Cursor with a where clause - sql

Question

I am trying to use a cursor with a where clause. It shouldnt be much different from the simple cursor I assume. I tried the following in my case but doesnt seem to print any output.
Declare
BG_TOTAL number;
SDO_GEOM varchar2 ;
cursor c1 is
select
SDO_GEOM.SDO_AREA(GEOMETRY, 0.005,'unit = SQ_MILE')
from <tablename>
where SITE_ID= 8;
Type SITE_TAB_TYPE is table of c1%ROWTYPE;
SITE_LIST SITE_TAB_TYPE;
Begin
open c1;
FETCH c1 BULK COLLECT INTO SITE_LIST;
close c1;
DBMS_OUTPUT.PUT_LINE(SITE_LIST(1).SDO_GEOM);
Exception
When others then
DBMS_OUTPUT.PUT_LINE(sqlerrm);
End;
[Error] Execution (3: 11): ORA-06550: line 3, column 11:
PLS-00215: String length constraints must be in range (1 .. 32767)
ORA-06550: line 7, column 5:
PLS-00487: Invalid reference to variable 'SDO_GEOM'
ORA-06550: line 7, column 5:
PLS-00487: Invalid reference to variable 'SDO_GEOM'
ORA-06550: line 22, column 40:
PLS-00302: component 'SDO_GEOM' must be declared
ORA-06550: line 22, column 6:
PL/SQL: Statement ignored

Answer 1

The problem is that you are trying to output the whole table object to standard output, whereas you should iterate through it. Instead of:
DBMS_OUTPUT.PUT_LINE(SITE_LIST.SDO_GEOM);
Use something like this:
FOR v_i IN 1..SITE_LIST.LAST
LOOP
dbms_output.put_line(SITE_LIST(v_i).SOME_COLUMN_NAME);
END LOOP;
Replace the SOME_COLUMN_NAME with a name of a column selected in your cursor.
Edit
You have to provide an index of the element of your collection to which you want to refer to:
dbms_output.put_line(site_list(1).SDO_GEOM);
Edit #2
Yes.. you didn't specify column alias for value selected in your query. Try this cursor instead:
cursor c1 is
select
SDO_GEOM.SDO_AREA(GEOMETRY, 0.005,'unit = SQ_MILE') AS my_value
from <tablename>
where SITE_ID= 8;
And then:
dbms_output.put_line(site_list(1).my_value);