How to get branch id and with out branch id ouput

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I have first table as follows

Branchid BranchName

1 A
2 B
3 C
4 D
5 E

I have Second table as follows

Empid Empname Branchid

1 Ram 1
2 Suresh 2
3 Vinay 1
4 Rahul -
5 Sam 3

i want to get output of combine the above two tables branch id. for which one branch id is there and branch id is not there

for that how to write the query

What I have tried:

 I have first table as follows


  Branchid         BranchName

    1                A
    2                B
    3                C
    4                D
    5                E


I have Second table as follows


 Empid    Empname     Branchid
 
   1        Ram          1
   2        Suresh       2
   3        Vinay        1
   4        Rahul        -
   5        Sam          3
   

i want to get output of combine the above two tables branch id. for which one branch id is there  and branch id is not there

for that how to write the query

Posted 12-Mar-17 6:03am

sudhakarthikeyan

Updated 12-Mar-17 9:12am

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Michael_Davies 12-Mar-17 12:27pm

In the second table where there is no Branchid is it Null or do you put the dash in when no branch?

3 solutions

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Peter Leow · Answer 1 · 2017-03-12T06:28:00

Use the appropriate SQL Joins[^] to achieve your objective, e.g.

select b.branchid, b.branchname, e.empid, e.empname from branchtable b right join emptable e on
b.branchid = e.branchid

will give you

branchid	branchname	empid	empname
1		      A		     1	    Ram
2		      B		     2	    Suresh
1		      A		     3	    Vinay
NULL		  NULL	     4	    Rahul
3		      C		     5	    Sam

CHill60 · Answer 2 · 2017-03-12T06:28:00

Solution 2

Select information from your second table joined to your first. A left outer join would be appropriate.
See
Visual Representation of SQL Joins[^]

You might also find the ISNULL function useful

Posted 12-Mar-17 6:28am

CHill60

Member 12863357 · Answer 3 · 2017-03-12T09:12:00

Solution 3

--------------for first----------------
select e.branchid as branchid,b.branchname,e.empid,e.empname from branch b
join empp e on b.branchid=e.branchid

--------for second-----------
select b.branchid as branchid,b.branchname,e.empid,e.empname,e.branchid as brancid from branch b
left join empp e on b.branchid=e.branchid where empid is null

Posted 12-Mar-17 9:12am

Member 12863357

Comments

CHill60 13-Mar-17 4:40am

Your second query does not do what you say it does. It actually lists branchs that have no employees - which is not what the OP wanted.