What are the all different types of Joins in SQL Server
2000, Anybody can explain each join with definition..Thanks
in advance....
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Answer Posted / j.jyothy
There are 1.equijoins 2.self joins,3.Crossjoins.
4.Outerjoins->Leftouterjoin,Rightouterjoin,Fullouterjoin.
1.EquiJoins:They are also called innerjoins,In this only
matched rows are displayed to the user.
Example:
select eno,ename,sal,e.deptno,d.deptno,dname,loc from emp e
innerjoin dept d on e.deptno=d.deptno
2.Selfjoin:if the table is joined with table itself.
select distinct (e1.empno),e1.ename,e1.sal from emp e1 join
emp e2 on e1.sal=2* e2.sal(It dispalys emp deatails salary
exactly 2 times with any other emp salary)
| Is This Answer Correct ? | 35 Yes | 11 No |
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