I've got this tables:
users {id = int, name = varchar, pwd = char}
company {id = int, token = char, name = varchar}
user_company {id = int, id_usr = int, id_company = int, name_usr = varchar}
I'm trying to get the pwd from users and find out if the user is in the company with the token X from user_company
When I use this query
SELECT u.pwd,h.name_usr
FROM users u, company c
LEFT JOIN users_company h ON c.id = h.id_company AND u.id = h.id_usr
WHERE u.user_name = 'user#domain.com'
AND c.token = 'f30ea71e7a9d9f0a6710bb46537c0bde'
LIMIT 1;
I keep on getting 'Unknown column u.id in on clause' although u.id exists. What am I doing wrong? Thanks
SELECT u.pwd,h.nombre_usr
FROM company c LEFT JOIN users_company h ON c.id = h.id_company
LeFt join users u on u.id = h.id_usr
WHERE u.user_name = 'user#domain.com'
AND c.token = 'f30ea71e7a9d9f0a6710bb46537c0bde'
LIMIT 1;
The Error was beacause of Join Query . The way it was written is wrong. We can not apply join two tables with single table at same time.
sI've got the solution. Thank you all for the help.
SELECT u.pwd,h.name_usr
FROM users u
LEFT JOIN company c ON c.token = 'f30ea71e7a9d9f0a6710bb46537c0bde'
LEFT JOIN users_company h ON c.id = h.id_company AND u.id = h.id_usr
WHERE u.user_name = 'user#domain.com'
LIMIT 1;
Related
SELECT DISTINCT
,PH.PHONE_TYPE_CD
,PH.PHONE_NUM
FROM PERSON P
LEFT JOIN PHONE PH
ON PH.PARENT_ENTITY_ID = P.PERSON_ID
AND PH.PARENT_ENTITY_NAME = 'PERSON'
AND PH.PHONE_TYPE_CD = ?
AND PH.ACTIVE_IND = 1
LEFT JOIN PHONE PH
ON PH.PARENT_ENTITY_ID = P.PERSON_ID
AND PH.PARENT_ENTITY_NAME = 'PERSON'
AND PH.PHONE_TYPE_CD = ?
AND PH.ACTIVE_IND = 1
LEFT JOIN PHONE PH
ON PH.PARENT_ENTITY_ID = P.PERSON_ID
AND PH.PARENT_ENTITY_NAME = 'PERSON'
AND PH.PHONE_TYPE_CD = ?
AND PH.ACTIVE_IND = 1
Here PHONE_TYPE_CD will be passed from the Java side and based on the PHONE_TYPE_CD, the query should run and return results.
Since I am new to SQL, I am not sure how to achieve this. I understand all the 3 joins should have aliases like PHONE PH1, PHONE PH2 and so on.. My question is can I code like below and get the PHONE_NUM based on the passed PHONE_TYPE_CD:
SELECT DISTINCT
,PH1.PHONE_TYPE_CD
,PH1.PHONE_NUM
,PH2.PHONE_TYPE_CD
,PH2.PHONE_NUM
,PH3.PHONE_TYPE_CD
,PH3.PHONE_NUM
FROM PERSON P
LEFT JOIN PHONE PH1
ON PH1.PARENT_ENTITY_ID = P.PERSON_ID
AND PH1.PARENT_ENTITY_NAME = 'PERSON'
AND PH1.PHONE_TYPE_CD = ?
AND PH1.ACTIVE_IND = 1
LEFT JOIN PHONE PH2
ON PH2.PARENT_ENTITY_ID = P.PERSON_ID
AND PH2.PARENT_ENTITY_NAME = 'PERSON'
AND PH2.PHONE_TYPE_CD = ?
AND PH2.ACTIVE_IND = 1
LEFT JOIN PHONE PH3
ON PH3.PARENT_ENTITY_ID = P.PERSON_ID
AND PH3.PARENT_ENTITY_NAME = 'PERSON'
AND PH3.PHONE_TYPE_CD = ?
AND PH.ACTIVE_IND = 1
I have ambiguity regarding the retrieval part.
You can do this:
SELECT DISTINCT
,PH1.PHONE_TYPE_CD
,PH1.PHONE_NUM
,PH2.PHONE_TYPE_CD
,PH2.PHONE_NUM
,PH3.PHONE_TYPE_CD
,PH3.PHONE_NUM
FROM PERSON P
LEFT JOIN PHONE PH1
ON PH1.PARENT_ENTITY_ID = P.PERSON_ID
AND PH1.PARENT_ENTITY_NAME = 'PERSON'
AND PH1.PHONE_TYPE_CD in (type1, type2, type3)
AND PH1.ACTIVE_IND = 1
I have the following query I am trying to join 2 tables (' Industry' , 'Country' ) on 2 conditions, but it gives me the following error
Error Code: 1054. Unknown column 'i.id' in 'on clause'
Does anybody know how should I tackle this?
SELECT c.name AS country_name, i.name as industry_name, num_projects, num_consultants, admin_rating
FROM industry i, country c
JOIN (SELECT pc.country_id, pi.industry_id, COUNT(p.id) AS num_projects
FROM project p, project_country pc, project_industry pi
where p.id = pc.project_id and pi.project_id=p.id
GROUP BY pc.country_id,pi.industry_id) x ON x.country_id = c.id and x.industry_id=i.id
JOIN (SELECT u.country_id,ie.industry_id, COUNT(u.id) AS num_consultants
FROM user u, consultant_profile, industry_experience ie
WHERE u.is_active = 1 AND u.type = 0 and
ie.consultant_profile_id= consultant_profile.id
and u.id= consultant_profile.id
GROUP BY u.country_id,ie.industry_id) y ON y.country_id = c.id and y.industry_id = i.id order by num_projects DESC limit 20;
EDIT the table structure is as following:
industry - id
project_industry - industry_id, project_id
industry_experience - consultant_profile_id, industry_id
consultant_profile - id,user_id
Since you still did not provide any sql fiddle
you can start from my one:
http://sqlfiddle.com/#!9/6c0569/1
SELECT pc.country_id, pi.industry_id,
COUNT(p.id) AS num_projects,
COUNT(u.id) AS num_consultants
FROM project p
INNER JOIN project_country pc
ON p.id = pc.project_id
INNER JOIN project_industry pi
ON pi.project_id=p.id
INNER JOIN `user` u
ON u.is_active = 1 AND u.type = 0
and u.country_id = pc.country_id
INNER JOIN industry_experience ie
ON u.id = ie.consultant_profile_id
AND ie.industry_id = pi.industry_id
GROUP BY pc.country_id, pi.industry_id
if you will add some data into that fiddle we can discuss deeper
Hello I want to bind this to one query with JOIN.
How does this work:
Db::bind("uid", strip_tags($userid));
DB::bind("user_id", strip_tags($refer));
Db::bind("points_earn", strip_tags($points_earn));
Db::bind("points_refer", strip_tags($points_refer));
Db::query("UPDATE referrals SET `points_earn` = :points_earn WHERE new_id = :uid");
Db::query("UPDATE users SET `points` = `points` + :points_refer WHERE id = :user_id");
What I think but not work.
Db::query("UPDATE referrals r JOIN users u ON r.user_id = u.id SET `r.points_earn` = :points_earn WHERE r.new_id = :uid AND `u.points` = `u.points` + :points_refer WHERE u.id = :user_id");
Have anyone a solution?
Your syntax is right, but the back ticks are wrong and each SELECT only has one WHERE:
UPDATE referrals r JOIN
users u
ON r.user_id = u.id
SET r.points_earn = :points_earn
WHERE r.new_id = :uid AND u.points = u.points + :points_refer AND
u.id = :user_id;
The problem with backticks is that the following are quite different:
`r.points_earn`
`r`.`points_earn`
The first refers to a column called "r.points_earn". The second refers to the "points_earn" column in "r". The backticks aren't necessary so you can just remove them.
I'm working on a small social network service.
Very classically, I have 3 tables :
- table "circles_users" : all users that belong to the same "circle"
- table "friends" : friendship relation between users
- table "checkin" : is a user "checkin" somewhere or not
Here the structure of the database : http://sqlfiddle.com/#!2/27888/1
I would like to ask my database to give me :
all users from a specific "circle" with for each of them :
- the number of friends this user has in common with user id = 3
- if this user is checkin or not
Here what I'm trying to do :
SELECT a.uid,
(
SELECT COUNT(*)
FROM (SELECT IF (uid1 = 3, uid2, uid1) AS cf FROM friends WHERE (friends.uid1 = 3 OR friends.uid2 = 3 )) as b
JOIN friends ON ((friends.uid1 = b.cf AND friends.uid2 = a.uid) OR (friends.uid1 = a.uid AND friends.uid2 = b.cf))
) as common_friends,
checkin.status as checkin_status
FROM
(SELECT circles_users.uid FROM circles_users WHERE circles_users.circlename = 'circle_A') as a
LEFT JOIN checkin ON checkin.uid = a.uid
I get this error message : Unknown column 'a.uid' in 'on clause'
It has been now 2 days that I'm trying to fix this unsuccessfully.
It seems that it is not possible to reference correlation name in my subquery.
For instance, if I replace a.uid in the subquery by a specific uid (for instance let's say '4'), I don't get any error. But of course, the result is false...
Is there someone who could help me ?
That would be very nice :)
OTHER OPTION TO FOLLOW ?
Another option would be to pass the "common_friends" subquery as a join.
I tried to do something like this :
SELECT a.uid,
c.cnt as common_friends,
checkin.status as checkin_status
FROM
(SELECT circles_users.uid as uid FROM circles_users WHERE circles_users.circlename = 'circle_A') as a
LEFT JOIN
(
SELECT DISTINCT COUNT(*) as cnt
FROM (SELECT IF (uid1 = 3, uid2, uid1) AS cf FROM friends WHERE (friends.uid1 = 3 OR friends.uid2 = 3 )) as b
JOIN friends ON ((friends.uid1 = b.cf AND friends.uid2 = a.uid) OR (friends.uid1 = a.uid AND friends.uid2 = b.cf))
) as c ON 1=1
LEFT JOIN checkin ON checkin.uid = a.uid
But again : I get this error message : Unknown column 'a.uid' in 'on clause'Anyway, do you think this version would be easier to handle and would open new possibilities to resolve my problem ?
If you want to play with my queries : (thanks to #zundarz)
http://sqlfiddle.com/#!2/27888/1
Rewrote a query based on the info you give and what you are looking for.
SELECT cu.uid, COUNT(f.uid1) common_friends, c.status
FROM circles_users cu
LEFT JOIN friends f
ON (f.uid1 = cu.uid OR f.uid2 = cu.uid)
AND f.status = "on"
AND IF (f.uid1 = cu.uid, f.uid2, f.uid1) IN (
SELECT IF (uid1 = 3, uid2, uid1)
FROM friends
WHERE status = "on"
AND (friends.uid1 = 3 OR friends.uid2 = 3)
)
LEFT JOIN checkin c
ON c.uid = cu.uid AND c.status = "on"
WHERE cu.circlename = "circle_A"
GROUP BY cu.uid
Example sqlFiddle
I need to convert this sql query to linq to sql and the result returns a IEnumerable:
select VisualAidName, v.VisualAidID, vs.VisualAidStatusName,
br.BrandName, v.IsEnabled, v.VisualAidCode, v.DateApproved,
br.BrandID, type, UserFirstName+ ' ' + UserLastName as name, AreaID
from VisualAids v inner join VisualAidStatus vs
on v.VisualAidStatusId = vs.VisualAidStatusId
inner join brands br
on v.BrandID = br.BrandId
inner join VisualAids_Areas_Link vareas
on v.VisualAidID = vareas.VisualAidID
left join users us
on v.Owner = us.UserID
where
AreaID IN (
select areaid
from Users inner join Users_Area_Link
on Users.UserID = Users_Area_Link.UserID
where Users.UserID= 3
)
I did this:
IEnumerable<Visual_Aid> visualAll = from v in Context.VisualAids
join vs in Context.VisualAidStatus on v.VisualAidStatusId equals vs.VisualAidStatusId
join br in Context.Brands on v.BrandID equals br.BrandId
join us in Context.Users on v.Owner equals us.UserID into vadis
from x in vadis.DefaultIfEmpty()
select new Visual_Aid()
{
VisualAid_Name = v.VisualAidName,
VisualAid_Id = v.VisualAidID,
VisualAid_StatusName = vs.VisualAidStatusName,
VisualAid_BrandsName = br.BrandName,
VisualAid_IsEnabled = bool.Parse(v.IsEnabled.ToString()),
VisualAid_Code = v.VisualAidCode,
VisualAid_DateApp = v.DateApproved.ToString() ?? "",
VisualAid_BrandId = int.Parse(v.BrandID.ToString()),
VisualAid_Type = v.Type,
VisualAid_Owner = x.UserID == null ? "" : x.UserFirstName + " " + x.UserLastName
};
but I need to do the part of the subquery, ie, I need to include this:
where AreaID IN (
select areaid from Users inner join Users_Area_Link
on Users.UserID = Users_Area_Link.UserID where Users.UserID= 3
)
Anybody know how? thank you very much in advance
You can add this as a where statement:
.......
join us in Context.Users on v.Owner equals us.UserID into vadis
from x in vadis.DefaultIfEmpty()
where (
from user in Context.Users
join userArea in Users_Area_Link
on user.UserID equals userArea.UserID
where user.UserID==3
select userArea.areaid
).Contains(????.AreaID)
select new Visual_Aid()
{
.......