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Item character set is stored in Item itself now, not in ITem->str_value

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This commit is contained in:
bar@bar.mysql.r18.ru
2003-06-24 13:37:11 +05:00
parent f55db178a2
commit 8bd715daa4
3 changed files with 15 additions and 11 deletions
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4
sql/item.cc
View File

@ -39,7 +39,8 @@ Item::Item():
{
marker= 0;
maybe_null=null_value=with_sum_func=unsigned_flag=0;
coercibility=COER_COERCIBLE;
collation= &my_charset_bin;
coercibility= COER_COERCIBLE;
name= 0;
decimals= 0; max_length= 0;
THD *thd= current_thd;
@ -67,6 +68,7 @@ Item::Item(THD *thd, Item &item):
unsigned_flag(item.unsigned_flag),
with_sum_func(item.with_sum_func),
fixed(item.fixed),
collation(item.collation),
coercibility(item.coercibility)
{
next=thd->free_list; // Put in free list

18
sql/item.h
View File

@ -65,6 +65,7 @@ public:
my_bool unsigned_flag;
my_bool with_sum_func;
my_bool fixed; /* If item fixed with fix_fields */
CHARSET_INFO *collation; /* character set && collation */
enum coercion coercibility; /* Precedence order of collation */
// alloc & destruct is done as start of select using sql_alloc
@ -123,18 +124,17 @@ public:
virtual Item *real_item() { return this; }
virtual Item *get_tmp_table_item(THD *thd) { return copy_or_same(thd); }
virtual bool binary() const
{ return str_value.charset()->state & MY_CS_BINSORT ? 1 : 0 ; }
CHARSET_INFO *default_charset() const;
CHARSET_INFO *charset() const { return str_value.charset(); };
void set_charset(CHARSET_INFO *cs) { str_value.set_charset(cs); }
CHARSET_INFO *charset() const { return collation; };
void set_charset(CHARSET_INFO *cs)
{ collation= cs; }
void set_charset(CHARSET_INFO *cs, enum coercion coer)
{
str_value.set_charset(cs);
coercibility= coer;
}
{ collation= cs; coercibility= coer; }
bool set_charset(CHARSET_INFO *cs1, enum coercion co1,
CHARSET_INFO *cs2, enum coercion co2);
bool binary() const
{ return charset()->state & MY_CS_BINSORT ? 1 : 0 ; }
virtual void set_outer_resolving() {}
// Row emulation
@ -383,6 +383,7 @@ public:
Item_string(const char *str,uint length,
CHARSET_INFO *cs, enum coercion coer= COER_COERCIBLE)
{
set_charset(cs);
str_value.set(str,length,cs);
coercibility= coer;
max_length=length;
@ -392,6 +393,7 @@ public:
Item_string(const char *name_par, const char *str, uint length,
CHARSET_INFO *cs, enum coercion coer= COER_COERCIBLE)
{
set_charset(cs);
str_value.set(str,length,cs);
coercibility= coer;
max_length=length;

4
sql/sql_select.cc
View File

@ -4142,10 +4142,10 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
case STRING_RESULT:
if (item->max_length > 255)
new_field= new Field_blob(item->max_length,maybe_null,
item->name,table,item->str_value.charset());
item->name,table,item->charset());
else
new_field= new Field_string(item->max_length,maybe_null,
item->name,table,item->str_value.charset());
item->name,table,item->charset());
break;
case ROW_RESULT:
default: