I have two tables tblPatient, tblDropDowns
tblpatient:
firstname gender patienttype
anil 1 3
Satheesh 1 4
Vinod 1 4
Shashikanth 1 3
Srimani 2 3
Thanuja 2 4
Nandini 2 4
Vishu 2 3
and
tblDropdowns:
id Name
1 Male
2 Female
3 Inpatient
4 Outpatient
Now i want to display the patient table with gender and patient type as their significant names are connected to dropdown table.
result table:
firstname gender patienttype
anil male inpatient
satheesh male outpatient
vinod male outpatient
please help me out..
thanks
anil
In general it would be better avoid storing different things in the same table. However, you could join with subqueries that only contain the relevant records.
SELECT firstname, gender.Name AS gender, patienttype.Name As patienttype
FROM tblPatient p
INNER JOIN (SELECT id, Name
FROM tblDropdowns
WHERE id IN (1, 2)) gender
ON p.gender = gender.id
INNER JOIN (SELECT id, Name
FROM tblDropdowns
WHERE id > 2) patienttype
ON p.patienttype = patienttype.id
Please try out this.
select [column1], [column2] from tblpatient a, tbldropdowns b
where a.gender = b.id order by a.gender;
You could also use joins: Please refer this W3Schools SQL Link.
Hope this helps. Thanks.
Edit
Maybe this query could be your solution:
select a.firstname, b.name as 'gender', b.name as 'PatientType'
from tblpatient a, tbldropdowns b
where a.gender = b.id and a.patienttype = b.id
order by a.gender;
Thanks again. :-)
Try as follows:
SELECT firstname, name, CASE WHEN (patienttype=3) THEN 'inpatient' ELSE 'outpatient' END as patienttype_text from tblpatient INNER JOIN tbldropdowns ON gender = id
join your "tblDropdowns" table twice in your select query.
Please refer this link to understand join,
http://www.w3schools.com/sql/sql_join_left.asp
select tP.firstname,tG.Name gender,tPT.Name patienttype
from tblPatient tP
left join tblDropDowns tG
on tG.id = tP.gender
left join tblDropDowns tPT
on tPT.id = tP.patienttype
Related
Here I have two tables committee_colleges and colleges.
Structure of tables is something like this
committee_colleges
committeeCollegeId collegeId committeeMemberId
1 2 1
2 2 2
3 3 2
I am storing committeeMemberId from committeeMember table.And one college can have multiple committee Members.How can I wite a query to display only the colleges assigned to specific committee Member.
For Example,if committeeMember by id=2 has logged in I want to display colleges by id=2,3.
In college table I have like this,
collegeId typeName
1 AICTE
2 NCTE
3 NTCS
This is Committee Member table
committeeMemberId name
1 xyz
2 abc
Now I am writing something like this,but i know its wrong because I dont know how to take it from College table since I am displaying College details.
SELECT cc.committeeCollegeId as committeeCollegeId,
c.collegeId as collegeId,
cc.committeeMemberId as committeeMemberId
FROM committee_college as cc
left outer join College as c
on cc.collegeId = c.collegeId
where cc.committeeMemberId=:committeeMemberId
order by cc.committeeCollegeId asc
Can anyone tell how to display colleges based on its assignment to particular committeeMember?
You were close, you need INNER JOIN instead of LEFT JOIN:
SELECT DISTINCT C.typeName --<<== put here all the columns that you want in output
FROM committee_colleges CC
INNER JOIN college C
ON C.collegeId = CC.collegeId
WHERE CC.committeeMemberId = 2 --<<== your input parameter
EDIT: added DISTINCT
Hope it helps.
You can use below sql statement for the same
DECLARE #committeeMemberId INT = 2 -- Id of Committee member
;WITH CTE_MemberCommittee AS
(
SELECT CollegeId
FROM committee_colleges
WHERE committeeMemberId = #committeeMemberId
)
SELECT collegeId, typeName
FROM college
WHERE collegeId IN (SELECT CollegeId FROM CTE_MemberCommittee)
You can use simple inner join for that,
If you want collegename based on memberId use following query,
select a.collegeid,a.typeName from
college a, committee_colleges b, committe_member c
where a.collegeid = b.collegeid and
b.committeememberid = c.committeeMemberId
and c.committeeMemberId = '2'
If you want collegename based on committemember name then use following query,
select a.collegeid,a.typeName from
college a, committee_colleges b, committe_member c
where a.collegeid = b.collegeid and
b.committeememberid = c.committeeMemberId
and c.Name = 'xyz'
Hope it will help.
try this:
DECLARE #LoginCommitteeMemberId INT=2
SELECT t2.Name AS MemberName,
t3.TypeName AS CollageName
FROM committee_college t1
INNER JOIN Committee_Member t2
ON t1.committeeMemberId = t2.committeeMemberId
INNER JOIN College as t3
ON t1.collegeId = t3.collegeId
WHERE t1.committeeMemberId = #LoginCommitteeMemberId
I have a SQL table consists of id, name, email,.... I have another SQL table that has id, email, emailstatus but these 2 id are different they are not related. The only thing that is common between these 2 tables are emails.
I would like to join these 2 tables bring all the info from table1 and if the email address from table 1 and table 2 are same and emailstatus is 'Bounced'. But the query that I am writing gives me more record than I expected because there are multiple rows in tbl_webhook(second table) for each row in Applicant(first table) .I want to know if applicant has EVER had an email bounce.
Query without join shows 23000 record but after join shows 42000 record that is because of duplicate how I can keep same 23000 record only add info from second table?
This is my query:
SELECT
A.[Id]
,A.[Application]
,A.[Loan]
,A.[Firstname]
,A.[Lastname]
,A.[Email],
,H.[Email], H.[EmailStatus] as BouncedEmail
FROM Applicant A (NOLOCK)
left outer join [tbl_Webhook] [H] (NOLOCK)
on A.Email = H.Email
and H.[event]='bounced'
this is sample of desired data:
id email name emailFromTable2 emailstatus
1 test2#yahoo.com lili test2#yahoo.com bounced
2 tesere#yahoo.com mike Null Null
3 tedfd2#yahoo.com nik tedfd2#yahoo.com bounced
4 tdfdft2#yahoo.com sam Null Null
5 tedft2#yahoo.com james tedft2#yahoo.com bounced
6 tedft2#yahoo.com San Null
Use a nested select for this type of query. I would write this as:
select id, application, load, firstname, lastname, email,
(case when BouncedEmail is not null then email end) as EmailFromTable2,
BouncedEmail
from (SELECT A.[Id], A.[Application], A.[Loan], A.[Firstname], A.[Lastname], A.[Email],
(case when exists (select 1
from tbl_WebHook h
where A.Email = H.Email and H.[event] = 'bounced'
)
then 'bounced
end) as BouncedEmail
FROM Applicant A (NOLOCK)
) a
You can also do this with cross apply, but because you only really need one column, a correlated subquery also works.
;WITH DistinctEmails
AS
(
SELECT * , rn = ROW_NUMBER() OVER (PARTITION BY [Email] ORDER BY [Email])
FROM [tbl_Webhook]
)
SELECT
A.[Id]
,A.[Application]
,A.[Loan]
,A.[Firstname]
,A.[Lastname]
,A.[Email],
,H.[Email], H.[EmailStatus] as BouncedEmail
FROM Applicant A (NOLOCK) left outer join DistinctEmails [H] (NOLOCK)
on A.Email = H.Email
WHERE H.rn = 1
and H.[event]='bounced'
i believe query below should be enough to select distinct bounced email for you, cheer :)
SELECT
A.[Id]
,A.[Application]
,A.[Loan]
,A.[Firstname]
,A.[Lastname]
,A.[Email],
,H.[Email], H.[EmailStatus] as BouncedEmail
FROM Applicant A (NOLOCK)
Inner join [tbl_Webhook] [H] (NOLOCK)
on A.Email = H.Email
and H.[EmailStatus]='bounced'
basically i just change the joining to inner join and change the 2nd table condition from event to emailstatus, if u can provide your table structure and sample data i believe i can help you up :)
first time asking a question on Stack Overflow... Amazing resource, but there's just one thing that's really baffling me as a newcomer to SQL.
I have three tables and I would like to obtain the names of all the Mentors who are linked to Bob's students.
Table 1: TEACHERS
================
ID Name
================
1 Bob
Table 2: STUDENTS
===================================
STUDENT_ID Name TEACHER_ID
===================================
1 Jayne 1
2 Billy 5
3 Mark 2
Table 3: MENTOR_RELATIONSHIPS
==============================
ID STUDENT_ID MENTOR_ID
==============================
1 1 3
2 2 2
3 3 3
Table 4: MENTORS
=====================
MENTOR_ID Name
=====================
1 Sally
2 Gillian
3 Sean
I would like to run a query to find all of the mentors of Bob's students. So the mentors for all students with TEACHER_ID = 1
In this case Sean would be the result.
I know that it is something to do with Joins, or could I find this using a normal query??
Any help is much appreciated! Many thanks...
this should do the work
select distinct m.name from students s
inner join mentor_ralationships mr on mr.student_id=s.student_id
inner join mentors m on m.mentoir_id=mr.mentor_id
where s.teacher_id=1;
Without joins (not preferred)
SELECT mentors.name FROM mentors
WHERE mentors.id
IN (SELECT MENTOR_RELATIONSHIPS.mentor FROM MENTOR_RELATIONSHIPS
WHERE MENTOR_RELATIONSHIPS.student
IN (SELECT students.id FROM students WHERE students.teacher
= (SELECT teachers.id FROM teachers WHERE teachers.name = 'bob')));
It could be helpful for you as I had to retrieve data from three tables AssignedSubject, Section and SchoolClass when a teacher assigned to specific subject then I have to find out the his class and section details including subjectid which I did this way
select a.StaffID, a.SubjectID, s.ID as SectionId, s.Name as SectionName, S.Remarks as SectionRemarks, sc.ID as ClassId, sc.Name as ClassName, sc.Remarks as ClassRemarks from AssignedSubject a
inner join Section s on a.SectionId=s.ID
inner join SchoolClass sc on sc.ID=s.ClassId where a.StaffID=3068
You could try the following:
SELECT DISTINCT m.name
FROM students s INNER JOIN TEACHERS t ON t.ID = a.TEACHER_ID
INNER JOIN MENTOR_RELATIONSHIPS mr ON mr.Student_id = s.Student_id
INNER JOIN Mentors m ON mr.MENTOR_ID = s.MENTOR_ID
WHERE s.teacher_id = 1 WHERE t.Name = 'Bob';
SELECT TEACHER.NAME, STUDENTS.NAME AS STUDENT NAME, MENTORS.NAME AS MENTOR
FROM TEACHERS JOIN STUDENTS ON TEACHERS.ID = STUDENTS.TEACHER_ID
JOIN MENTOR_RELATIONSHIPS ON STUDENTS.STUDENT_ID =
MENTOR_RELATIONSHIPS.STUDENT_ID
JOIN MENTORS ON MENTOR_RELATIONSHIPS.MENTOR_ID = MENTORS.MENTOR_ID
WHERE TEACHER.NAME = 'Bob' ;
I have a list of people that have their professions listed as the following:
Doctor Male
Teacher Male
Principal Male
Nurse Female
Doctor Male
When I group them by profession, I would like for Access to return 0 for any profession that is not in the sublist I have. Here is the code I am using:
SELECT Profession.Profession, Count(Profession.Profession) AS CountOfProfession
FROM People INNER JOIN Profession ON People.PeopleID = Profession.PeopleID
WHERE (((People.Sex)="Male"))
GROUP BY Profession.Profession;
I would like for it to yield 2 for Doctor since there are 2 males, but also yield 0 for Nurse since there are no male nurses. Please let me know how I can do this, thanks!
You need an outer join. I switched the order of the tables so it is a left join:
SELECT Profession.Profession,
sum(iif(people.sex = "Male", 1, 0)) AS CountOfProfession
FROM Profession LEFT JOIN
ON People.PeopleID = Profession.PeopleID
GROUP BY Profession.Profession;
This can be done with an outer join and moving the condition from the WHERE to the ON clause:
SELECT Profession.Profession,
COUNT(People.PeopleID) AS CountOfProfession
FROM Profession
LEFT JOIN People
ON ( People.PeopleID = Profession.PeopleID
AND People.Sex = 'Male' )
GROUP BY Profession.Profession ;
Say I have 2 tables:
Person
- Id
- Name
PersonAttribute
- Id
- PersonId
- Name
- Value
Further, let's say that each person had 2 attributes (say, gender and age). A sample record would be like this:
Person->Id = 1
Person->Name = 'John Doe'
PersonAttribute->Id = 1
PersonAttribute->PersonId = 1
PersonAttribute->Name = 'Gender'
PersonAttribute->Value = 'Male'
PersonAttribute->Id = 2
PersonAttribute->PersonId = 1
PersonAttribute->Name = 'Age'
PersonAttribute->Value = '30'
Question: how do I query this such that I get a result like this:
'John Doe', 'Male', '30'
SELECT p.name, p1.Value, p2.Value
FROM Person p, PersonAttribute p1, PersonAttribute p2
WHERE p.Id = p1.PersonId AND p.Id = p2.PersonId
AND p1.Name = 'Gender' AND p2.Name = 'Age'
I think you need redesign your schema.
Why not?
Person
- Id
- Name
- Gender
- Birthday
...
SELECT p.Name, g.Value, a.Value
FROM Person p INNER JOIN PersonAttribute g ON p.Id = g.Id AND g.Name = "Gender" INNER JOIN PersonAttribute a ON p.Id = a.Id AND a.Name = "Age"
Storing Name Value pairs does give flexibility but is very cumbersome to query.
Take a look at http://www.simple-talk.com/community/blogs/philfactor/archive/2008/05/29/56525.aspx
Leaving the design aside, you can always PIVOT the result but you need to know how many attributes you are selecting out in advance.
There's no easy way to do this.
The concept of a pivot table (already mentioned by another answer) is basically what you are looking for, except that pivot tables require you to know the names of the columns you wish to use. Clearly this is a problem when you want to exploit the power of such a table design!
In my previous life, I just settled on X number of columns, like 20-30, and if they didn't exist, then the row set included a bunch of null values. No big deal.
select piv.name,
max(case piv.a_name when 'Gender' then piv.a_value else null end) as Gender,
max(case piv.a_name when 'Age' then piv.a_value else null end) as Age,
max(case piv.a_name when 'Hobby' then piv.a_value else null end) as Hobby
from
(select p.name as name, pa.name as a_name, pa.value as a_value
from person p, personattribute pa
where p.id = pa.personid) piv
group by piv.name
This would generate output like so:
name | gender | age | hobby
-----------+--------+-----+---------
Bob Swift | Male | | Reading
John Doe | Male | 30 |
(2 rows)
Which is pretty damned close to what you are looking for. I would leave the rest of it up to your application-layer.
I also highly recommend that you include the attribute NAME as part of the return value, to provide context to the VALUEs.
These types of so-called Entity-Attribute designs often end up having to rely on a combination of server-specific functions, stored procedures, and hard-coded queries.
You need to JOIN the two tables. Wikipedia provides a pretty good explanation of JOIN: http://en.wikipedia.org/wiki/Join_%28SQL%29
SELECT Name, g.Value, a.Value
FROM Person,
PersonAttribute g INNER JOIN ON g.Name = "Gender",
PersonAttribute a INNER JOIN ON a.Name = "Age"