Need a Dynamic SQL statgement that returns multiple values.

Question

Hi,
I'm using Oracle 10.1.0.5.
In an anonymous block I have a dynamic SQL statement that finds the table name and column name that a string value resides in.
It looks like this:
      l_sql := 'SELECT 1 FROM dual WHERE exists (SELECT 1 FROM '||
               r.owner||'.'||r.table_name||' WHERE '||r.column_name||
               ' = :b1)';
         EXECUTE IMMEDIATE l_sql INTO l_res USING l_contents;
         DBMS_OUTPUT.Put_Line(l_contents||' exists in '||r_owner||
                              r.table_name||'.'||r.column_name);I'd then like to do a 'Select Distinct' to list all the other values in that column in the anonymous block,
preferably as another dynamic SQL statement.
How can I do this?

Answer 1

user10382685 wrote:
Hi,
I'm using Oracle 10.1.0.5.
In an anonymous block I have a dynamic SQL statement that finds the table name and column name that a string value resides in.
It looks like this:
l_sql := 'SELECT 1 FROM dual WHERE exists (SELECT 1 FROM '||
r.owner||'.'||r.table_name||' WHERE '||r.column_name||
' = :b1)';
EXECUTE IMMEDIATE l_sql INTO l_res USING l_contents;
DBMS_OUTPUT.Put_Line(l_contents||' exists in '||r_owner||
r.table_name||'.'||r.column_name);I'd then like to do a 'Select Distinct' to list all the other values in that column in the anonymous block,
preferably as another dynamic SQL statement.
How can I do this?Well, it would be nice for you to post the whole context of your present solution so we know what's going on. I'll assume r comes from a loop referencing user_tab_cols or some equivalent view.
If so, you'll likely need to check the DATA_TYPE column.
Keeping in mind, doing something like this is going to be pretty ridiculous if you have a large amount of distinct values ... I'm hoping/assuming this is a one off type of thing.
declare
  type        l_date is table of date;
  v_date      l_date;
  type        l_char is table of varchar2(4000);
  v_char      l_char;
  type        l_numb is table of number;
  v_numb      l_numb;
  l_distinct_ set sys_refcursor;
begin
  <current_code>
  open l_distinct_set for 'select distinct ' || r.column_name || ' from ' || r.owner||'.'||r.table_name;
  --expand on the data types you care about as needed, this is a BASIC set
  if r.data_type = 'DATE'
  then 
    fetch l_distinct_set bulk collect into v_date;
    <process_collection_as_wanted>
  elsif r.data_type in ('VARCHAR2', 'CHAR')
  then
    fetch l_distinct_set bulk collect into v_char;
    <process_collection_as_wanted>
  elsif r.data_type = 'NUMBER'
  then
    fetch l_distinct_set bulk collect into v_numb;
    <process_collection_as_wanted>
  end if;
  close l_distinct_set;