How to use anonymous block in select statement

Question

Hello Experts.
I have one requirement which i can resolve using anonymous block in plsql. But i want implement it in select query only.
Database: Oracle 11.2.0
select count(*) from emp where name='xyz' and sal=50
if count(*)>0
then
select dept,sector from emp where name='xyz' and sal=50
here i dont have any primary key.
How can i achieve above using sql query not plsql. Here is one sloution which i have got but its not satisfying above requiremnt as i dont have any primary key columns
select toll_number from toll_details
where toll_id =(select toll_id from toll_details where toll_new_id='5263655214' group by toll_id having count(*)>0)
here toll_id is primary key, so used group by. But how to do this in my above requirement as i dont have primary key.
Appreciate any help on this.
Thank you

Answer 1

897112 wrote:
Hello Experts.
I have one requirement which i can resolve using anonymous block in plsql. But i want implement it in select query only.
Database: Oracle 11.2.0
select count(*) from emp where name='xyz' and sal=50
if count(*)>0
then
select dept,sector from emp where name='xyz' and sal=50
here i dont have any primary key.
How can i achieve above using sql query not plsql. Here is one sloution which i have got but its not satisfying above requiremnt as i dont have any primary key columns
select toll_number from toll_details
where toll_id =(select toll_id from toll_details where toll_new_id='5263655214' group by toll_id having count(*)>0)
here toll_id is primary key, so used group by. But how to do this in my above requirement as i dont have primary key.
Appreciate any help on this.
Thank youTry this
SQL> create table plch_test(id number,name varchar2(20),sal number);
Table created.
SQL> insert into plch_test values(1,'XYZ',50);
1 row created.
SQL> insert into plch_test values(2,'AAA',100);
1 row created.
SQL> insert into plch_test values(3,'BBB',200);
1 row created.
SQL> insert into plch_test values(4,'CCC',400);
1 row created.
SQL> commit;
Commit complete.
SQL> select * from plch_test;
        ID NAME                        SAL
         1 XYZ                          50
         2 AAA                         100
         3 BBB                         200
         4 CCC                         400
SQL> ed
Wrote file afiedt.buf
  1  select id,name
  2  from plch_test a
  3  where 1=(select count(*) from plch_test b where a.id=b.id)
  4* and id=&id
SQL> /
Enter value for id: 2
old   4: and id=&id
new   4: and id=2
        ID NAME
         2 AAA
SQL> /
Enter value for id: 0
old   4: and id=&id
new   4: and id=0
no rows selectedHope this helps!!!
Regards,
Achyut