Please find this query very urgent

Question

Query-->select value from mytable where value is not null
     union all
select value from mytable where value is null
Ex: table name::mytable
In this table i have one column called 'value' and this column values shold be like this
12
null
13
null
11
null
....i executed above query the result will be like this
12
13
11
null
null
null
the above query executes on the table it's effect only one column result
but i need multiple columns to be effected same as above one only....Anyone please help me on it and give the query.

Answer 1

I have a table..MyTable(value number(10))
select * from Mytable;value
12
null
13
null
11
null
This is the table i have and the records i have...... and i need output like this
value
12
13
11
null
null
null ..............>ike this i need output for this i use this query i.e
Query-->select value from mytable where value is not null
union all
select value from mytable where value is null
------------>and this query gives only one column result i need multiple results like below: i have table with 2 columns like below
MyTable2(value1 number(10),value2 number(10))
select * fromMyTable2value1 value2
111 null
null 201
112 null
null 200
110 null
this is the table i have......... and i need output like below
value1 value2
111 201
112 200
110 null
null null
null null
NOTE:: If we use ORDER BY table records order must change, i don't want to change any order....please what is the query for that