database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

Fixed memory reference error when doing key_column <=> NULL on column that is defined as NOT NULL

Browse Source 
BUILD/FINISH.sh:
  Abort if one of configuration script fails
This commit is contained in:
unknown
2003-02-10 01:21:09 +02:00
parent 4cf749e6c4
commit c896662662
2 changed files with 7 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
sql/opt_range.cc
View File

@ -505,10 +505,11 @@ SEL_ARG *SEL_ARG::last()
return next_arg;
}
/*
Check if a compare is ok, when one takes ranges in account
Returns -2 or 2 if the ranges where 'joined' like < 2 and >= 2
*/
*/
static int sel_cmp(Field *field, char *a,char *b,uint8 a_flag,uint8 b_flag)
{
@ -1032,17 +1033,6 @@ get_mm_leaf(PARAM *param, Field *field, KEY_PART *key_part,
if (value->save_in_field(field, 1))
{
/* This happens when we try to insert a NULL field in a not null column */
// TODO; Check if we can we remove the following block.
if (type == Item_func::EQUAL_FUNC)
{
/* convert column_name <=> NULL -> column_name IS NULL */
// Get local copy of key
char *str= (char*) alloc_root(param->mem_root,1);
if (!str)
DBUG_RETURN(0);
*str= 1;
DBUG_RETURN(new SEL_ARG(field,str,str));
}
DBUG_RETURN(&null_element); // cmp with NULL is never true
}
// Get local copy of key