HOW to get the bind variables list.

Question

I've the following problem : I've some SQL queries stored in my DB as VARCHAR2 values.
I need to use DBMS_SQL in order to execute them.
In theese SQL statements I have some bind variables like :NUMORD. (ex. SELECT 'X' FROM YYYY WHERE FIELD_1 = :NUMORD).
I don't know "a priori" names and number of such variables.
Is there any way to have a list of such bind variables ?
I found DBMS_DESCRIBE but is seems to act only on stored procedures/functions.
I know I can tray to inspect the code looking for every ':' but a cleaner solution woulf be appreciated.
Tks
Tullio

Answer 1

I don't know "a priori" names and number of such variables.
Is there any way to have a list of such bind variables ?The names are probably not important, but you can get the count (and other useful information) like this:
SQL> var cur refcursor
SQL> declare
    cl clob;
begin
    dbms_lob.createtemporary (cl, true);
    sys.utl_xml.parsequery (user, 'select e.deptno, :x x from emp e where deptno = :deptno', cl);
    open :cur for select cl cl from dual union all
                  select 'Count binds: ' || xmlquery('count(//BIND_VARIABLE)' passing xmltype(cl) returning content).getclobval() from dual;
    dbms_lob.freetemporary (cl);
end;
PL/SQL procedure successfully completed.
SQL> print cur
CL                                                                             
<QUERY>                                                                        
  <SELECT>                                                                     
    <SELECT_LIST>                                                              
      <SELECT_LIST_ITEM>                                                       
        <COLUMN_REF>                                                           
          <SCHEMA>MICHAEL</SCHEMA>                                             
          <TABLE>EMP</TABLE>                                                   
          <TABLE_ALIAS>E</TABLE_ALIAS>                                         
          <COLUMN>DEPTNO</COLUMN>                                              
        </COLUMN_REF>                                                          
      </SELECT_LIST_ITEM>                                                      
      <SELECT_LIST_ITEM>                                                       
        <BIND_VARIABLE>1</BIND_VARIABLE>                                       
        <COLUMN_ALIAS>X</COLUMN_ALIAS>                                         
      </SELECT_LIST_ITEM>                                                      
    </SELECT_LIST>                                                             
  </SELECT>                                                                    
  <FROM>                                                                       
    <FROM_ITEM>                                                                
      <SCHEMA>MICHAEL</SCHEMA>                                                 
      <TABLE>EMP</TABLE>                                                       
      <TABLE_ALIAS>E</TABLE_ALIAS>                                             
    </FROM_ITEM>                                                               
  </FROM>                                                                      
  <WHERE>                                                                      
    <EQ>                                                                       
      <COLUMN_REF>                                                             
        <SCHEMA>MICHAEL</SCHEMA>                                               
        <TABLE>EMP</TABLE>                                                     
        <COLUMN>DEPTNO</COLUMN>                                                
      </COLUMN_REF>                                                            
      <BIND_VARIABLE>2</BIND_VARIABLE>                                         
    </EQ>                                                                      
  </WHERE>                                                                     
</QUERY>                                                                       
Count binds: 2                                                                 
2 rows selected.