I can't get a left join to work in my prepared statement.
"SELECT DISTINCT(a.auto_id), m.merk, a.model, a.uitvoering, a.standaardtekst, a.prijs, a.prijs2, a.prijs3, a.handelsprijs, a.aanmaak, s.soort, z.prijs_id
/*,GROUP_CONCAT(DISTINCT(apc.NL) ORDER BY apc.NL ASC)*/
FROM autocom_new.auto_new a
INNER JOIN autocom_new.tbl_merken m
ON a.merk = m.merk_id
INNER JOIN autocom_new.tbl_soort s
ON a.soort = s.soort_id
INNER JOIN autocom_new.auto_zoekmachines z
ON a.auto_id = z.auto_id
/*
LEFT JOIN autocom_new.auto_accessoire acc
ON a.auto_id = acc.auto_id
LEFT JOIN autocom_new.tbl_autopricecode_new apc
ON acc.code_id = apc.code_id
*/
WHERE a.ac LIKE ? AND a.flag = ?"
The commented parts are the parts that aren't working.
I have no idea what I'm doing wrong.
EDIT
First of all I forgot that both tables have a column ac, so I've changed the where statement a bit. The left joins are working now, but the part in the select is still not working
So the problem was that I forgot a GROUP BY.
"SELECT DISTINCT(a.auto_id), m.merk, a.model, a.uitvoering, a.standaardtekst, a.prijs, a.prijs2, a.prijs3, a.handelsprijs, a.aanmaak, s.soort, z.prijs_id,
GROUP_CONCAT(DISTINCT(apc.NL) ORDER BY apc.NL ASC)
FROM autocom_new.auto_new a
INNER JOIN autocom_new.tbl_merken m
ON a.merk = m.merk_id
INNER JOIN autocom_new.tbl_soort s
ON a.soort = s.soort_id
INNER JOIN autocom_new.auto_zoekmachines z
ON a.auto_id = z.auto_id
LEFT JOIN autocom_new.auto_accessoire acc
ON a.auto_id = acc.auto_id
LEFT JOIN autocom_new.tbl_autopricecode_new apc
ON acc.code_id = apc.code_id
WHERE a.ac LIKE ? AND a.flag = ?
GROUP BY a.auto_id"
Related
Hello i'm learning sql and i have some issues with joins(which i have problems understanding them)
I have this issue
#1066 - Not unique table/alias: 'tbl_respuestas'
what the query supposed to do, is count how many people(general,ignore user) has answer 'x', in 'y' question of 'z' survey
SELECT COUNT(*) FROM tbl_respuestas
INNER JOIN tbl_encuesta_usuario ON tbl_encuesta_usuario.user_id = user.id
INNER JOIN tbl_encuesta ON tbl_encuesta.id = tbl_encuesta_usuario.tbl_encuesta_id
INNER JOIN tbl_encuesta_has_tbl_preguntas ON tbl_encuesta_has_tbl_preguntas.tbl_encuesta_id = tbl_encuesta.id
INNER JOIN tbl_preguntas ON tbl_preguntas.id = tbl_encuesta_has_tbl_preguntas.tbl_preguntas_id
INNER JOIN tbl_preguntas_has_tbl_respuestas ON tbl_preguntas_has_tbl_respuestas.tbl_preguntas_id = tbl_preguntas.id
INNER JOIN tbl_respuestas ON tbl_respuestas.id = tbl_preguntas_has_tbl_respuestas.tbl_respuestas_id
WHERE tbl_respuestas.respuesta = 2
line SELECT COUNT(*) FROM tbl_respuestas
and line INNER JOIN tbl_respuestas
does not makes sense, hence the error.
Unless it is what you want then you need to give then different name/alias like below:
SELECT COUNT(*) FROM tbl_respuestas r
INNER JOIN tbl_respuestas r2
Also as a quick note you can rewrite the entire sql like below.
It is good practice to give your tables a name for shorter referencing and makes the sql look a little cleaner.
Also if both tables you are trying to join has the same column name then you can use the keyword USING instead of having to write that long line tbl_encuesta_usuario.user_id = user.id
Please be sure to put r and r2 in its prope place
SELECT COUNT(*) FROM tbl_respuestas r
INNER JOIN tbl_encuesta_usuario u USING user_id
INNER JOIN tbl_encuesta e ON e.id = u.tbl_encuesta_id
INNER JOIN tbl_encuesta_has_tbl_preguntas hp ON hp.tbl_encuesta_id = e.id
INNER JOIN tbl_preguntas p ON p.id = hp.tbl_preguntas_id
INNER JOIN tbl_preguntas_has_tbl_respuestas hr ON hr.tbl_preguntas_id = p.id
INNER JOIN tbl_respuestas r2 ON r2.id = hr.tbl_respuestas_id
WHERE r.respuesta = 2
I have a complex query consisting of lots of Inner and Left Joins and i am attempting to get the number of record back in a certain table using the COUNT Function of SQL.
I am attempting to get the number of records in the 'held_proposals' table for each proposal using the proposal_id since I'll be outputting the data into a table using a foreach loop.
In essence I would like to show how many students have 'held' a proposal against each proposal.
This was my attempt:
SELECT p.proposal_id, p.proposal_title, p.description, u.user_record_id, u.forename, u.surname, c.course_title, h.*,
GROUP_CONCAT(DISTINCT t.tag_title) AS tags FROM proposal p
LEFT JOIN user u on u.user_record_id = p.user_record_id
LEFT JOIN course_details c on c.course_code = p.course_code
LEFT JOIN record r on r.proposal_id = p.proposal_id
LEFT JOIN proposal_tags pt on pt.proposal_id = p.proposal_id
LEFT JOIN tag_details t on t.tag_code = pt.tag_code
LEFT JOIN (
SELECT h.student_record_id, COUNT(*) AS Held
FROM held_proposals h
) H on h.proposal_id = p.proposal_id
WHERE p.source = "Supervisor"
AND (r.status_code not in (3,8) OR r.status_code IS NULL)
GROUP BY p.proposal_id;
the table currently looks like this:
I would like to add the value returned from the 'held_proposals' table for each proposal at the end of the table as another column.
Could any please provide me with some guidance as to how I can achieve this in the SQL query. Thank you in advance.
You need to group the count inside the query which you are joining something as
SELECT
p.proposal_id,
p.proposal_title,
p.description,
u.user_record_id,
u.forename,
u.surname,
c.course_title, coalesce(h.Held,0) as `Held`,
GROUP_CONCAT(DISTINCT t.tag_title) AS tags
FROM proposal p
LEFT JOIN user u on u.user_record_id = p.user_record_id
LEFT JOIN course_details c on c.course_code = p.course_code
LEFT JOIN record r on r.proposal_id = p.proposal_id
LEFT JOIN proposal_tags pt on pt.proposal_id = p.proposal_id
LEFT JOIN tag_details t on t.tag_code = pt.tag_code
LEFT JOIN (
SELECT proposal_id, COUNT(*) AS Held
FROM held_proposals group by proposal_id
) h on h.proposal_id = p.proposal_id
WHERE p.source = "Supervisor"
AND (r.status_code not in (3,8) OR r.status_code IS NULL)
GROUP BY p.proposal_id;
I'm a little confused in here and need some help...
the situation is I've made three tables(fr_Leagues, fr_nations and fr_confeds), all i want to do is add a league which shows the name of the categories not the i.d with pagination. Here is the code:
NOW FIXED!
"SELECT
a.id as confed_id,
a.fr_short_name as confed_name,
b.id as nation_id,
b.fr_name as nation_name,
c.id as league_id,
c.fr_name as league_name"
." FROM fr_confeds as a
INNER JOIN fr_nations as b ON a.id = b.confed_id
INNER JOIN fr_leagues as c ON b.id = c.nation_id"
." LIMIT $paginate->start, $paginate->limit"
You are missing on how to link the different tables together. On each INNER JOIN, you need to have it:
INNER JOIN fr_nations ON a.<someColumn> = b.<anotherColumn> INNER JOIN fr_leagues ON a.<someColumn> = b.<anotherColumn>
USE THIS QUERY
SELECT * FROM fr_confeds as A
INNER JOIN fr_nations as B ON A.id = B.confed_id
INNER JOIN fr_leagues as C ON B.confed_id = C.league_id
LIMIT $paginate->start, $paginate->limit
I'm trying to find some records based on the tags they have. In order to find out which tags a record has i add them to the result using a subquery. To find out which results should be returned i added a having statement on the end of the query. But something tells me this is not the best way.
SELECT e.id, e.title, e.text, e.introduction,
UNIX_TIMESTAMP(e.starts_on) AS starts_on,
UNIX_TIMESTAMP(e.ends_on) AS ends_on,
m.id AS meta_id,
m.url,
cm.title AS category_title,
cm.url AS category_url,
CONCAT(
",",
(
SELECT GROUP_CONCAT(t.id)
FROM modules_tags AS mt
JOIN tags AS t ON t.id = mt.tag_id
WHERE mt.other_id = e.id
),","
) AS tags_search
FROM event_posts AS e
INNER JOIN meta AS m ON e.meta_id = m.id
LEFT JOIN event_categories AS c ON e.category_id = c.id
LEFT JOIN meta AS cm ON c.meta_id = cm.id
LEFT JOIN modules_tags AS mt ON mt.other_id = e.id
LEFT JOIN tags AS t ON t.id = mt.tag_id
WHERE 1 HAVING tags_search LIKE '%,5,%' AND tags_search LIKE '%,6,%'
FIND_IN_SET() is the best way to find values in comma separated values in MySQL.
I have Doctrine2 DQL query but I want to build it with QueryBuilder, I have noticed that produced DQL is somewhat different from the handcrafted one, and I'm wondering what am I missing here - maybe I'm not aware of something or doing things wrong way?
Ok, some details:
My handcrafted query looks like this:
select count(fi.id)
from Entities\Content\FolderLookup fl
join fl.site fls
join fl.folder flf,
Entities\Content\FolderItem fi
join fi.site fis
join fi.folder fif
join fi.item it
join it.type tp
join it.content ic
where fl.namePath = ?1
and tp.name = ?2
and fls.id = fis.id
and flf.id = fif.id
Now, I'm trying to reproduce it like this with QueryBuilder:
$qb->select("count(fi.id)")->from("Entities\Content\FolderLookup", "fl")->join("fl.site","fls")->join("fl.folder", "flf");
$qb->from("Entities\Content\FolderItem","fi")->join("fi.site","fis")->join("fi.folder","fif");
$qb->join("fi.item","it")->join("it.type","tp")->join("it.content","ic");
$wherePart = $qb->expr()->andx();
$wherePart->add($qb->expr()->eq("fl.namePath","?1"));
$wherePart->add($qb->expr()->eq("tp.name","?2"));
$wherePart->add($qb->expr()->eq("fls.id","fis.id"));
$wherePart->add($qb->expr()->eq("flf.id","fif.id"));
$qb->where($wherePart);
This however is producing this DQL query:
SELECT count(fi.id) FROM Entities\Content\FolderLookup fl,
Entities\Content\FolderItem fi
INNER JOIN fl.site fls
INNER JOIN fl.folder flf
INNER JOIN fi.site fis
INNER JOIN fi.folder fif
INNER JOIN fi.item it
INNER JOIN it.type tp
INNER JOIN it.content ic
WHERE (fl.namePath = ?1)
AND (tp.name = ?2)
AND (fls.id = fis.id)
AND (flf.id = fif.id)
As you can see there is part of this missing comapring to handcrafted one (First line):
fl join fl.site fls join fl.folder flf
I'm not sure why these joins are missing as I am defining them here:
$qb->select("count(fi.id)")->from("Entities\Content\FolderLookup", "fl")->join("fl.site","fls")->join("fl.folder", "flf");
Update:
The fun part starts, when DQL gets translated into SQL - in this case MySQL:
Handcrafted one becomes:
SELECT count(f0_.id) AS sclr0 FROM FolderLookup f1_ INNER JOIN Site s2_ ON f1_.site_id = s2_.id INNER JOIN Folder f3_ ON f1_.folder_id = f3_.id, FolderItem f0_ INNER JOIN Site s4_ ON f0_.site_id = s4_.id INNER JOIN Folder f5_ ON f0_.folder_id = f5_.id INNER JOIN Item i6_ ON f0_.item_id = i6_.id INNER JOIN ItemType i7_ ON i6_.type_id = i7_.id INNER JOIN ItemContent i8_ ON i6_.content_id = i8_.id WHERE f1_.namePath = ? AND i7_.name = ? AND s2_.id = s4_.id AND f3_.id = f5_.id
Where generated one looks like this:
SELECT count(f0_.id) AS sclr0 FROM FolderLookup f1_, FolderItem f0_ INNER JOIN Site s2_ ON f1_.site_id = s2_.id INNER JOIN Folder f3_ ON f1_.folder_id = f3_.id INNER JOIN Site s4_ ON f0_.site_id = s4_.id INNER JOIN Folder f5_ ON f0_.folder_id = f5_.id INNER JOIN Item i6_ ON f0_.item_id = i6_.id INNER JOIN ItemType i7_ ON i6_.type_id = i7_.id INNER JOIN ItemContent i8_ ON i6_.content_id = i8_.id WHERE (f1_.namePath = ?) AND (i7_.name = ?) AND (s2_.id = s4_.id) AND (f3_.id = f5_.id)
And this is invalid statement, as database returns with:
Column not found: 1054 Unknown column 'f1_.site_id' in 'on clause'
Any ideas welcome.
It seems the DQL parser is wrongly positioning the joins to the wrong from.
My initial suggestion is to try to make only 1 FROM item and a subselect.
Also, I'd love if you add the same content you asked here in our bug tracking: http://www.doctrine-project.org/jira/browse/DDC
Thanks a lot!
Guilherme Blanco
Doctirne Core Developer
they are not missing. just reordered
INNER JOIN fl.site fls
INNER JOIN fl.folder flf