Answer / amit das

1.Equi join
2.Natural Join
3.cartegian/cross/non-equi join
4.outer join(+)>>a)left outer join
b)right outer join
5.self join

Answer / mathan kumar

Two Type of Joins are there
1) Inner Join
2) Outer Join
In Inner join has 3 types they are as follows
a)Equi join
b)Cross Join
c)Natural Join
In Outer join has 3 types they are as follows
a)Left Outer Join
b)Right Outer Join
c)Full Outer Join

Answer / sreekanth

Basically there are 5 types of joins, they are

1.Equi join
2.Non-equi join
3.cartegian join
4.outer join(+)>>a)left outer join
b)right outer join
5.self join

Answer / t.rajesh gupta

Different types of joins are 1.self join, 2. Equi join, 3.
non-equi join 4. cross join

Answer / amar misra

1-Inner Join
2-Outer Join
3-Left Join
4-Right Join
5-Self Join

Hi Guys, I have a situation where I need to access the column values from rowtype variable. However, the column names are dynamic. below is sample code: declare Cursor c1 is select * from emp; Cursor c2 is select column_name from xyztable; v_c2 c2%rowtype; v_str varchar2 v_value varchar2(200); begin for rec in c1 loop open c2;---this cursor has column names like EMPLOYEE_ID, FIRST_NAME, LAST_NAME etc. loop fetch c2 into v_c2; exit when c2%notfound; /* now lets say i want to access value of LAST_NAME from cursor c1, so I am writing below code, however it does not work as expected */ v_str:= 'rec.'|| v_c2.column_name; -- this will give me string like "rec.EMPLOYEE_ID" v_value:=v_str; end loop; end loop; end; / Plz help ASAP.Thanks.

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