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Fixes during review of new pushed code:

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Remove wrong fix for Bug#14397 - OPTIMIZE TABLE with an open HANDLER causes a crash
Safety fix for bug #13855 "select distinct with group by caused server crash"


client/mysqlimport.c:
  Remove not used variable
myisam/myisam_ftdump.c:
  Fixed compiler warning
sql/item_cmpfunc.cc:
  Removed compiler warning
sql/sql_handler.cc:
  Remove wrong fix for Bug#14397 - OPTIMIZE TABLE with an open HANDLER causes a crash.
  It's better to let mysql_lock_tables reopen the TABLE object in case of OPTIMIZE TABLE and fix items AFTER mysql_lock_table() instead of before
sql/sql_select.cc:
  Safety fix for bug #13855 "select distinct with group by caused server crash"
  The previous patch only removed the symptomps, this fix removed the cause of the problem
  (Which was that not all hidden_fields was stored in the temporary table)
This commit is contained in:
unknown
2006-01-06 21:42:17 +02:00
parent 409a472905
commit 2dcedd9cbc
5 changed files with 22 additions and 38 deletions
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9
sql/sql_select.cc
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@ -4082,7 +4082,14 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
*(reg_field++) =new_field;
}
if (!--hidden_field_count)
{
hidden_null_count=null_count;
/*
We need to update hidden_field_count as we may have stored group
functions with constant arguments
*/
param->hidden_field_count= (uint) (reg_field - table->field);
}
}
DBUG_ASSERT(field_count >= (uint) (reg_field - table->field));
field_count= (uint) (reg_field - table->field);
@ -4270,7 +4277,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
}
}
if (distinct)
if (distinct && field_count != param->hidden_field_count)
{
/*
Create an unique key or an unique constraint over all columns