diff options
Diffstat (limited to 'sql/sql_table.cc')
| -rw-r--r-- | sql/sql_table.cc | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/sql/sql_table.cc b/sql/sql_table.cc index ce4839fc580..a6bfcc2bbd0 100644 --- a/sql/sql_table.cc +++ b/sql/sql_table.cc @@ -6752,7 +6752,7 @@ mysql_prepare_alter_table(THD *thd, TABLE *table, List<Key_part_spec> key_parts; uint db_create_options= (table->s->db_create_options & ~(HA_OPTION_PACK_RECORD)); - uint used_fields= create_info->used_fields; + uint used_fields; KEY *key_info=table->key_info; bool rc= TRUE; bool modified_primary_key= FALSE; @@ -6760,6 +6760,14 @@ mysql_prepare_alter_table(THD *thd, TABLE *table, Field **f_ptr,*field; DBUG_ENTER("mysql_prepare_alter_table"); + /* + Merge incompatible changes flag in case of upgrade of a table from an + old MariaDB or MySQL version. This ensures that we don't try to do an + online alter table if field packing or character set changes are required. + */ + create_info->used_fields|= table->s->incompatible_version; + used_fields= create_info->used_fields; + create_info->varchar= FALSE; /* Let new create options override the old ones */ if (!(used_fields & HA_CREATE_USED_MIN_ROWS)) @@ -7744,8 +7752,11 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name, DEBUG_SYNC(thd, "alter_table_before_open_tables"); uint tables_opened; + + thd->open_options|= HA_OPEN_FOR_ALTER; bool error= open_tables(thd, &table_list, &tables_opened, 0, &alter_prelocking_strategy); + thd->open_options&= ~HA_OPEN_FOR_ALTER; DEBUG_SYNC(thd, "alter_opened_table"); |