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Merge aelkin@bk-internal.mysql.com:/home/bk/mysql-5.0

Browse source 
into  mysql.com:/usr_rh9/home/elkin.rh9/MySQL/Merge/5.0-bug19136


sql/sql_select.cc:
  Auto merged
This commit is contained in:
unknown 2006-05-07 20:03:08 +03:00
commit c438e4903c
3 changed files with 17 additions and 0 deletions
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1
mysql-test/r/rpl_user_variables.result
View file

@ -106,5 +106,6 @@ slave-bin.000001 # User var 2 # @`a`=5
slave-bin.000001 # Query 1 # use `test`; insert into t1 values (@a),(@a)
slave-bin.000001 # User var 2 # @`a`=NULL
slave-bin.000001 # Query 1 # use `test`; insert into t1 values (@a),(@a),(@a*5)
insert into t1 select * FROM (select @var1 union select @var2) AS t2;
drop table t1;
stop slave;

6
mysql-test/t/rpl_user_variables.test
View file

@ -48,9 +48,15 @@ sync_with_master;
select * from t1;
--replace_column 2 # 5 #
show binlog events from 98;
#
# BUG19136: Crashing log-bin and uninitialized user variables in a derived table
# just to check nothing bad happens anymore
#
connection master;
insert into t1 select * FROM (select @var1 union select @var2) AS t2;
drop table t1;
save_master_pos;
connection slave;
sync_with_master;
stop slave;

10
sql/item_func.cc
View file

@ -3946,14 +3946,24 @@ int get_var_with_binlog(THD *thd, enum_sql_command sql_command,
sql_set_variables(), we could instead manually call check() and update();
this would save memory and time; but calling sql_set_variables() makes
one unique place to maintain (sql_set_variables()).
Manipulation with lex is necessary since free_underlaid_joins
is going to release memory belonging to the main query.
*/
List<set_var_base> tmp_var_list;
LEX *sav_lex= thd->lex, lex_tmp;
thd->lex= &lex_tmp;
lex_start(thd, NULL, 0);
tmp_var_list.push_back(new set_var_user(new Item_func_set_user_var(name,
new Item_null())));
/* Create the variable */
if (sql_set_variables(thd, &tmp_var_list))
{
thd->lex= sav_lex;
goto err;
}
thd->lex= sav_lex;
if (!(var_entry= get_variable(&thd->user_vars, name, 0)))
goto err;
}