database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

Bug#21505 Create view - illegal mix of collation for operation 'UNION'

Browse Source 
The problem was that any VIEW columns had always implicit derivation.
  Fix: derivation is now copied from the original expression
  given in VIEW definition.
  For example:
  - a VIEW column which comes from a string constant
    in CREATE VIEW definition have now coercible derivation.
  - a VIEW column having COLLATE clause
    in CREATE VIEW definition have now explicit derivation.
This commit is contained in:
bar@mysql.com/bar.intranet.mysql.r18.ru
2006-11-09 14:41:34 +04:00
parent 9870d87f25
commit aa1c8a5826
8 changed files with 74 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
sql/sql_select.cc
View File

@ -8560,6 +8560,7 @@ static Field *create_tmp_field_from_item(THD *thd, Item *item, TABLE *table,
item->collation.collation);
else
new_field= item->make_string_field(table);
new_field->set_derivation(item->collation.derivation);
break;
case DECIMAL_RESULT:
new_field= new Field_new_decimal(item->max_length, maybe_null, item->name,
@ -8735,7 +8736,9 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
(make_copy_field ? 0 : copy_func),
modify_item, convert_blob_length);
case Item::TYPE_HOLDER:
return ((Item_type_holder *)item)->make_field_by_type(table);
result= ((Item_type_holder *)item)->make_field_by_type(table);
result->set_derivation(item->collation.derivation);
return result;
default: // Dosen't have to be stored
return 0;
}