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Don't write rows in MyISAM tables when using count(distinct)

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Don't read MyISAM header when running without locking
This commit is contained in:
monty@tik.mysql.fi
2001-05-23 02:40:46 +03:00
parent a3be64bfa5
commit 8685094e15
13 changed files with 87 additions and 39 deletions
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25
sql/mysqld.cc
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@ -3028,14 +3028,13 @@ static void usage(void)
puts("\
-O, --set-variable var=option\n\
Give a variable an value. --help lists variables\n\
-Sg, --skip-grant-tables\n\
Start without grant tables. This gives all users\n\
FULL ACCESS to all tables!\n\
--safe-mode Skip some optimize stages (for testing)\n\
--skip-concurrent-insert\n\
Don't use concurrent insert with MyISAM\n\
--skip-delay-key-write\n\
Ignore the delay_key_write option for all tables\n\
--skip-grant-tables Start without grant tables. This gives all users\n\
FULL ACCESS to all tables!\n\
--skip-host-cache Don't cache host names\n\
--skip-locking Don't use system locking. To use isamchk one has\n\
to shut down the server.\n\
@ -3172,7 +3171,7 @@ static void set_options(void)
#endif
#if defined( HAVE_mit_thread ) || defined( __WIN__ ) || defined( HAVE_LINUXTHREADS )
my_disable_locking = 1;
my_disable_locking=myisam_single_user= 1;
#endif
my_bind_addr = htonl( INADDR_ANY );
}
@ -3265,20 +3264,6 @@ static void get_options(int argc,char **argv)
test_flags= optarg ? (uint) atoi(optarg) : 0;
opt_endinfo=1;
break;
case 'S':
if (!optarg)
opt_specialflag|= SPECIAL_NO_NEW_FUNC | SPECIAL_SAFE_MODE;
else if (!strcmp(optarg,"l"))
my_disable_locking=1;
else if (!strcmp(optarg,"g"))
opt_noacl=1;
else
{
fprintf(stderr,"%s: Unrecognized option: %s\n",my_progname,optarg);
use_help();
exit(1);
}
break;
case (int) OPT_BIG_TABLES:
thd_startup_options|=OPTION_BIG_TABLES;
break;
@ -3456,7 +3441,7 @@ static void get_options(int argc,char **argv)
opt_noacl=1;
break;
case (int) OPT_SKIP_LOCK:
my_disable_locking=1;
my_disable_locking=myisam_single_user= 1;
break;
case (int) OPT_SKIP_HOST_CACHE:
opt_specialflag|= SPECIAL_NO_HOST_CACHE;
@ -4022,7 +4007,7 @@ static int get_service_parameters()
}
else if ( lstrcmp(szKeyValueName, TEXT("KeyBufferSize")) == 0 )
{
SET_CHANGEABLE_VARVAL( "key_buffer" );
SET_CHANGEABLE_VARVAL( "key_buffer_size" );
}
else if ( lstrcmp(szKeyValueName, TEXT("LongQueryTime")) == 0 )
{