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put count(*) into variable

Posted on 2014-01-23
4
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Last Modified: 2014-01-23
Hello,

When I execute the script :
DECLARE
        num NUMBER;
begin
select count(*) into num from dba.table T1;
select num from dual;
end;
/


ORA-06550: line 5, column 1:
PLS-00428: an INTO clause is expected in this SELECT statement

How can I resolve it?

Thanks
0
Comment
Question by:bibi92
  • 3
4 Comments
 
LVL 73

Expert Comment

by:sdstuber
ID: 39803828
This line puts the value into a variable.

       select count(*) into num from dba.table T1;


This line is illegal, you must put your returned values somewhere
      select num from dual;
0
 
LVL 73

Accepted Solution

by:
sdstuber earned 500 total points
ID: 39803837
I assume you're trying to see value of "num" by doing the second select.  Unless you're in 12c you can't have implicit result sets.

try this...

set serveroutput on
DECLARE
        num NUMBER;
begin
select count(*) into num from dba.table T1;
dbms_output.put_line(num);
end;
/

Open in new window



if viewing the result is not the intent, then please explain what you want to have happen and that will drive how to resolve it.
0
 

Author Comment

by:bibi92
ID: 39803846
This line is illegal, you must put your returned values somewhere : ok, how?
0
 
LVL 73

Expert Comment

by:sdstuber
ID: 39803862
same way you did in the previous line


DECLARE
        num NUMBER;
        num2 NUMBER;
begin
select count(*) into num from dba.table T1;
select num into num2 from dual;
end;
/


however, if you simply want to copy a variable you should not use sql to do it, simply assign the variable directly



DECLARE
        num NUMBER;
        num2 NUMBER;
begin
select count(*) into num from dba.table T1;
num2 := num;
end;
/
0

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