Using Count From Another Table
The model im using for query is:
SELECT bloggers.*, COUNT(post_id) AS post_count
FROM bloggers LEFT JOIN blogger_posts
ON bloggers.blogger_id = blogger_posts.blogger_id
GROUP BY bloggers.blogger_id
ORDER BY post_count
But i have a syntax problem in mine, i guess, im trying to replace the next query, with the one that counts another table... but i cant manage to do it. Original query:
$res3=$db->execute_query("select id,scode,sname from ".TABLE_PREFIX."states where ccode=? order by sname asc",array($country));
Trying to replace with this query..
$res3=$db->execute_query("select ".TABLE_PREFIX."states.* , COUNT(".TABLE_PREFIX."items.state) AS state_count FROM ".TABLE_PREFIX."states LEFT JOIN ".TABLE_PREFIX."items ON ".TABLE_PREFIX."states.id = ".TABLE_PREFIX."items.state GROUP BY ".TABLE_PREFIX."states.id ORDER BY state_count DESC",array($country));
Try this:
$res3=$db->execute_query("select a.* , COUNT(b.state) AS state_count FROM states a
LEFT JOIN items b ON a.id = b.state
GROUP BY a.id
ORDER BY state_count DESC",array($country));
I am attempting to create a subquery in Access but I am receiving an error stating that one record can be returned by this subquery. I am wanting to find the top 10 companies that have the most pets then I want to know the name of those pets. I have never created a subquery before so I am not sure where I am going wrong. Here is what I have:
SELECT TOP 10 dbo_tGovenrnmentRegulatoryAgency.GovernmentRegulatoryAgency
(SELECT dbo_tPet.Pet
FROM dbo_tPet)
FROM dbo_tPet INNER JOIN dbo_tGovenrnmentRegulatoryAgency ON
dbo_tPet.GovernmentRegulatoryAgencyID =
dbo_tGovenrnmentRegulatoryAgency.GovernmentRegulatoryAgencyID
GROUP BY dbo_tGovenrnmentRegulatoryAgency.GovernmentRegulatoryAgency
ORDER BY Count(dbo_tPet.PetID) DESC;
Consider this solution, requiring a subquery in the WHERE IN () clause:
SELECT t1.GovernmentRegulatoryAgency, dbo_tPet.Pet,
FROM dbo_tPet
INNER JOIN dbo_tGovenrnmentRegulatoryAgency t1 ON
dbo_tPet.GovernmentRegulatoryAgencyID = t1.GovernmentRegulatoryAgencyID
WHERE t1.GovernmentRegulatoryAgency IN
(SELECT TOP 10 t2.GovernmentRegulatoryAgency
FROM dbo_tPet
INNER JOIN dbo_tGovenrnmentRegulatoryAgency t2 ON
dbo_tPet.GovernmentRegulatoryAgencyID = t2.GovernmentRegulatoryAgencyID
GROUP BY t2.GovernmentRegulatoryAgency
ORDER BY Count(dbo_tPet.Pet) DESC);
Table aliases are not needed but I include them for demonstration.
This should hopefully do it:
SELECT a.GovernmentRegulatoryAgency, t.NumOfPets
FROM dbo_tGovenrnmentRegulatoryAgency a
INNER JOIN (
SELECT TOP 10 p.GovernmentRegulatoryAgencyID, COUNT(p.PetID) AS NumOfPets
FROM dbo_tPet p
GROUP BY p.GovernmentRegulatoryAgencyID
ORDER BY COUNT(p.PetID) DESC
) t
ON a.GovernmentRegulatoryAgencyID = t.GovernmentRegulatoryAgencyID
In a nutshell, first get the nested query sorted, identifying what the relevant agencies are, then inner join back to the agency table to get the detail of the agencies so picked.