try timestamp(14) instead.
sitnikov@stripped wrote:
>Description:
> Problem with timestamp(8) and GROUP BY
>
>How-To-Repeat:
>
>mysql> CREATE TABLE test (
> -> id int auto_increment,
> -> dd timestamp(8),
> -> data int,
> -> PRIMARY KEY (id)
> -> );
>Query OK, 0 rows affected (0.01 sec)
>
>mysql> INSERT INTO test (data) VALUES(1),(2),(3),(4);
>Query OK, 4 rows affected (0.00 sec)
>Records: 4 Duplicates: 0 Warnings: 0
>
>mysql> SELECT * FROM test;
>+----+----------+------+
>| id | dd | data |
>+----+----------+------+
>| 1 | 20020527 | 1 |
>| 2 | 20020527 | 2 |
>| 3 | 20020527 | 3 |
>| 4 | 20020527 | 4 |
>+----+----------+------+
>4 rows in set (0.00 sec)
>
>mysql> SELECT dd,count(*) FROM test GROUP BY dd;
>+----------+----------+
>| dd | count(*) |
>+----------+----------+
>| 20020527 | 4 |
>+----------+----------+
>1 row in set (0.00 sec)
>
>mysql> UPDATE test SET dd='20020527000001' WHERE id=1;
>Query OK, 1 row affected (0.00 sec)
>Rows matched: 1 Changed: 1 Warnings: 0
>
>mysql> UPDATE test SET dd='20020527000002' WHERE id=2;
>Query OK, 1 row affected (0.00 sec)
>Rows matched: 1 Changed: 1 Warnings: 0
>
>mysql> UPDATE test SET dd='20020527000003' WHERE id=3;
>Query OK, 1 row affected (0.00 sec)
>Rows matched: 1 Changed: 1 Warnings: 0
>
>mysql> UPDATE test SET dd='20020527000004' WHERE id=4;
>Query OK, 1 row affected (0.00 sec)
>Rows matched: 1 Changed: 1 Warnings: 0
>
>mysql> SELECT dd,count(*) FROM test GROUP BY dd;
>+----------+----------+
>| dd | count(*) |
>+----------+----------+
>| 20020527 | 1 |
>| 20020527 | 1 |
>| 20020527 | 1 |
>| 20020527 | 1 |
>+----------+----------+
>4 rows in set (0.00 sec)
>
>Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
>This software comes with ABSOLUTELY NO WARRANTY. This is free software,
>and you are welcome to modify and redistribute it under the GPL license
>
>Server version 3.23.49a-max-log
>Protocol version 10
>Connection Localhost via UNIX socket
>UNIX socket /tmp/mysql.sock
>Uptime: 65 days 4 hours 9 min 10 sec
>
>Threads: 6 Questions: 69973912 Slow queries: 688 Opens: 129933 Flush tables: 3
> Open tables: 506 Queries per second avg: 12.427
>
>>Environment:
>>
>
>System: Linux gap 2.4.18 #3 SMP Fri Mar 15 14:40:03 EET 2002 i686 unknown
>Architecture: i686
>
>Some paths: /usr/bin/perl /usr/bin/make /usr/bin/gmake /usr/bin/gcc /usr/bin/cc
>GCC: Reading specs from /usr/lib/gcc-lib/i486-suse-linux/2.95.3/specs
>gcc version 2.95.3 20010315 (SuSE)
>Compilation info: CC='gcc' CFLAGS='-Wimplicit -Wreturn-type -Wid-clash-51 -Wswitch
> -Wtrigraphs -Wcomment -W -Wchar-subscripts -Wformat -Wimplicit-function-dec -Wimplicit-int
> -Wparentheses -Wsign-compare -Wwrite-strings -Wunused -mcpu=pentiumpro -O3
> -fno-omit-frame-pointer' CXX='gcc' CXXFLAGS='-Wimplicit -Wreturn-type -Wid-clash-51
> -Wswitch -Wtrigraphs -Wcomment -W -Wchar-subscripts -Wformat -Wimplicit-function-dec
> -Wimplicit-int -Wparentheses -Wsign-compare -Wwrite-strings -Woverloaded-virtual
> -Wextern-inline -Wsign-promo -Wreorder -Wctor-dtor-privacy -Wnon-virtual-dtor
> -felide-constructors -fno-exceptions -fno-rtti -mcpu=pentiumpro -O3
> -fno-omit-frame-pointer' LDFLAGS=''
>LIBC:
>-rwxr-xr-x 1 root root 1384040 Dec 18 18:24 /lib/libc.so.6
>-rw-r--r-- 1 root root 25214756 Dec 18 18:07 /usr/lib/libc.a
>-rw-r--r-- 1 root root 178 Dec 18 18:07 /usr/lib/libc.so
>Configure command: ./configure --prefix=/usr/local/mysql --enable-assembler
> --with-extra-charsets=complex --enable-thread-safe-client --with-innodb --with-berkeley-db
> --enable-thread-safe-client --with-other-libc=/usr/local/mysql-glibc
> '--with-comment=Official MySQL Binary' --prefix=/usr/local/mysql
> --with-extra-charset=complex --enable-thread-safe-client --enable-local-infile
> --with-server-suffix=-max 'CFLAGS=-Wimplicit -Wreturn-type -Wid-clash-51 -Wswitch
> -Wtrigraphs -Wcomment -W -Wchar-subscripts -Wformat -Wimplicit-function-dec -Wimplicit-int
> -Wparentheses -Wsign-compare -Wwrite-strings -Wunused -mcpu=pentiumpro -O3
> -fno-omit-frame-pointer' 'CXXFLAGS=-Wimplicit -Wreturn-type -Wid-clash-51 -Wswitch
> -Wtrigraphs -Wcomment -W -Wchar-subscripts -Wformat -Wimplicit-function-dec -Wimplicit-int
> -Wparentheses -Wsign-compare -Wwrite-strings -Woverloaded-virtual -Wextern-inline
> -Wsign-promo -Wreorder -Wctor-dtor-privacy -Wnon-virtual-dtor -felide-constructors
> -fno-exceptions -fno-r!
> tti -mcpu=pentiumpro -O3 -fno-omit-frame-pointer' CXX=gcc
>
>
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