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Date: 2017-12-08 15:22:46 +0100 From: @swingbit To: SQL devs <> Version: 11.27.9 (Jul2017-SP2)
Last updated: 2018-02-12 16:12:05 +0100
Date: 2017-12-08 15:22:46 +0100 From: @swingbit
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.62 Safari/537.36 Build Identifier:
-- Just to be sure we can't blame mitosis set optimizer='sequential_pipe';
-- Sequence of integers from 1 to 2050 create table dict as select value from generate_series(cast(1 as int), cast(2050 as int)) with data;
create table t (i int); insert into t values (2),(2);
-- This should return 1 tuple, with value 2 select * from dict where value in (select i from t);
+-------+ | value | +=======+ | 2 | | 2 | +-------+ 2 tuples (1.443ms)
Obviously (for how it was created) dict contains only one 2:
select * from dict where value = 2;
+-------+ | value | +=======+ | 2 | +-------+ 1 tuple (1.443ms)
Interesting notes:
Reproducible: Always
$ mserver5 --ver MonetDB 5 server v11.27.10 (64-bit, 128-bit integers) This is an unreleased version Copyright (c) 1993-July 2008 CWI Copyright (c) August 2008-2017 MonetDB B.V., all rights reserved Visit https://www.monetdb.org/ for further information Found 15.6GiB available memory, 8 available cpu cores Libraries: libpcre: 8.41 2017-07-05 (compiled with 8.41) openssl: OpenSSL 1.1.0g 2 Nov 2017 (compiled with OpenSSL 1.1.0g-fips 2 Nov 2017) libxml2: 2.9.4 (compiled with 2.9.4) Compiled by: roberto@photon.hq.spinque.com (x86_64-unknown-linux-gnu) Compilation: gcc -g -Werror -Wall -Wextra -W -Werror-implicit-function-declaration -Wpointer-arith -Wdeclaration-after-statement -Wundef -Wformat=2 -Wno-format-nonliteral -Winit-self -Winvalid-pch -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wpacked -Wunknown-pragmas -Wvariadic-macros -fstack-protector-all -Wstack-protector -Wpacked-bitfield-compat -Wsync-nand -Wjump-misses-init -Wmissing-include-dirs -Wlogical-op -Wduplicated-cond -Wduplicated-branches -Wrestrict -Wnested-externs -Wunreachable-code Linking : /usr/bin/ld -m elf_x86_64
Date: 2017-12-08 16:16:44 +0100 From: MonetDB Mercurial Repository <>
Changeset 6af80c755cc6 made by Sjoerd Mullender sjoerd@acm.org in the MonetDB repo, refers to this bug.
For complete details, see https//devmonetdborg/hg/MonetDB?cmd=changeset;node=6af80c755cc6
Changeset description:
Don't use fetchjoin implementation for semijoin. This fixes bug #6488.
The text was updated successfully, but these errors were encountered:
No branches or pull requests
Date: 2017-12-08 15:22:46 +0100
From: @swingbit
To: SQL devs <>
Version: 11.27.9 (Jul2017-SP2)
Last updated: 2018-02-12 16:12:05 +0100
Comment 25971
Date: 2017-12-08 15:22:46 +0100
From: @swingbit
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.62 Safari/537.36
Build Identifier:
-- Just to be sure we can't blame mitosis
set optimizer='sequential_pipe';
-- Sequence of integers from 1 to 2050
create table dict as
select value from generate_series(cast(1 as int), cast(2050 as int))
with data;
create table t (i int);
insert into t values (2),(2);
-- This should return 1 tuple, with value 2
select * from dict where value in (select i from t);
+-------+
| value |
+=======+
| 2 |
| 2 |
+-------+
2 tuples (1.443ms)
Obviously (for how it was created) dict contains only one 2:
select * from dict where value = 2;
+-------+
| value |
+=======+
| 2 |
+-------+
1 tuple (1.443ms)
Interesting notes:
Reproducible: Always
$ mserver5 --ver
MonetDB 5 server v11.27.10 (64-bit, 128-bit integers)
This is an unreleased version
Copyright (c) 1993-July 2008 CWI
Copyright (c) August 2008-2017 MonetDB B.V., all rights reserved
Visit https://www.monetdb.org/ for further information
Found 15.6GiB available memory, 8 available cpu cores
Libraries:
libpcre: 8.41 2017-07-05 (compiled with 8.41)
openssl: OpenSSL 1.1.0g 2 Nov 2017 (compiled with OpenSSL 1.1.0g-fips 2 Nov 2017)
libxml2: 2.9.4 (compiled with 2.9.4)
Compiled by: roberto@photon.hq.spinque.com (x86_64-unknown-linux-gnu)
Compilation: gcc -g -Werror -Wall -Wextra -W -Werror-implicit-function-declaration -Wpointer-arith -Wdeclaration-after-statement -Wundef -Wformat=2 -Wno-format-nonliteral -Winit-self -Winvalid-pch -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wpacked -Wunknown-pragmas -Wvariadic-macros -fstack-protector-all -Wstack-protector -Wpacked-bitfield-compat -Wsync-nand -Wjump-misses-init -Wmissing-include-dirs -Wlogical-op -Wduplicated-cond -Wduplicated-branches -Wrestrict -Wnested-externs -Wunreachable-code
Linking : /usr/bin/ld -m elf_x86_64
Comment 25974
Date: 2017-12-08 16:16:44 +0100
From: MonetDB Mercurial Repository <>
Changeset 6af80c755cc6 made by Sjoerd Mullender sjoerd@acm.org in the MonetDB repo, refers to this bug.
For complete details, see https//devmonetdborg/hg/MonetDB?cmd=changeset;node=6af80c755cc6
Changeset description:
The text was updated successfully, but these errors were encountered: