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Bug#5507: TRUNCATE does not work with views.

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Support of views wasn't implemented for the TRUNCATE statement.
Now TRUNCATE on views has the same semantics as DELETE FROM view:
mysql_truncate() checks whether the table is a view and falls back
to delete if so.
In order to initialize properly the LEX::updatable for a view
st_lex::can_use_merged() now allows usage of merged views for the
TRUNCATE statement.


mysql-test/r/truncate.result:
  Added a test case for the Bug#5507: TRUNCATE does not work with views.
mysql-test/t/truncate.test:
  Added a test case for the Bug#5507: TRUNCATE does not work with views.
sql/sql_lex.cc:
  Bug#5507: TRUNCATE does not work with views.
  can_use_merged() was denying of usage of merged views for a
  TRUNCATE statement. This results in improper initialization
  of view LEX::updatable. Fixed.
sql/sql_delete.cc:
  Bug#5507: TRUNCATE does not work with views.
  1.mysql_truncate() was lacking of check whether the table is view. Added.
  2.mysql_truncate() calls mysql_delete(), but mysql_delete() always reports
  errors as "DELETE" errors. Fixed.
mysql-test/t/view.test:
  Updated test case for Bug#14540: OPTIMIZE, ANALYZE, REPAIR applied 
  to not a view.
mysql-test/r/view.result:
  Updated test case for Bug#14540: OPTIMIZE, ANALYZE, REPAIR applied 
  to not a view.
This commit is contained in:
unknown
2007-04-12 23:21:37 +05:00
parent 2eaf8ac837
commit 0b54001b21
6 changed files with 78 additions and 3 deletions
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9
sql/sql_delete.cc
View File

@@ -369,6 +369,8 @@ bool mysql_prepare_delete(THD *thd, TABLE_LIST *table_list, Item **conds)
{
Item *fake_conds= 0;
SELECT_LEX *select_lex= &thd->lex->select_lex;
const char *operation = thd->lex->sql_command == SQLCOM_TRUNCATE ?
"TRUNCATE" : "DELETE";
DBUG_ENTER("mysql_prepare_delete");
List<Item> all_fields;
@@ -383,14 +385,14 @@ bool mysql_prepare_delete(THD *thd, TABLE_LIST *table_list, Item **conds)
DBUG_RETURN(TRUE);
if (!table_list->updatable || check_key_in_view(thd, table_list))
{
my_error(ER_NON_UPDATABLE_TABLE, MYF(0), table_list->alias, "DELETE");
my_error(ER_NON_UPDATABLE_TABLE, MYF(0), table_list->alias, operation);
DBUG_RETURN(TRUE);
}
{
TABLE_LIST *duplicate;
if ((duplicate= unique_table(thd, table_list, table_list->next_global, 0)))
{
update_non_unique_table_error(table_list, "DELETE", duplicate);
update_non_unique_table_error(table_list, operation, duplicate);
DBUG_RETURN(TRUE);
}
}
@@ -895,7 +897,8 @@ bool mysql_truncate(THD *thd, TABLE_LIST *table_list, bool dont_send_ok)
if (!dont_send_ok)
{
db_type table_type;
mysql_frm_type(thd, path, &table_type);
if (mysql_frm_type(thd, path, &table_type) == FRMTYPE_VIEW)
goto trunc_by_del;
if (table_type == DB_TYPE_UNKNOWN)
{
my_error(ER_NO_SUCH_TABLE, MYF(0),