Merging two tables based on id

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facing problem in appending table1 with the columns of table2

Table User (id, name, Gender)
Table Qualification(id, name)
many to many relationship

Lets Say User Table is as Below
id, name, gender
1, john, male
2, smith, male
3,catherine, female

Qualification Table
User_id, Degree
1, Msc
1,BSC
3,Msc

What i want is.. to get a resultant table as

id, name, gender, Degree
1,john,male,Msc
1,john,male,Msc
2,smith,male,null/or remains empty
3,catherine,female,Msc

What I have tried:

i've tried
Select u.id, u.name, u.gender, q.degree
FROM user as u
INNER JOIN qualification as q
ON u.id=q.User_id

I know em doing it wrong way.. :( but couldn't find any solution

Posted 5-Mar-16 4:26am

KanwalT

Updated 5-Mar-16 5:13am

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2 solutions

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CHill60 · Accepted Answer · 2016-03-05T04:39:00

Solution 1

Change from INNER JOIN to LEFT OUTER JOIN

[EDIT]
You may find this article useful Visual Representation of SQL Joins[^]

And as an aside avoid using reserved words as table names or column names and if you really must then surround them with square brackets e.g. [user]

Posted 5-Mar-16 4:39am

CHill60

Updated 5-Mar-16 4:42am

v2

Simon_Whale · Accepted Answer · 2016-03-05T05:13:00

Solution 2

you'd have to change the order of query also as well as the type of join

SQL

select *
from qualifications a left outer join [user] b
on a.user_id = b.id
where b.id is not null

Posted 5-Mar-16 5:13am

Simon_Whale

Updated 5-Mar-16 5:18am

v3

Comments

CHill60 5-Mar-16 11:21am

That does not produce the results that the OP said they wanted. They specifically want the row where qualification is null, therefore the tables were in the right order and the Where clause (check your spelling) is not required