diff options
Diffstat (limited to 'sql/table.h')
| -rw-r--r-- | sql/table.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sql/table.h b/sql/table.h index cb53013cd59..653d04b149e 100644 --- a/sql/table.h +++ b/sql/table.h @@ -361,7 +361,9 @@ typedef struct st_table_share } enum row_type row_type; /* How rows are stored */ enum tmp_table_type tmp_table; + /** Transactional or not. Unused; reserved for future versions. */ enum ha_choice transactional; + /** Per-page checksums or not. Unused; reserved for future versions. */ enum ha_choice page_checksum; uint ref_count; /* How many TABLE objects uses this */ @@ -753,7 +755,13 @@ struct st_table { */ my_bool force_index; my_bool distinct,const_table,no_rows; - my_bool key_read, no_keyread; + + /** + If set, the optimizer has found that row retrieval should access index + tree only. + */ + my_bool key_read; + my_bool no_keyread; /* Placeholder for an open table which prevents other connections from taking name-locks on this table. Typically used with |