Date: 2017-07-08 22:56:14 +0200
From: @mlkersten
To: SQL devs <>
Version: -- development
CC: @njnes

Last updated: 2017-10-26 14:01:43 +0200

Comment 25440

Date: 2017-07-08 22:56:14 +0200
From: @mlkersten

User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:54.0) Gecko/20100101 Firefox/54.0
Build Identifier:

The sample test causes monetdb default branch to crash in the following

A test file has been added

hread 6 "mserver5" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f302cd56700 (LWP 10293)]
0x00007f304e456433 in count_col (tr=0x7f301c001b00, c=0x7f301c1369c0, all=1) at /export/scratch1/mk/default//package/sql/storage/bat/bat_storage.c:961
961 c->data = timestamp_delta(oc->data, tr->stime);
(gdb) where
0 0x00007f304e456433 in count_col (tr=0x7f301c001b00, c=0x7f301c1369c0, all=1) at /export/scratch1/mk/default//package/sql/storage/bat/bat_storage.c:961
1 0x00007f304e3320a5 in stmt_tid (be=0x7f301c0db0f0, t=0x7f301c136860, partition=1) at /export/scratch1/mk/default//package/sql/backends/monet5/sql_statement.c:476
2 0x00007f304e316a60 in rel2bin_basetable (be=0x7f301c0db0f0, rel=0x7f301c134550) at /export/scratch1/mk/default//package/sql/backends/monet5/rel_bin.c:1171
3 0x00007f304e326f59 in subrel_bin (be=0x7f301c0db0f0, rel=0x7f301c134550, refs=0x7f301c134fc0) at /export/scratch1/mk/default//package/sql/backends/monet5/rel_bin.c:4755
4 0x00007f304e31c975 in rel2bin_project (be=0x7f301c0db0f0, rel=0x7f301c134930, refs=0x7f301c134fc0, topn=0x0) at /export/scratch1/mk/default//package/sql/backends/monet5/rel_bin.c:2418
5 0x00007f304e3270bc in subrel_bin (be=0x7f301c0db0f0, rel=0x7f301c134930, refs=0x7f301c134fc0) at /export/scratch1/mk/default//package/sql/backends/monet5/rel_bin.c:4789
6 0x00007f304e3273b3 in output_rel_bin (be=0x7f301c0db0f0, rel=0x7f301c134930) at /export/scratch1/mk/default//package/sql/backends/monet5/rel_bin.c:4854
7 0x00007f304e341031 in sql_relation2stmt (be=0x7f301c0db0f0, r=0x7f301c134930) at /export/scratch1/mk/default//package/sql/backends/monet5/sql_gencode.c:474
8 0x00007f304e341390 in backend_dumpstmt (be=0x7f301c0db0f0, mb=0x7f301c107fe0, r=0x7f301c134930, top=1, add_end=1, query=0x7f301c001a30 "select * from cls_0_statistics;")
at /export/scratch1/mk/default//package/sql/backends/monet5/sql_gencode.c:515
9 0x00007f304e341bf5 in backend_dumpproc (be=0x7f301c0db0f0, c=0x7f304fbf6348, cq=0x7f301c118010, r=0x7f301c134930) at /export/scratch1/mk/default//package/sql/backends/monet5/sql_gencode.c:642
10 0x00007f304e309d30 in SQLparser (c=0x7f304fbf6348) at /export/scratch1/mk/default//package/sql/backends/monet5/sql_scenario.c:1145

Reproducible: Always

Steps to Reproduce:

create table cls_0(i integer, j integer, k string);
insert into cls_0 values
( 1, 99, 'b'),
( 2, 99, 'b'),
( 3, 99, 'b'),
( 4, 99, 'a'),
( 5, 99, 'a'),
( 6, 99, 'a'),
( 7, 33, 'b'),
( 8, 33, 'b'),
( 9, 33, 'b'),
( 10, 33, 'a'),
( 11, 33, 'a'),
( 12, 33, 'a');
select * from cls_0;

-- The metric functions over all columns are derived in one blow.
-- The result can be cached for easy recall
create procedure cls_0_statistics()
begin
create table cls_0_statistics ( col string, fcn string, tpe string, val string);
insert into cls_0_statistics values
('i', 'min', 'int', (select cast( min( i ) as string) from cls_0)),
('i', 'max', 'int', (select cast( min( i ) as string) from cls_0)),
('j', 'min', 'int', (select cast( min( i ) as string) from cls_0));
end;

select * from cls_0_statistics;

Comment 25454

Date: 2017-07-12 11:22:55 +0200
From: MonetDB Mercurial Repository <>

Changeset 11c1724677ad made by Martin Kersten mk@cwi.nl in the MonetDB repo, refers to this bug.

For complete details, see https//devmonetdborg/hg/MonetDB?cmd=changeset;node=11c1724677ad

Changeset description:

Added file for bug #6348

Comment 25518

Date: 2017-07-28 20:24:31 +0200
From: @njnes

fixed, problem was in the multiple rows of insert values

Comment 25520

Date: 2017-07-28 20:25:59 +0200
From: MonetDB Mercurial Repository <>

Changeset e9c19dd387e7 made by Niels Nes niels@cwi.nl in the MonetDB repo, refers to this bug.

For complete details, see https//devmonetdborg/hg/MonetDB?cmd=changeset;node=e9c19dd387e7

Changeset description:

fixed bug #6348, only rename non constant expressions
fixed bug #6352, when pushing projects up, we should include subqueries.