Answer / vikas gupta

Declare
l_deptname dept.deptname%Type;
l_ename dept.ename%type;
Begin
select deptname,ename
into l_deptname,l_ename
from dept
where dept_no = 30;

if sql%notfound then
dbms_output.put_line("Record was not Found")
else
dbms_output.put_line("Deptname=" l_deptname);
dbms_output.put_line("Ename=" l_ename);
end if;

end;

Answer / debasis mohanty

If That dept 30 contains more than 1 employee then your answer is wrong
erorr:exact fetch returns more than 1 rows

Answer / swastik

declare
v_deptno number(2) := &gdeptno;
v_dname varchar2(20);
v_ename   varchar2(20);
begin
select deptno, dname, ename into v_deptno, v_dname, v_ename 
from dept
where deptno = v_deptno;
dbms_output.put_line(v_deptno|| ' '||v_dname||' '||v_ename);
exception
when no_data_found
then
dbms_output.put_line('record was not found');
end;
/

Answer / dmddebasismohanty183

Please Send Me The Answer





Thanks And Regards
Debasis Mohanty
dmdebasismohanty183@gmail.com
Contact:08722140827

Answer / xyz

declare
cursor mycursor is
select dname,ename from emp ,dept where emp.deptno=dept.deptno and dept.deptno=30;
v_dname dept.dname%type;
v_ename emp.ename%type;
begin
open mycursor;
loop
exit when mycursor%notfound;
fetch mycursor into v_dname,v_ename;
exception
when no_data_found then
dbms_output.put_line(v_dname||' '||v_ename);
end loop;
close mycursor;
end;

What is the use of count (*) in sql?

0 Answers  

Hi, I am new in oracle(SQL), could anyone help me in writing a correct SQL. Below is the table structure. Table: Subsc Fields: 1. Sub_no (this field will hold values of subscriber nos, for e.g. S111111, S222222, S333333, S444444, etc.) 2. s_status (this field will hold values for different status of subscriber, for e.g. 'A', 'S', 'C', etc.) 3. cus_id (this field will hold values of bill nos for e.g. 11111111, 22222222, 33333333, 44444444, etc.) Table: Bill Fields: 1. Bill_no this field will hold values of bill nos for e.g. 11111111, 22222222, 33333333, 44444444, etc.) 2. b_status = (this field will hold values for different status of bill for e.g. 'O', 'C', 'S', etc.) Note: 1. The Sub_no is a Primary key of Subsc table. 2. The cus_id is a foreign in Subsc table (referred from Bill_no field of Bill table) 3. The Bill_no field is the Primary key of Bill table. Query A --> I wrote a query to select cus_id/Bill_no which is in status open (b_status = 'O') and having more than two active subscriber (i.e. S_status = 'A') in it ( i.e. more the two subscribers in same bill). select s.cus_id from subsc s where exists (select 1 from bill where bill_no = s.cus_id and b_status = 'O') and s_status = 'A' group by s.cus_id having count(sub_no) = 2 Problem : The above query will give the cus_id (or rather bill_no) which are in open status (b_status ='O) and which are having TWO ACTIVE Subscribers (s_status ='A') in it. However, this query will also lists the cus_id/bill_no which are having more than TWO subscribers in it (but only two subscriber will be in Active status (s_status = 'A') and the others will be in s_status = 'C' or s_status = 'S'. Help needed: I want to write a query which will fetch ONLY the cus_id/bill_no which are in open status (b_status ='O') and which are having ONLY TWO ACTIVE subscribers (s_status ='A') in it. B--> If I include the sub_no in the above query then NO row are returned. select s.cus_id, s.sub_no from subsc s where exists (select 1 from bill where bill_no = s.cus_id and b_status = 'O') and s_status = 'A' group by s.cus_id, s.sub_no having count(sub_no) = 2 Help needed: I want to modify the above query which will fetch ONLY the cus_id/bill_no which are in open status (b_status ='O') and which are having ONLY TWO ACTIVE subscribers (s_status ='A') in it ALONG with the sub_no. Thanks a lot in advance. Regards, Nitin

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