diff options
| -rw-r--r-- | sql/sql_select.cc | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 266b542a7ba..b35d53c0950 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -23361,6 +23361,26 @@ void JOIN_TAB::save_explain_data(Explain_table_access *eta, table_map prefix_tab else { TABLE_LIST *real_table= table->pos_in_table_list; + /* + When multi-table UPDATE/DELETE does updates/deletes to a VIEW, the view + is merged in a certain particular way (grep for DT_MERGE_FOR_INSERT). + + As a result, view's underlying tables have $tbl->pos_in_table_list={view}. + We don't want to print view name in EXPLAIN, we want underlying table's + alias (like specified in the view definition). + */ + if (real_table->merged_for_insert) + { + TABLE_LIST *view_child= real_table->view->select_lex.table_list.first; + for (;view_child; view_child= view_child->next_local) + { + if (view_child->table == table) + { + real_table= view_child; + break; + } + } + } eta->table_name.copy(real_table->alias, strlen(real_table->alias), cs); } |