Select column from user.table

Question

Hi,
I have 100 users. Each one has same table let's say tableA. I want a query that return back the value of a given column in that table for all users with their names. I thought about a join between dba_users (username) and that table. Basically I generate a script by this :
select 'SELECT CULOMN FROM '||owner||'.'||TABLE_NAME||';' from all_tables where table_name='TABLEA';
I execute the result script as sysdba.
But when executed it does not show the name of each user. I mean we can not see which value belongs to whom.
How can I do that ?
many thanks before.
Message was edited by:
user522961

Answer 1

Or perhaps you just want some dynamic SQL like this:
SQL> ed
Wrote file afiedt.buf
  1  DECLARE
  2    CURSOR u IS
  3      SELECT username
  4      FROM   all_users
  5      ORDER BY username;
  6    v_cnt1 NUMBER;
  7    v_cnt2 NUMBER;
  8    v_tbl  VARCHAR2(30) := 'EMP';
  9  BEGIN
10    FOR users IN u
11    LOOP
12      SELECT count(*)
13      INTO   v_cnt1
14      FROM   ALL_TABLES
15      WHERE  owner = users.username
16      AND    table_name = v_tbl;
17      IF v_cnt1 > 0 THEN
18        EXECUTE IMMEDIATE 'SELECT count(*) FROM '||users.username||'.'||v_tbl INTO v_cnt2;
19        DBMS_OUTPUT.PUT_LINE('User: '||users.username||' Count on '||v_tbl||':'||v_cnt2);
20      END IF;
21    END LOOP;
22* END;
SQL> /
User: FRED Count on EMP:27
User: BOB Count on EMP:34
PL/SQL procedure successfully completed.
SQL>