Bugs item #2658243, was opened at 2009-03-03 19:06
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=482468&aid=2658243&group_id=56967
Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: SQL/Core
Group: SQL "stable"
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Roberto Cornacchia (cornuz)
Assigned to: Niels Nes (nielsnes)
Summary: SQL: INSERT INTO + ORDER BY
Initial Comment:
I'm not completely sure what SQL standard says here:
when we have
INSERT INTO mytable
SELECT .... ORDER BY a
are mytable's tuples supposed to be stored in a's order?
I would expect so, but on the other hand I wouldn't be surprised if the
standard didn't enforce that.
Anyway, currently the INSERT INTO seems to ignore the ORDER BY. Little test
follows:
create table unsorted (n int);
insert into unsorted values (2);
insert into unsorted values (1);
insert into unsorted values (4);
insert into unsorted values (3);
insert into unsorted values (5);
create table sorted (n int);
insert into sorted
select * from unsorted
order by n;
sql>select * from unsorted;
+---+
| n |
+===+
| 2 |
| 1 |
| 4 |
| 3 |
| 5 |
+---+
5 tuples
sql>select * from sorted;
+---+
| n |
+===+
| 2 |
| 1 |
| 4 |
| 3 |
| 5 |
+---+
5 tuples
To be really sure table "sorted" is not stored as sorted on "n":
sql>debug select * from sorted;
mdb># mdb.start();
mdb>
mdb># user.s3_1();
mdb>
mdb>#barrier _49 := language.dataflow();
mdb>
mdb># _1 := sql.bind("sys","sorted","n",0);
mdb>
mdb># _6 := sql.bind("sys","sorted","n",2);
mdb>info _1
Show info for 1458
#-----------------------------------------#
# h t # name
# str str # type
#-----------------------------------------#
...
[ "tsorted", "0" ]
...
----------------------------------------------------------------------
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=482468&aid=2658243&group_id=56967
------------------------------------------------------------------------------
Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
-OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
-Strategies to boost innovation and cut costs with open source participation
-Receive a $600 discount off the registration fee with the source code: SFAD
http://p.sf.net/sfu/XcvMzF8H
_______________________________________________
Monetdb-bugs mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/monetdb-bugs
