diff options
Diffstat (limited to 'sql/table.cc')
| -rw-r--r-- | sql/table.cc | 37 |
1 files changed, 29 insertions, 8 deletions
diff --git a/sql/table.cc b/sql/table.cc index 40304dc6fdc..b8161093e9a 100644 --- a/sql/table.cc +++ b/sql/table.cc @@ -1439,25 +1439,33 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head, { /* Get virtual column data stored in the .frm file as follows: - byte 1 = 1 (always 1 to allow for future extensions) + byte 1 = 1 | 2 byte 2 = sql_type byte 3 = flags (as of now, 0 - no flags, 1 - field is physically stored) - byte 4-... = virtual column expression (text data) + [byte 4] = optional interval_id for sql_type (only if byte 1 == 2) + next byte ... = virtual column expression (text data) */ vcol_info= new Virtual_column_info(); - if ((uint)vcol_screen_pos[0] != 1) + bool opt_interval_id= (uint)vcol_screen_pos[0] == 2; + field_type= (enum_field_types) (uchar) vcol_screen_pos[1]; + if (opt_interval_id) + interval_nr= (uint)vcol_screen_pos[3]; + else if ((uint)vcol_screen_pos[0] != 1) { error= 4; goto err; } - field_type= (enum_field_types) (uchar) vcol_screen_pos[1]; fld_stored_in_db= (bool) (uint) vcol_screen_pos[2]; - vcol_expr_length= vcol_info_length-(uint)FRM_VCOL_HEADER_SIZE; + vcol_expr_length= vcol_info_length - + (uint)(FRM_VCOL_HEADER_SIZE(opt_interval_id)); if (!(vcol_info->expr_str.str= (char *)memdup_root(&share->mem_root, - vcol_screen_pos+(uint)FRM_VCOL_HEADER_SIZE, + vcol_screen_pos + + (uint) FRM_VCOL_HEADER_SIZE(opt_interval_id), vcol_expr_length))) goto err; + if (opt_interval_id) + interval_nr= (uint) vcol_screen_pos[3]; vcol_info->expr_str.length= vcol_expr_length; vcol_screen_pos+= vcol_info_length; share->vfields++; @@ -4536,7 +4544,14 @@ bool TABLE_LIST::check_single_table(TABLE_LIST **table_arg, tbl; tbl= tbl->next_local) { - if (tbl->table) + /* + Merged view has also temporary table attached (in 5.2 if it has table + then it was real table), so we have filter such temporary tables out + by checking that it is not merged view + */ + if (tbl->table && + !(tbl->is_view() && + tbl->is_merged_derived())) { if (tbl->table->map & map) { @@ -5985,7 +6000,13 @@ void TABLE::use_index(int key_to_save) bool TABLE::is_filled_at_execution() { - return test(pos_in_table_list->jtbm_subselect || + /* + pos_in_table_list == NULL for internal temporary tables because they + do not have a corresponding table reference. Such tables are filled + during execution. + */ + return test(!pos_in_table_list || + pos_in_table_list->jtbm_subselect || pos_in_table_list->is_active_sjm()); } |