diff options
Diffstat (limited to 'innobase/include/row0upd.h')
| -rw-r--r-- | innobase/include/row0upd.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/innobase/include/row0upd.h b/innobase/include/row0upd.h index 106d3866b25..9a3e2463267 100644 --- a/innobase/include/row0upd.h +++ b/innobase/include/row0upd.h @@ -312,6 +312,11 @@ struct upd_node_struct{ ibool in_mysql_interface; /* TRUE if the update node was created for the MySQL interface */ + upd_node_t* cascade_node;/* NULL or an update node template which + is used to implement ON DELETE CASCADE + or ... SET NULL for foreign keys */ + mem_heap_t* cascade_heap;/* NULL or a mem heap where the cascade + node is created */ sel_node_t* select; /* query graph subtree implementing a base table cursor: the rows returned will be updated */ @@ -322,6 +327,11 @@ struct upd_node_struct{ of the MySQL interface */ dict_table_t* table; /* table where updated */ upd_t* update; /* update vector for the row */ + ulint update_n_fields; + /* when this struct is used to implement + a cascade operation for foreign keys, we store + here the size of the buffer allocated for use + as the update vector */ sym_node_list_t columns;/* symbol table nodes for the columns to retrieve from the table */ ibool has_clust_rec_x_lock; |