database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

Merge 5.5 -> 5.5-mwl248.

Browse Source
This commit is contained in:
Igor Babaev
2012-11-02 20:38:05 -07:00
parent 4ffc9c3b01 32443e744d
commit 8d612adf70
86 changed files with 8317 additions and 126 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
sql/table.h
View File

@ -45,6 +45,7 @@ struct TABLE_LIST;
class ACL_internal_schema_access;
class ACL_internal_table_access;
class Field;
class Table_statistics;
/*
Used to identify NESTED_JOIN structures within a join (applicable only to
@ -577,6 +578,15 @@ struct TABLE_SHARE
KEY *key_info; /* data of keys in database */
uint *blob_field; /* Index to blobs in Field arrray*/
bool stats_can_be_read; /* Memory for statistical data is allocated */
bool stats_is_read; /* Statistical data for table has been read
from statistical tables */
/*
This structure is used for statistical data on the table
that has been read from the statistical table table_stat
*/
Table_statistics *read_stats;
uchar *default_values; /* row with default values */
LEX_STRING comment; /* Comment about table */
CHARSET_INFO *table_charset; /* Default charset of string fields */
@ -1007,6 +1017,15 @@ public:
*/
query_id_t query_id;
/*
This structure is used for statistical data on the table that
is collected by the function collect_statistics_for_table
*/
Table_statistics *collected_stats;
/* The estimate of the number of records in the table used by optimizer */
ha_rows used_stat_records;
/*
For each key that has quick_keys.is_set(key) == TRUE: estimate of #records
and max #key parts that range access would use.
@ -1258,6 +1277,7 @@ public:
bool update_const_key_parts(COND *conds);
uint actual_n_key_parts(KEY *keyinfo);
ulong actual_key_flags(KEY *keyinfo);
inline ha_rows stat_records() { return used_stat_records; }
};