Date: 2018-04-03 16:02:52 +0200
From: @PedroTadim
To: SQL devs <>
Version: -- development
CC: @njnes

Last updated: 2018-06-20 11:02:09 +0200

Comment 26332

Date: 2018-04-03 16:02:52 +0200
From: @PedroTadim

User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36
Build Identifier:

Run the query bellow for a SIGSEGV on rel_project2groupby call on rel_select.c.

Reproducible: Always

Steps to Reproduce:

1. SELECT + NULLIF ( + 67, + + NULLIF ( + + 46, 66 - CASE WHEN 51 IN ( + 91 ) THEN + SUM ( CAST ( NULL AS INTEGER ) ) + - 92 ELSE - ( - 47 ) END ) ) / - CAST ( NULL AS INTEGER ) + + NULLIF ( - COALESCE ( CAST ( - 35 AS INTEGER ), + 6, COUNT ( ALL 28 ) ), 75 + 14 );

Actual Results:

SIGSEGV on rel_project2groupby call on rel_select.c

Expected Results:

A single NULL value

Backtrace:

0 0x00007fffe840ab95 in rel_project2groupby (sql=0x7fffb000a0d0, g=0x7fffb01e3c30) at rel_select.c:187
1 0x00007fffe841beb2 in _rel_aggr (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, distinct=0, s=0x1946150, aname=0x7fffb01e1ab0 "sum", args=0x7fffb01e1c80, f=2) at rel_select.c:3607
2 0x00007fffe841d4d0 in rel_aggr (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, se=0x7fffb01e1ca0, f=2) at rel_select.c:3812
3 0x00007fffe84211bd in rel_value_exp2 (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, se=0x7fffb01e1ca0, f=2, ek=..., is_last=0x7fffc72e06cc) at rel_select.c:4663
4 0x00007fffe8421e66 in rel_value_exp (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, se=0x7fffb01e1ca0, f=2, ek=...) at rel_select.c:4845
5 0x00007fffe841b369 in rel_binop (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, se=0x7fffb01e1e80, f=2, ek=...) at rel_select.c:3450
6 0x00007fffe8421166 in rel_value_exp2 (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, se=0x7fffb01e1e80, f=2, ek=..., is_last=0x7fffc72e088c) at rel_select.c:4659
7 0x00007fffe8421e66 in rel_value_exp (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, se=0x7fffb01e1e80, f=2, ek=...) at rel_select.c:4845
8 0x00007fffe841d9ee in rel_case (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, token=46, opt_cond=0x0, when_search_list=0x7fffb01e1f20, opt_else=0x7fffb01e2000, f=2) at rel_select.c:3863
9 0x00007fffe841e3fe in rel_case_exp (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, se=0x7fffb01e2080, f=2) at rel_select.c:3983
10 0x00007fffe8421d63 in rel_value_exp2 (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, se=0x7fffb01e2080, f=2, ek=..., is_last=0x7fffc72e0b7c) at rel_select.c:4819
11 0x00007fffe8421e66 in rel_value_exp (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, se=0x7fffb01e2080, f=2, ek=...) at rel_select.c:4845
12 0x00007fffe841b3ac in rel_binop (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, se=0x7fffb01e21a0, f=2, ek=...) at rel_select.c:3451
13 0x00007fffe8421166 in rel_value_exp2 (sql=0x7fffb000a0d0, rel=0x7fffc72e1780, se=0x7fffb01e21a0, f=2, ek=..., is_last=0x7fffc72e0d3c) at rel_select.c:4659
...

Comment 26334

Date: 2018-04-03 16:36:56 +0200
From: MonetDB Mercurial Repository <>

Changeset 549d90c8aba5 made by Pedro Ferreira pedro.ferreira@monetdbsolutions.com in the MonetDB repo, refers to this bug.

For complete details, see https//devmonetdborg/hg/MonetDB?cmd=changeset;node=549d90c8aba5

Changeset description:

Added tests for bugs 6565 and 6566

Comment 26336

Date: 2018-04-04 13:44:59 +0200
From: MonetDB Mercurial Repository <>

Changeset 52858676c04b 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=52858676c04b

Changeset description:

fxes for bugs 6565 and 6565
6565 make sure we handle just created projections in the project2groupby
6566 when rewriting a function with a 'NULL' argument into NULL, cast it into the right type