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Bug #21392: multi-table delete with alias table name fails with

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1003: Incorrect table name
in multi-table DELETE the set of tables to delete from actually 
references then tables in the other list, e.g:
DELETE alias_of_t1 FROM t1 alias_of_t1 WHERE ....
is a valid statement.
So we must turn off table name syntactical validity check for alias_of_t1 
because it's not a table name (even if it looks like one).
In order to do that we add a special flag (TL_OPTION_ALIAS) to 
disable the name checking for the aliases in multi-table DELETE.
This commit is contained in:
gkodinov/kgeorge@macbook.gmz
2006-09-04 18:40:30 +03:00
parent 13f50fdb69
commit 3758b975f8
5 changed files with 23 additions and 3 deletions
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4
sql/sql_parse.cc
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@@ -4863,6 +4863,7 @@ bool add_to_list(THD *thd, SQL_LIST &list,Item *item,bool asc)
table_options A set of the following bits:
TL_OPTION_UPDATING Table will be updated
TL_OPTION_FORCE_INDEX Force usage of index
TL_OPTION_ALIAS an alias in multi table DELETE
lock_type How table should be locked
use_index List of indexed used in USE INDEX
ignore_index List of indexed used in IGNORE INDEX
@@ -4888,7 +4889,8 @@ TABLE_LIST *st_select_lex::add_table_to_list(THD *thd,
if (!table)
DBUG_RETURN(0); // End of memory
alias_str= alias ? alias->str : table->table.str;
if (check_table_name(table->table.str,table->table.length) ||
if (!test(table_options & TL_OPTION_ALIAS) &&
check_table_name(table->table.str,table->table.length) ||
table->db.str && check_db_name(table->db.str))
{
net_printf(thd, ER_WRONG_TABLE_NAME, table->table.str);