Need a query for this logic

Question

Hi
table1
id     cus_id     val
boi     p          gh
hdc    s           vc
123    p          xy
123    s          xz
123   m          xb
123  ll            zx
Note: 123 is default values 
o/p
id     cus_id     val
boi     p          gh
boi     s          xz
boi    m          xb
boi     ll          zx
hdc    s           vc
hdc   p            xy
hdc   m          xb
hdc   ll           zx
123    p          xy
123    s          xz
123   m          xb
123   ll            zx

Answer 1

Hi,
Pleaes check this:
WITH t AS
        (SELECT 'boi' id, 'p' cus_id, 'gh' val FROM DUAL
         UNION ALL
         SELECT 'hdc', 's', 'vc' FROM DUAL
         UNION ALL
         SELECT '123', 'p', 'xy' FROM DUAL
         UNION ALL
         SELECT '123', 's', 'xz' FROM DUAL
         UNION ALL
         SELECT '123', 'm', 'xb' FROM DUAL
         UNION ALL
         SELECT '123', 'll', 'zx' FROM DUAL),
     tt AS
        (SELECT *
           FROM t
          WHERE id = '123')
SELECT a.id, b.cus_id, b.val
  FROM t a, tt b
WHERE a.id <> '123' AND a.cus_id <> b.cus_id
UNION ALL
SELECT * FROM t
order by 1;
Cheers,
Manik.