What is the difference between in and exists.
Ex: select * from emp where empno in(....) and
select * from emp where empno exists(....)
What is the difference between a Join and Union and Union
and UnionAll.
how to find the particular row in table?(means suppose one
table contain 10 rows , in these 10 rows how to find the
particular row(example in 10 rows i want 5 row how)?