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Merge eagle.mysql.r18.ru:/home/vva/work/mysql.orig/clear/mysql-4.0

Browse source 
into eagle.mysql.r18.ru:/home/vva/work/BUG_1194/mysql-4.0
This commit is contained in:
vva@eagle.mysql.r18.ru 2003-10-01 12:22:30 -04:00
commit 14a2466532
4 changed files with 119 additions and 26 deletions
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32
mysql-test/r/user_var.result
View file

@ -42,3 +42,35 @@ select @a:=10, @b:=2, @a > @b, @a < @b;
select @a:="10", @b:="2", @a > @b, @a < @b;
@a:="10" @b:="2" @a > @b @a < @b
10 2 0 1
select @a:=1;
@a:=1
1
select @a, @a:=1;
@a @a:=1
1 1
create table t1 (id int);
insert into t1 values (1);
select @c:=0;
@c:=0
0
update t1 SET id=(@c:=@c+1);
select @c;
@c
1
select @c:=0;
@c:=0
0
update t1 set id=(@c:=@c+1);
select @c;
@c
1
select @c:=0;
@c:=0
0
select @c:=@c+1;
@c:=@c+1
1
drop table t1;
select @a:=10, @b:=2, @a>@b, @a:="10", @b:="2", @a>@b, @a:=10, @b:=2, @a>@b, @a:="10", @b:="2", @a>@b;
@a:=10 @b:=2 @a>@b @a:="10" @b:="2" @a>@b @a:=10 @b:=2 @a>@b @a:="10" @b:="2" @a>@b
10 2 1 10 2 0 10 2 1 10 2 0

19
mysql-test/t/user_var.test
View file

@ -23,3 +23,22 @@ select @a:=10, @b:=1, @a > @b, @a < @b;
select @a:="10", @b:="1", @a > @b, @a < @b;
select @a:=10, @b:=2, @a > @b, @a < @b;
select @a:="10", @b:="2", @a > @b, @a < @b;
# Fixed bug #1194
select @a:=1;
select @a, @a:=1;
create table t1 (id int);
insert into t1 values (1);
select @c:=0;
update t1 SET id=(@c:=@c+1);
select @c;
select @c:=0;
update t1 set id=(@c:=@c+1);
select @c;
select @c:=0;
select @c:=@c+1;
drop table t1;
# just fof fun :)
select @a:=10, @b:=2, @a>@b, @a:="10", @b:="2", @a>@b, @a:=10, @b:=2, @a>@b, @a:="10", @b:="2", @a>@b;

62
sql/item_func.cc
View file

@ -1899,52 +1899,61 @@ void Item_func_set_user_var::update_hash(void *ptr, uint length,
return;
}
bool
Item_func_set_user_var::update()
{
DBUG_ENTER("Item_func_set_user_var::update");
switch (cached_result_type) {
case REAL_RESULT:
(void) val();
break;
case INT_RESULT:
(void) val_int();
break;
case STRING_RESULT:
char buffer[MAX_FIELD_WIDTH];
String tmp(buffer,sizeof(buffer));
(void) val_str(&tmp);
break;
case REAL_RESULT: (void)native_val(); break;
case INT_RESULT: (void)native_val_int(); break;
case STRING_RESULT: (void)native_val_str(); break;
}
return current_thd->fatal_error;
DBUG_RETURN(current_thd->fatal_error);
}
double
Item_func_set_user_var::val()
{
double value=args[0]->val();
update_hash((void*) &value,sizeof(value), REAL_RESULT);
return value;
DBUG_ENTER("Item_func_set_user_var::val");
switch (cached_result_type) {
case REAL_RESULT: return native_val(); break;
case INT_RESULT: return native_val_int(); break;
case STRING_RESULT:
{
String *res= native_val_str();
return !res ? 0 : atof(res->c_ptr());
}
}
DBUG_RETURN(args[0]->val());
}
longlong
Item_func_set_user_var::val_int()
{
longlong value=args[0]->val_int();
update_hash((void*) &value,sizeof(longlong),INT_RESULT);
return value;
DBUG_ENTER("Item_func_set_user_var::val_int");
switch (cached_result_type) {
case REAL_RESULT: return (longlong)native_val(); break;
case INT_RESULT: return native_val_int(); break;
case STRING_RESULT:
{
String *res= native_val_str();
return !res ? 0 : strtoull(res->c_ptr(),NULL,10);
}
}
DBUG_RETURN(args[0]->val_int());
}
String *
Item_func_set_user_var::val_str(String *str)
{
String *res=args[0]->val_str(str);
if (!res) // Null value
update_hash((void*) 0,0,STRING_RESULT);
else
update_hash(res->c_ptr(),res->length()+1,STRING_RESULT);
return res;
DBUG_ENTER("Item_func_set_user_var::val_str");
switch (cached_result_type) {
case REAL_RESULT: str->set(native_val(),decimals); break;
case INT_RESULT: str->set(native_val_int(),decimals); break;
case STRING_RESULT: str= native_val_str(str); break;
}
DBUG_RETURN(str);
}
@ -1973,6 +1982,7 @@ user_var_entry *Item_func_get_user_var::get_entry()
String *
Item_func_get_user_var::val_str(String *str)
{
DBUG_ENTER("Item_func_get_user_var::val_str");
user_var_entry *entry=get_entry();
if (!entry)
return NULL;
@ -1991,7 +2001,7 @@ Item_func_get_user_var::val_str(String *str)
}
break;
}
return str;
DBUG_RETURN(str);
}

32
sql/item_func.h
View file

@ -889,6 +889,38 @@ class Item_func_set_user_var :public Item_func
LEX_STRING name;
user_var_entry *entry;
double native_val()
{
double value=args[0]->val();
update_hash((void*) &value,sizeof(value), REAL_RESULT);
return value;
}
longlong native_val_int()
{
longlong value=args[0]->val_int();
update_hash((void*) &value,sizeof(longlong),INT_RESULT);
return value;
}
String *native_val_str(String *str)
{
char buffer[MAX_FIELD_WIDTH];
String *res=args[0]->val_str(str);
if (!res) // Null value
update_hash((void*) 0,0,STRING_RESULT);
else
update_hash(res->c_ptr(),res->length()+1,STRING_RESULT);
return res;
}
String *native_val_str()
{
char buffer[MAX_FIELD_WIDTH];
String tmp(buffer,sizeof(buffer));
return native_val_str(&tmp);
}
public:
Item_func_set_user_var(LEX_STRING a,Item *b): Item_func(b), name(a) {}
double val();