joins, Sql Server - rextester

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Create table location ( locationid int , regionalgroup varchar(20));
insert into location( locationid , regionalgroup )
values ( 122, 'banglore'),
(123 , 'delhi'),
(124, 'noida'),
(125, 'meerut'),
(126, 'gzb');
select * from location;

create table dept( deptid int, name varchar(30), locationid int );
insert into dept( deptid, name , locationid )
values( 10, 'tarun', 122),
(20, 'harsh', 123),
(30, 'popu', 124),
(40, 'shubham', 127),
(50, 'nitesh', 128);
select * from dept;

create table job ( name varchar(20),jobid int , post varchar(20));
insert into job (name, jobid , post)
values ('tarun', 666, 'clerk'),
('harsh', 667, 'hr'),
('popu', 668, 'analyst'),
('shubham', 669, 'senior manager'),
('nitesh', 670, ' associate analyst');
select * from job;

/*select location.regionalgroup,dept.name,dept.locationid,job.post from location inner join dept on location.locationid=dept.locationid inner join job on dept.name=job.name;
select dept.deptid,dept.name,job.post,location.regionalgroup from location inner join dept on location.locationid=dept.locationid inner join job on dept.name=job.name where job.name='shubham';
select dept.deptid,dept.name,job.post,location.regionalgroup from location inner join dept on location.locationid=dept.locationid inner join job on dept.name=job.name where dept.name='tarun';
select location.regionalgroup,dept.name,dept.deptid from location left join dept on location.locationid=dept.locationid;
select location.locationid,location.regionalgroup, dept.deptid,dept.name,dept.locationid from location left join dept on location.locationid=dept.deptid;
select dept.deptid,dept.name,dept.locationid,job.name,job.jobid,job.post from dept left join job on dept.name=job.name;*/
select location.locationid,location.regionalgroup,dept.deptid,dept.name,dept.locationid from location left join dept on location.locationid=dept.locationid;
select location.locationid,location.regionalgroup,dept.deptid,dept.name,dept.locationid from location right join dept on location.locationid=dept.locationid;

View schema
Execution time: 0,03 sec, rows selected: 25, rows affected: 15, absolute service time: 0,23 sec, absolute service time: 0,23 sec