Bugs item #2644925, was opened at 2009-02-27 11:49
Message generated for change (Comment added) made by stmane
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Category: SQL/Core
Group: SQL CVS Head
Status: Open
Resolution: None
Priority: 5
Private: Yes
Submitted By: Jens Oehlschlägel (jens_oehl)
Assigned to: Niels Nes (nielsnes)
Summary: crash-points with 1.5M

Initial Comment:
Stefan,
attached you find a csv with the forward non-ODBC timings of
- 600k version from Feb20
- 600k version from Feb26
- 1.5M version from Feb26
The 1.5M was crashing several times, number of the crashing queries: 875, 983, 
987, 999, the four SQLs follow for your convenience.

version from Feb26 is

MonetDB server v5.10.0 (32-bit), based on kernel v1.28.0 (32-bit oids)
Copyright (c) 1993-July 2008 CWI
Copyright (c) August 2008-2009 MonetDB B.V., all rights reserved
Visit http://monetdb.cwi.nl/ for further information
Configured for prefix: C:\Documents and Settings\sjoerd\My 
Documents\src\stable\vs32\NT32
Libraries:
  libpcre: 7.7 2008-05-07
  libxml2: 2.6.32
Compiled by: sjo...@gans
Compilation: cl -GF -W3 -WX -wd4273 -wd4102 -MD -nologo -Ox
Linking    : cl -GF -W3 -WX -wd4273 -wd4102 -MD -nologo -Ox

crashing query SQL:

SELECT KX, PostingYear, PostingStep, SUM(num1) as sNum1, SUM(den1) as sDen1 
FROM ( SELECT MIN(1) as PostingStep, PostingYear, Min('X') as KX, SUM(DT_D02) 
as num1, MIN(0) as den1 FROM voc.q_SourceKPIReportsTarget WHERE 
((PostingYear>=2005)  AND (PostingYear <= 2006)) GROUP BY PostingYear) as sSub3 
GROUP BY KX, PostingYear, PostingStep;

SELECT KX, PostingYear, PostingStep, SUM(num1) as sNum1, SUM(den1) as sDen1 
FROM ( SELECT Postingsemi as PostingStep, PostingYear, Min('X') as KX, 
SUM(DT_D02) as num1, MIN(0) as den1 FROM voc.q_SourceKPIReports WHERE 
(((PostingYear>2005  AND PostingYear<2006) OR (PostingYear=2005  AND 
Postingsemi>=1) OR (PostingYear=2006  AND Postingsemi<=2))) GROUP BY 
PostingYear, Postingsemi) as sSub3 GROUP BY KX, PostingYear, PostingStep;

SELECT KX, PostingYear, PostingStep, SUM(num1) as sNum1, SUM(den1) as sDen1 
FROM ( SELECT Postingsemi as PostingStep, PostingYear, Min('X') as KX, 
SUM(DT_D02) as num1, MIN(0) as den1 FROM voc.q_SourceKPIReportsTarget WHERE 
(((PostingYear>2005  AND PostingYear<2006) OR (PostingYear=2005  AND 
Postingsemi>=1) OR (PostingYear=2006  AND Postingsemi<=2))) GROUP BY 
PostingYear, Postingsemi) as sSub3 GROUP BY KX, PostingYear, PostingStep;

SELECT KX, PostingYear, PostingStep, SUM(num1) as sNum1, SUM(den1) as sDen1 
FROM ( SELECT Postingsemi as PostingStep, PostingYear, Min('X') as KX, 
SUM(DT_D04) as num1, MIN(0) as den1 FROM voc.q_SourceKPIReportsTarget WHERE 
(((PostingYear>2005  AND PostingYear<2006) OR (PostingYear=2005  AND 
Postingsemi>=1) OR (PostingYear=2006  AND Postingsemi<=2))) GROUP BY 
PostingYear, Postingsemi) as sSub3 GROUP BY KX, PostingYear, PostingStep;


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

>Comment By: Stefan Manegold (stmane)
Date: 2009-02-27 19:09

Message:
Jens,

thank you very much for the details.

I have not yet been able to have a closer look at the 4 failing queries on
a 2 GB Win32 machine,
but we plugged some more leaks since yesterday's installer.
This afternoon, Sjoerd built new installers which will most probably be
the version that we will "officially" release;
you find them at
http://monetdb.cwi.nl/downloads/Windows/Feb2009/
*Maybe* this already helps with the four failing queries ...


Unfortunately we have not yet been able to properly fix the (indeed)
"scary" SUM-CASE bug you reported.

We'll provide you with an other installer, once also this bug is fixed.

Stefan


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