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Fix bug #13180 thd->allow_sum_funcs wasn't reset before query processing.

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thd->allow_sum_func was left 'true' after previous statement thus allowing
sum funcs to be present in conditions.

thd->allow_sum_func should be set to 0 for each query and each prepared
statement reinitialization. This is done in lex_start() and 
reset_stmt_for_execute().


sql/sql_lex.cc:
  Fix bug#13180 thd->allow_sum_func wasn't reset obefore query processing.
  thd->allow_sum_func is set to 0 in lex_start().
sql/sql_prepare.cc:
  Fix bug#13180 thd->allow_sum_func wasn't reset obefore query processing.
  thd->allow_sum_func is set to 0 in  reset_stmt_for_execute().
mysql-test/t/update.test:
  Test case for bug#13180 thd->allow_sum_funcs wasn't reset before query
  processing.
mysql-test/r/update.result:
  Test case for bug#13180 thd->allow_sum_funcs wasn't reset before query
  processing.
This commit is contained in:
unknown 2005-09-22 01:38:39 +04:00
parent 2a5505c7f6
commit 1b02a815dd
4 changed files with 26 additions and 0 deletions
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12
mysql-test/r/update.result
View file

@ -251,3 +251,15 @@ f1 f2
1 1
2 2
drop table t1,t2;
create table t1(f1 int);
select DATABASE();
DATABASE()
test
update t1 set f1=1 where count(*)=1;
ERROR HY000: Invalid use of group function
select DATABASE();
DATABASE()
test
delete from t1 where count(*)=1;
ERROR HY000: Invalid use of group function
drop table t1;

12
mysql-test/t/update.test
View file

@ -215,4 +215,16 @@ UPDATE t1 SET t1.f2=(SELECT MAX(t2.f4) FROM t2 WHERE t2.f3=t1.f1);
select * from t1;
drop table t1,t2;
#
# Bug #13180 sometimes server accepts sum func in update/delete where condition
#
create table t1(f1 int);
select DATABASE();
--error 1111
update t1 set f1=1 where count(*)=1;
select DATABASE();
--error 1111
delete from t1 where count(*)=1;
drop table t1;
# End of 4.1 tests

1
sql/sql_lex.cc
View file

@ -160,6 +160,7 @@ void lex_start(THD *thd, uchar *buf,uint length)
lex->duplicates= DUP_ERROR;
lex->ignore= 0;
lex->proc_list.first= 0;
thd->allow_sum_func= 0;
}
void lex_end(LEX *lex)

1
sql/sql_prepare.cc
View file

@ -1738,6 +1738,7 @@ static void reset_stmt_for_execute(Prepared_statement *stmt)
lex->current_select= &lex->select_lex;
if (lex->result)
lex->result->cleanup();
thd->allow_sum_func= 0;
}