database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

Manually merged (will need a post-merge fix)

Browse Source 
sql/sql_select.h:
  Auto merged
This commit is contained in:
unknown
2005-04-05 03:07:37 +04:00
parent f3aa7770b6 31f2f9bcf8
commit ed1f7d375e
2 changed files with 150 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
sql/sql_select.h
View File

@ -31,6 +31,11 @@ typedef struct keyuse_t {
uint key, keypart, optimize;
key_part_map keypart_map;
ha_rows ref_table_rows;
/*
If true, the comparison this value was created from will not be
satisfied if val has NULL 'value'.
*/
bool null_rejecting;
} KEYUSE;
class store_key;
@ -45,6 +50,11 @@ typedef struct st_table_ref
byte *key_buff2; // key_buff+key_length
store_key **key_copy; //
Item **items; // val()'s for each keypart
/*
(null_rejecting & (1<<i)) means the condition is '=' and no matching
rows will be produced if items[i] IS NULL (see add_not_null_conds())
*/
key_part_map null_rejecting;
table_map depend_map; // Table depends on these tables.
byte *null_ref_key; // null byte position in the key_buf.
// used for REF_OR_NULL optimization.