10’000 columns in a query

You cannot have more than 1000 columns in a view, but what about a query?

I tried

select 1,2,3,4,....,10000 from dual;

it seems to work fine. However, when increasing, I am facing various errors :

select 1,2,3,4,....,17000 from dual;

*
ERROR at line 1:
ORA-00600: internal error code, arguments: [15201], 
[], [], [], [], [], [], []

or even

select 1,2,3,4,....,50000 from dual;

*
ERROR at line 1:
ORA-03113: end-of-file on communication channel

7 thoughts on “10’000 columns in a query”

Tim Hall April 11, 2007 at 09:50

If I saw a query with 10,000 columns in it, I would calmly make my way to the nearest emergency exit, whilst avoiding any eye contact. I would then proceed home and never return to that site. 🙂

heers

Tim…
Vidya April 12, 2007 at 16:15

Laurent:
1000 columns in a view – what about a mview is it the same?
Satish Kandi April 13, 2007 at 07:36

How did you execute that query?

I tried from sqlplus and received SP2-0027: Input is too long (> 2499 characters) – line ignored.

Toad hangs after 2000 columns.
laurentschneider Post authorApril 13, 2007 at 08:48

yes, but you have to do it on more than one line

select 1,
2,
3,
….
,10000 from dual;

laurentschneider Post authorApril 13, 2007 at 09:08

create materialized view mv as select
1 c1,
2 c2,
3 c3,
4 c4,
5 c5,
6 c6,
7 c7,
8 c8,
9 c9,
....
1024 c1024 from dual;

1024 c1024 from dual
                *
ERROR at line 1025:
ORA-01792: maximum number of columns in a table or view is 1000

Satish Kandi April 18, 2007 at 14:10

Ah… Thanks.. thats really being dumb on my part.
Jude Onuh March 22, 2011 at 22:57

@Vidya
Since Materialized View consists of 2 main components, a View and a Log Table, it suffers any constraint that either View or Table or both face. Therefore, the maximum columns a Materialized View can have is 1,000.

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