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BUG#12232: Add a server option to treat NULL values as equal when calculating MyISAM index

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statistics (like 4.0 did) (patch #3, with review #1 & #2 feedback addressed)


include/myisam.h:
  BUG#12232: Add a server option to treat NULL values as equal when calculating MyISAM index statistics
myisam/mi_check.c:
  BUG#12232: Add a server option to treat NULL values as equal when calculating MyISAM index statistics
myisam/myisamchk.c:
  BUG#12232: Add a server option to treat NULL values as equal when calculating MyISAM index statistics
mysql-test/r/myisam.result:
  BUG#12232: Add a server option to treat NULL values as equal when calculating MyISAM index statistics
mysql-test/t/myisam.test:
  BUG#12232: Add a server option to treat NULL values as equal when calculating MyISAM index statistics
sql/ha_myisam.cc:
  BUG#12232: Add a server option to treat NULL values as equal when calculating MyISAM index statistics
sql/handler.h:
  BUG#12232: Add a server option to treat NULL values as equal when calculating MyISAM index statistics
sql/mysqld.cc:
  BUG#12232: Add a server option to treat NULL values as equal when calculating MyISAM index statistics
sql/set_var.cc:
  BUG#12232: Add a server option to treat NULL values as equal when calculating MyISAM index statistics
sql/sql_class.h:
  BUG#12232: Add a server option to treat NULL values as equal when calculating MyISAM index statistics
This commit is contained in:
unknown 2005-09-21 02:18:29 +04:00
commit a2a8216b20
10 changed files with 215 additions and 14 deletions
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9
sql/ha_myisam.cc
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@ -39,6 +39,12 @@ const char *myisam_recover_names[] =
TYPELIB myisam_recover_typelib= {array_elements(myisam_recover_names)-1,"",
myisam_recover_names, NULL};
const char *myisam_stats_method_names[] = {"nulls_inequal", "nulls_equal",
NullS};
TYPELIB myisam_stats_method_typelib= {
array_elements(myisam_stats_method_names) - 1, "",
myisam_stats_method_names, NULL};
/*****************************************************************************
** MyISAM tables
@ -278,6 +284,7 @@ int ha_myisam::check(THD* thd, HA_CHECK_OPT* check_opt)
param.db_name = table->table_cache_key;
param.table_name = table->table_name;
param.testflag = check_opt->flags | T_CHECK | T_SILENT;
param.stats_method= (enum_mi_stats_method)thd->variables.myisam_stats_method;
if (!(table->db_stat & HA_READ_ONLY))
param.testflag|= T_STATISTICS;
@ -367,6 +374,7 @@ int ha_myisam::analyze(THD *thd, HA_CHECK_OPT* check_opt)
param.testflag=(T_FAST | T_CHECK | T_SILENT | T_STATISTICS |
T_DONT_CHECK_CHECKSUM);
param.using_global_keycache = 1;
param.stats_method= (enum_mi_stats_method)thd->variables.myisam_stats_method;
if (!(share->state.changed & STATE_NOT_ANALYZED))
return HA_ADMIN_ALREADY_DONE;
@ -920,6 +928,7 @@ int ha_myisam::enable_indexes(uint mode)
T_CREATE_MISSING_KEYS);
param.myf_rw&= ~MY_WAIT_IF_FULL;
param.sort_buffer_length= thd->variables.myisam_sort_buff_size;
param.stats_method= (enum_mi_stats_method)thd->variables.myisam_stats_method;
param.tmpdir=&mysql_tmpdir_list;
if ((error= (repair(thd,param,0) != HA_ADMIN_OK)) && param.retry_repair)
{