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Bug #6658 MAX(column) returns incorrect coercibility

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Also, Item_sum_hybrid->charset was removed as redundant,
and switched to use collation.collation instead.


mysql-test/r/func_group.result:
  Bug #6658 MAX(column) returns incorrect coercibility
mysql-test/r/func_str.result:
  Bug #6658 MAX(column) returns incorrect coercibility
mysql-test/t/func_group.test:
  Bug #6658 MAX(column) returns incorrect coercibility
sql/item_func.cc:
  Bug #6658 MAX(column) returns incorrect coercibility
sql/item_sum.cc:
  Bug #6658 MAX(column) returns incorrect coercibility
sql/item_sum.h:
  Bug #6658 MAX(column) returns incorrect coercibility
This commit is contained in:
unknown
2004-11-19 19:35:36 +04:00
parent 77c163c3e3
commit aa6785d7a8
6 changed files with 48 additions and 12 deletions
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9
sql/item_sum.h
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@ -402,20 +402,19 @@ class Item_sum_hybrid :public Item_sum
enum_field_types hybrid_field_type;
int cmp_sign;
table_map used_table_cache;
CHARSET_INFO *cmp_charset;
public:
Item_sum_hybrid(Item *item_par,int sign)
:Item_sum(item_par), sum(0.0), sum_int(0),
hybrid_type(INT_RESULT), hybrid_field_type(FIELD_TYPE_LONGLONG),
cmp_sign(sign), used_table_cache(~(table_map) 0),
cmp_charset(&my_charset_bin)
{}
cmp_sign(sign), used_table_cache(~(table_map) 0)
{ collation.set(&my_charset_bin); }
Item_sum_hybrid(THD *thd, Item_sum_hybrid *item):
Item_sum(thd, item), value(item->value),
sum(item->sum), sum_int(item->sum_int), hybrid_type(item->hybrid_type),
hybrid_field_type(item->hybrid_field_type),cmp_sign(item->cmp_sign),
used_table_cache(item->used_table_cache), cmp_charset(item->cmp_charset) {}
used_table_cache(item->used_table_cache)
{ collation.set(item->collation); }
bool fix_fields(THD *, TABLE_LIST *, Item **);
table_map used_tables() const { return used_table_cache; }
bool const_item() const { return !used_table_cache; }