Having trouble with variables in oracle sql developer

Question

I want to mention that I'm new using sql developer and I'm trying to fill a temporary table with two values that are found in two variables, but i'm not able to get it right. I'm hoping that maybe one of you guys could have a better idea. This is what I've tried:

DECLARE
     x NUMBER;
     y NUMBER;
BEGIN
EXEC SELECT COUNT(*) INTO :x FROM (select * from view2 where restituita=1);
EXEC SELECT COUNT(*) INTO :y FROM (select * from view2 where restituita=0);
create global temporary table dateRest (rest number,nerest number);
insert into dateRest values(x,y);
select * from dateRest;
END;

Answer 1

Based on the final results, the query is over complicated -- it only needs to be:

SELECT SUM(CASE WHEN restituita = 1 THEN 1 ELSE 0 END),
       SUM(CASE WHEN restituita = 0 THEN 1 ELSE 0 END)
  FROM view2;

• EXEC is TSQL syntax -- EXECUTE is PLSQL/Oracle syntax, but neither is necessary
• The colon indicates a bind variable, which is used for supplying a value to a query -- not for retrieving one
• the creation of the global temp table needs to be run as dynamic SQL when in a stored procedure or anonymous block -- really don't recommend the use of temp tables if at all possible. But the temp table wouldn't be visible for the insertion, much less selection from

Answer 2

I'm afraid you have more errors and problems than lines in your piece of code. It's a mixup of SQL statements, PL/SQL, and variable binding of other languages.

Since you use a declare/begin/end block, you're in the PL/SQL world. In the PL/SQL world:

• You cannot use EXEC , because it's a short hand for begin/end if you're not in PL/SQL.
• You don't need to use colons for variable binding
• You cannot execute a SELECT statement without putting the result somewhere
• You cannot execute DDL statements (CREATE TABLE...) directly.
• You usually cannot refer to tables that do not exist when the begin/end block is started.

And don't forget to commit.

So the solution probably is: don't use PL/SQL.

create global temporary table dateRest (rest number,nerest number);
insert into dateRest(x, y)
  select (select count(*) from view2 where restituita=1),
    (select count(*) from view2 where restituita=0)
  from dual;
commit;

Answer 3

You should lose the : for parameters within (anonymous) procedures.

[edit]

No, I'm wrong. The : are not needed when you don't use EXEC. I think your problem lies in creating the table. This is not possible in this way, because PLSQL doesn't support the CREATE TABLE statement. You should use:

EXECUTE IMMEDIATE 'CREATE TABLE ....';

Answer 4

The corrected OMG anonymous block would be:

DECLARE
   var1 Number;
   var2 Number;
BEGIN
SELECT SUM(CASE WHEN restituita = 1 THEN 1 ELSE 0 END),
     SUM(CASE WHEN restituita = 0 THEN 1 ELSE 0 END)
   INTO var1, var2
FROM view2;

END;