Joining 3 tables into 1 - SQL - sql

I'm trying to LEFT OUTER JOIN two tables and then INNER JOIN another table together in Access 2007.
SELECT RestaurantName,
StreetAddress,
City,
State,
Zip,
RestaurantWebsite,
MenuLink,
RestaurantTimes,
PhoneNumber,
PictureTitle,
PictureTitle3,
PictureTitle3,
PictureTitle4,
PictureTitle,
TagType
FROM Restaurants r
LEFT OUTER JOIN RestaurantPictures rp ON r.ID = rp.ID
INNER JOIN RestaurantTag rt ON r.TagID = t.TagID
I keep getting a Syntax Error in my query expression. "INNER JOIN RestaurantTag rt ON rt.TagID = r.TagID"
I have a Corresponding TagID in both the Restaurant and RestaurantTag tables. I can't seem figure out why I'm getting this error.I can successfully JOIN the first two tables but the third table is the one giving me trouble. Any suggestions would be greatly appreciated!


Without seeing a table definition this is a guess, but you have an error:
INNER JOIN RestaurantTag rt ON r.TagID = t.TagID should be INNER JOIN RestaurantTag rt ON r.TagID = rt.TagID


Try to put the join expression in ()
(Restaurants r LEFT OUTER JOIN RestaurantPictures rp ON r.ID = rp.ID)
INNER JOIN RestaurantTag rt ON r.TagID = t.TagID


SELECT
RestaurantName, StreetAddress, City, State, Zip, RestaurantWebsite,
MenuLink, RestaurantTimes, PhoneNumber, PictureTitle, PictureTitle3,
PictureTitle3, PictureTitle4, PictureTitle, TagType
FROM
Restaurants r LEFT OUTER JOIN RestaurantPictures rp ON r.ID = rp.ID
INNER JOIN RestaurantTag rt ON r.TagID = rt.TagID

Related

how to select some fields from tables in CakePHP

I tried to make query in cakephp with joins, but i want to get more fileds,
Here the query sql :
SELECT
sd.debut,
sd.fin,
fr.id,
f.id as formtaion_id,
s.id as seance_id,
fr.nom as formateur,
f.nom as formation,
r.title,
f.module,
sd.module as partie ,
f.couleur
FROM seances s
INNER JOIN formations f on s.formation_id = f.id
INNER JOIN seances_dates sd on s.id = sd.seance_id
INNER JOIN salles sa on sa.id = s.salle_id
INNER JOIN regions r on r.id = sa.region_id
INNER JOIN presence_formateurs pf ON pf.seance_id = s.id
INNER JOIN formateurs fr ON fr.id = pf.formateur_id
WHERE fr.archived = 0
AND fr.deleted is null
AND (
(sd.debut between '".$from."' and '".$to."')
OR
(sd.fin between '".$from."' and '".$to."')
)
GROUP BY sd.id
ORDER BY sd.debut
please help me to make that query in cakephp :
ClassRegistry::init('seance')->find('all'....

You should read very carefully
1. How to Retrieve data in CakePHP and
2. How to make Relation with different table

How to select multiple many to many in relation with a single table

I'm currently working with database, but I've got stuck with a select query.
However, I'm not database expert.
The query should return the data from a table that has two relationships of many to many.
This is my tables Diagram that would shows the concept of my question
The Select Query should View three columns, which are VidTbl.Name, ActorTbl.Name and SubTitelTbl.name.
So, I've read and search in the Internet and I've given tries
First try
SELECT
VidTbl.NAME AS Video_Titel_Name,
ActorTbl.NAME AS Actor_Name
FROM ActorInVid
INNER JOIN VidTbl
ON VidTbl.Id = ActorInVid.FKVidId
INNER JOIN ActorTbl
ON ActorTbl.Id = ActorInVid.FKActorId
UNION all
SELECT
VidTbl.NAME AS Video_Titel_Name,
SubTitelTbl.NAME AS SubTitel_Langu
FROM SubTitelInVid
INNER JOIN VidTbl
ON VidTbl.Id = SubTitelInVid.FKVidId
INNER JOIN SubTitelTbl
ON SubTitelTbl.Id = SubTitelInVid.FKSTId
The Result I've got, it was wrong
Then I tried another way to solve this problem, but again I've got another error
second try
SELECT Temp1.*
From (SELECT VidTbl.Id AS Video_Id,
VidTbl.NAME AS Video_Titel_Name,
ActorTbl.NAME AS Actor_Name
FROM ActorInVid
INNER JOIN VidTbl
ON VidTbl.Id = ActorInVid.FKVidId
INNER JOIN ActorTbl
ON ActorTbl.Id = ActorInVid.FKActorId) AS Temp1
SELECT Temp2.*
FROM (SELECT VidTbl.Id AS Video_Id,
SubTitelTbl.NAME AS SubTitel_Langu
FROM SubTitelInVid
INNER JOIN VidTbl
ON VidTbl.Id = SubTitelInVid.FKVidId
INNER JOIN SubTitelTbl
ON SubTitelTbl.Id = SubTitelInVid.FKSTId) AS Temp2
SELECT *
FROM VidTbl
INNER JOIN Temp1
on Temp1.Video_Id = VidTbl.Id
INNER JOIN Temp2
on Temp2.Video_Id = VidTbl.Id
The error, I've got in the last select that was wrong
Thanks a lot for your help any ways
I wish that my question is clear and useful
Thanks again.

You are close. This should work...
SELECT
VidTbl.Name,
ActorTbl.Name,
SubTitelTbl.name
FROM VidTbl
INNER JOIN ActorInVid ON VidTbl.Id = ActorInVid.FKVidId
INNER JOIN ActorTbl ON ActorTbl.Id = ActorInVid.FKActorId
INNER JOIN SubTitelInVid ON VidTbl.Id = SubTitelInVid.FKVidId
INNER JOIN SubTitelTbl ON SubTitelTbl.Id = SubTitelInVid.FKSTId

SELECT DISTINCT vt.Name, at.Name, st.Name
FROM VidTbl vt
JOIN ActionInVid aiv ON aiv.VidId = vt.Id
JOIN SubtitleInVid siv ON siv.VidId = vt.Id
JOIN ActorTbl at ON at.Id = aiv.ActorId
JOIN SubTitleTbl st ON st.Id = siv.STId

How to retrieve count of records in SELECT statement

I am trying to retrieve the right count of records to mitigate an issue I am having. The below query returns 327 records from my database:
SELECT DISTINCT COUNT(at.someid) AS CountOfStudentsInTable FROM tblJobSkillAssessment AS at
INNER JOIN tblJobSkills j ON j.jobskillid = at.skillid
LEFT JOIN tblStudentPersonal sp ON sp.someid2 = at.someid
INNER JOIN tblStudentSchool ss ON ss.monsterid = at.someid
INNER JOIN tblSchools s ON s.schoolid = ss.schoolid
INNER JOIN tblSchoolDistricts sd ON sd.schoolid = s.schoolid
INNER JOIN tblDistricts d ON d.districtid = sd.districtid
INNER JOIN tblCountySchools cs ON cs.schoolid = s.schoolid
INNER JOIN tblCounties cty ON cty.countyid = cs.countyid
INNER JOIN tblRegionUserRegionGroups rurg ON rurg.districtid = d.districtid
INNER JOIN tblGroups g ON g.groupid = rurg.groupid
WHERE ss.graduationyear IN (SELECT Items FROM FN_Split(#gradyears, ',')) AND sp.optin = 'Yes' AND g.groupname = #groupname
Where I run into trouble is trying to reconcile that with the below query. One is for showing just a count of all the particular students the other is showing pertinent information for a set of students as needed but the total needs to be the same and it is not. The below query return 333 students - the reason is because the school the student goes to is in two separate counties and it counts that student twice. I can't figure out how to fix this.
SELECT DISTINCT #TableName AS TableName, d.district AS LocationName, cty.county AS County, COUNT(DISTINCT cc.monsterid) AS CountOfStudents, d.IRN AS IRN FROM tblJobSkillAssessment AS cc
INNER JOIN tblJobSkills AS c ON c.jobskillid = cc.skillid
INNER JOIN tblStudentPersonal sp ON sp.monsterid = cc.monsterid
INNER JOIN tblStudentSchool ss ON ss.monsterid = cc.monsterid
INNER JOIN tblSchools s ON s.schoolid = ss.schoolid
INNER JOIN tblSchoolDistricts sd ON sd.schoolid = s.schoolid
INNER JOIN tblDistricts d ON d.districtid = sd.districtid
INNER JOIN tblCountySchools cs ON cs.schoolid = s.schoolid
INNER JOIN tblCounties cty ON cty.countyid = cs.countyid
INNER JOIN tblRegionUserRegionGroups rurg ON rurg.districtid = d.districtid
INNER JOIN tblGroups g ON g.groupid = rurg.groupid
WHERE ss.graduationyear IN (SELECT Items FROM FN_Split(#gradyears, ',')) AND sp.optin = 'Yes' AND g.groupname = #groupname
GROUP BY cty.county, d.IRN, d.district
ORDER BY LocationName ASC

If you just want the count, then perhaps count(distinct) will solve the problem:
select count(distinct at.someid)
I don't see what at.someid refers to, so perhaps:
select count(distinct cc.monsterid)

Having trouble joining tables

I'm trying to write a query to display the name of each passenger with their fare.
Here's what I have so far -- it gives no errors, but also no results:
-- Write a query to display the Name of each passenger as well as the fare for their trip.
select passenger.name, departure_info.fare * passenger.quantity AS passenger_fare
from passenger, seat_passenger, manages, departure_info, seat_info
where departure_info.Dept_id=manages.Dept_id
AND manages.Seat_id=seat_info.Seat_id
AND seat_info.Seat_id=seat_passenger.Seat_id
AND seat_passenger.Pass_id=passenger.pass_id
Here is the relationship view of the tables http://i.imgur.com/R4EFthY.png

using proper joins syntax will make this query from your query
select
p.name, di.fare * p.quantity as passenger_fare
from passenger as p
inner join seat_passenger as sp on sp.pass_id = p.pass_id
inner join seat_info as si on si.seat_id = sp.seat_id
inner join manages as m on m.seat_id = si.seat_id
inner join departure_info as di on di.dept_it = m.dept_id
I suggest you to turn inner joins into left outer joins and see what you're missing
select
p.name, di.fare * p.quantity as passenger_fare,
sp.pass_id, si.seat_id, m.seat_id, di.dept_id
from passenger as p
left outer join seat_passenger as sp on sp.pass_id = p.pass_id
left outer join seat_info as si on si.seat_id = sp.seat_id
left outer join manages as m on m.seat_id = si.seat_id
left outer join departure_info as di on di.dept_it = m.dept_id
Actually, you could even remove unused joins (if you don't miss some records from seat_info):
select
p.name, di.fare * p.quantity as passenger_fare
from passenger as p
inner join seat_passenger as sp on sp.pass_id = p.pass_id
inner join manages as m on m.seat_id = sp.seat_id
inner join departure_info as di on di.dept_it = m.dept_id

Can you have an INNER JOIN without the ON keyword?

While debugging into some Oracle code, I came across this query:
SELECT TPM_TASK.TASKID FROM TPM_GROUP
INNER JOIN TPM_USERGROUPS ON TPM_GROUP.GROUPID = TPM_USERGROUPS.GROUPID
INNER JOIN TPM_TASK
INNER JOIN TPM_GROUPTASKS ON TPM_TASK.TASKID = TPM_GROUPTASKS.TASKID
INNER JOIN TPM_PROJECTVERSION ON TPM_TASK.PROJECTID = TPM_PROJECTVERSION.PROJECTID AND TPM_TASK.VERSIONID = TPM_PROJECTVERSION.VERSIONID
INNER JOIN TPM_TASKSTAGE ON TPM_TASK.STAGEID = TPM_TASKSTAGE.STAGEID
INNER JOIN TPM_PROJECTSTAGE ON TPM_PROJECTVERSION.STAGEID = TPM_PROJECTSTAGE.STAGEID
ON TPM_GROUP.GROUPID = TPM_GROUPTASKS.GROUPID
I'm confused by the line:
INNER JOIN TPM_TASK
I haven't seen a JOIN without an ON clause before. Also confusing is the line:
ON TPM_GROUP.GROUPID = TPM_GROUPTASKS.GROUPID
This seems like a random ON clause without any matching JOIN. The query runs without any errors, and returns a bunch of data, so obvious the syntax is perfectly valid. Can someone shed some light on exactly what's going on here?

Small universe... I ran across a tool generating this syntax yesterday and was rather flummoxed.
Apparently,
FROM a
INNER JOIN b
INNER JOIN c ON (b.id = c.id)
ON (a.id = c.id)
is equivalent to a nested subquery
FROM a
INNER JOIN (SELECT <<list of columns>>
FROM b
INNER JOIN c ON (b.id=c.id)) c
ON (a.id = c.id)

I think that this is only a problem of ordering your query (since there are only INNER JOINs, the order of them is not really that important). I rearrenged your query and now it looks like this:
SELECT TPM_TASK.TASKID
FROM TPM_GROUP
INNER JOIN TPM_USERGROUPS
ON TPM_GROUP.GROUPID = TPM_USERGROUPS.GROUPID
INNER JOIN TPM_GROUPTASKS
ON TPM_GROUP.GROUPID = TPM_GROUPTASKS.GROUPID
INNER JOIN TPM_TASK
ON TPM_TASK.TASKID = TPM_GROUPTASKS.TASKID
INNER JOIN TPM_PROJECTVERSION
ON TPM_TASK.PROJECTID = TPM_PROJECTVERSION.PROJECTID
AND TPM_TASK.VERSIONID = TPM_PROJECTVERSION.VERSIONID
INNER JOIN TPM_TASKSTAGE
ON TPM_TASK.STAGEID = TPM_TASKSTAGE.STAGEID
INNER JOIN TPM_PROJECTSTAGE
ON TPM_PROJECTVERSION.STAGEID = TPM_PROJECTSTAGE.STAGEID
Does it make more sense to you now?, it does to me.

It'd look fine if it had parenthesis in there...
SELECT TPM_TASK.TASKID
FROM
TPM_GROUP
INNER JOIN TPM_USERGROUPS ON TPM_GROUP.GROUPID = TPM_USERGROUPS.GROUPID
INNER JOIN (
TPM_TASK
INNER JOIN TPM_GROUPTASKS ON TPM_TASK.TASKID = TPM_GROUPTASKS.TASKID
INNER JOIN TPM_PROJECTVERSION ON TPM_TASK.PROJECTID = TPM_PROJECTVERSION.PROJECTID
AND TPM_TASK.VERSIONID = TPM_PROJECTVERSION.VERSIONID
INNER JOIN TPM_TASKSTAGE ON TPM_TASK.STAGEID = TPM_TASKSTAGE.STAGEID
INNER JOIN TPM_PROJECTSTAGE ON TPM_PROJECTVERSION.STAGEID = TPM_PROJECTSTAGE.STAGEID
) ON TPM_GROUP.GROUPID = TPM_GROUPTASKS.GROUPID
but since they are all inner joins I agree with Lamak's answer.