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Diffstat (limited to 'storage/myisam/myisamchk.c')
-rw-r--r--storage/myisam/myisamchk.c30
1 files changed, 27 insertions, 3 deletions
diff --git a/storage/myisam/myisamchk.c b/storage/myisam/myisamchk.c
index 78ae756bf7c..a90495e5fcb 100644
--- a/storage/myisam/myisamchk.c
+++ b/storage/myisam/myisamchk.c
@@ -67,6 +67,7 @@ static const char *field_pack[]=
"no zeros", "blob", "constant", "table-lockup",
"always zero","varchar","unique-hash","?","?"};
+static const char *myisam_stats_method_str="nulls_unequal";
static void get_options(int *argc,char * * *argv);
static void print_version(void);
@@ -155,7 +156,7 @@ enum options_mc {
OPT_READ_BUFFER_SIZE, OPT_WRITE_BUFFER_SIZE, OPT_SORT_BUFFER_SIZE,
OPT_SORT_KEY_BLOCKS, OPT_DECODE_BITS, OPT_FT_MIN_WORD_LEN,
OPT_FT_MAX_WORD_LEN, OPT_FT_STOPWORD_FILE,
- OPT_MAX_RECORD_LENGTH, OPT_AUTO_CLOSE
+ OPT_MAX_RECORD_LENGTH, OPT_AUTO_CLOSE, OPT_STATS_METHOD
};
static struct my_option my_long_options[] =
@@ -336,6 +337,11 @@ static struct my_option my_long_options[] =
"Use stopwords from this file instead of built-in list.",
(gptr*) &ft_stopword_file, (gptr*) &ft_stopword_file, 0, GET_STR,
REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
+ {"stats_method", OPT_STATS_METHOD,
+ "Specifies how index statistics collection code should threat NULLs. "
+ "Possible values of name are \"nulls_unequal\" (default behavior for 4.1/5.0), and \"nulls_equal\" (emulate 4.0 behavior).",
+ (gptr*) &myisam_stats_method_str, (gptr*) &myisam_stats_method_str, 0,
+ GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
{ 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
};
@@ -465,6 +471,12 @@ static void usage(void)
#include <help_end.h>
+const char *myisam_stats_method_names[] = {"nulls_unequal", "nulls_equal",
+ NullS};
+TYPELIB myisam_stats_method_typelib= {
+ array_elements(myisam_stats_method_names) - 1, "",
+ myisam_stats_method_names, NULL};
+
/* Read options */
static my_bool
@@ -684,6 +696,18 @@ get_one_option(int optid,
else
check_param.testflag|= T_CALC_CHECKSUM;
break;
+ case OPT_STATS_METHOD:
+ {
+ int method;
+ myisam_stats_method_str= argument;
+ if ((method=find_type(argument, &myisam_stats_method_typelib, 2)) <= 0)
+ {
+ fprintf(stderr, "Invalid value of stats_method: %s.\n", argument);
+ exit(1);
+ }
+ check_param.stats_method= (enum_mi_stats_method) (method-1);
+ break;
+ }
#ifdef DEBUG /* Only useful if debugging */
case OPT_START_CHECK_POS:
check_param.start_check_pos= strtoull(argument, NULL, 0);
@@ -1237,7 +1261,7 @@ static void descript(MI_CHECK *param, register MI_INFO *info, my_string name)
share->base.raid_chunksize);
}
if (share->options & (HA_OPTION_CHECKSUM | HA_OPTION_COMPRESS_RECORD))
- printf("Checksum: %23s\n",llstr(info->s->state.checksum,llbuff));
+ printf("Checksum: %23s\n",llstr(info->state->checksum,llbuff));
;
if (share->options & HA_OPTION_DELAY_KEY_WRITE)
printf("Keys are only flushed at close\n");
@@ -1552,7 +1576,7 @@ static int mi_sort_records(MI_CHECK *param,
old_record_count=info->state->records;
info->state->records=0;
if (sort_info.new_data_file_type != COMPRESSED_RECORD)
- share->state.checksum=0;
+ info->state->checksum=0;
if (sort_record_index(&sort_param,info,keyinfo,share->state.key_root[sort_key],
temp_buff, sort_key,new_file,update_index) ||