Bugs item #2582389, was opened at 2009-02-09 19:57
Message generated for change (Settings changed) made by romulog
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https://sourceforge.net/tracker/?func=detail&atid=482468&aid=2582389&group_id=56967

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>Category: SQL/Core
Group: SQL "stable"
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Romulo Goncalves (romulog)
Assigned to: Niels Nes (nielsnes)
Summary: subtraction between two columns

Initial Comment:
I if run the following code:
create table t2(id int, inst float);

insert into t2 values(1, 0.2);
insert into t2 values(1, 0.4);

select l.id, r.inst, l.inst, (r.inst - l.inst) as diff from t2 l,  t2 r where 
r.id = l.id order by inst limit 2;

drop table t2;

I get:
MAPI  = mone...@localhost:50000
QUERY = select l.id, r.inst, l.inst, (r.inst - l.inst) as diff from t2 l,  t2 r 
where r.id = l.id order by inst limit 2;
ERROR = !MALException:batcalc.CMDbatSUB:requires bats of identical size

If I remove order by clause it works.

To complete the report I also detected a crash similar to the one reported on 
bug:
2581617          cardinality of expression is wrong

To see the crash just run the following query:
select l.id, (r.inst - l.inst) as diff from t2 l,  t2 r where r.id = l.id order 
by inst limit 2;



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Comment By: Romulo Goncalves (romulog)
Date: 2009-02-09 21:50

Message:
Test added at:

sql/src/test/BugTracker-2009/Tests/subtraction_between_two_columns.SF-2582389.sql

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=482468&aid=2582389&group_id=56967

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