diff options
Diffstat (limited to 'sql/sql_base.cc')
| -rw-r--r-- | sql/sql_base.cc | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/sql/sql_base.cc b/sql/sql_base.cc index 18ffdc9e174..2b41b780ad6 100644 --- a/sql/sql_base.cc +++ b/sql/sql_base.cc @@ -1087,7 +1087,11 @@ TABLE_LIST* find_dup_table(THD *thd, TABLE_LIST *table, TABLE_LIST *table_list, (table->table equal to 0) and right names is in current TABLE_LIST object. */ - if (table->table) + if (table->table && + thd->lex->sql_command != SQLCOM_UPDATE && + thd->lex->sql_command != SQLCOM_UPDATE_MULTI && + thd->lex->sql_command != SQLCOM_DELETE && + thd->lex->sql_command != SQLCOM_DELETE_MULTI) { /* All MyISAMMRG children are plain MyISAM tables. */ DBUG_ASSERT(table->table->file->ht->db_type != DB_TYPE_MRG_MYISAM); @@ -5675,6 +5679,28 @@ bool open_tables_only_view_structure(THD *thd, TABLE_LIST *table_list, } +bool open_tables_for_query(THD *thd, TABLE_LIST *tables, + uint *table_count, uint flags, + DML_prelocking_strategy *prelocking_strategy) +{ + MDL_savepoint mdl_savepoint = thd->mdl_context.mdl_savepoint(); + + DBUG_ASSERT(tables == thd->lex->query_tables); + + if (open_tables(thd, &tables, table_count, + thd->stmt_arena->is_stmt_prepare() ? MYSQL_OPEN_FORCE_SHARED_MDL : 0, + prelocking_strategy)) + { + close_thread_tables(thd); + /* Don't keep locks for a failed statement. */ + thd->mdl_context.rollback_to_savepoint(mdl_savepoint); + return true; + } + + return false; +} + + /* Mark all real tables in the list as free for reuse. @@ -7818,6 +7844,9 @@ int setup_wild(THD *thd, TABLE_LIST *tables, List<Item> &fields, if (!select_lex->with_wild) DBUG_RETURN(0); + if (!fields.elements) + DBUG_RETURN(0); + /* Don't use arena if we are not in prepared statements or stored procedures For PS/SP we have to use arena to remember the changes @@ -8120,7 +8149,7 @@ bool setup_tables(THD *thd, Name_resolution_context *context, while ((table_list= ti++)) { TABLE *table= table_list->table; - if (table) + if (table && !table->pos_in_table_list) table->pos_in_table_list= table_list; if (first_select_table && table_list->top_table() == first_select_table) @@ -8136,7 +8165,6 @@ bool setup_tables(THD *thd, Name_resolution_context *context, } else if (table) { - table->pos_in_table_list= table_list; setup_table_map(table, table_list, tablenr); if (table_list->process_index_hints(table)) |