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fixed bug in string & date types with group function in subselect

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mysql-test/r/subselect.result:
  test suite of string & date types with group function in subselects
mysql-test/t/subselect.test:
  test suite of string & date types with group function in subselects
sql/item_subselect.cc:
  fixed bug in string type with group function
sql/item_subselect.h:
  fixed bug in string type with group function
sql/sql_class.cc:
  fixed bug in date type with group function
This commit is contained in:
unknown 2002-09-28 18:34:56 +03:00
commit c9a2b58986
5 changed files with 91 additions and 5 deletions
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12
sql/item_subselect.h
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@ -61,6 +61,7 @@ public:
bool is_null() { return null_value; }
void make_field (Send_field *);
bool fix_fields(THD *thd, TABLE_LIST *tables, Item **ref);
virtual void fix_length_and_dec();
table_map used_tables() const;
friend class select_subselect;
@ -100,7 +101,7 @@ public:
String *val_str (String *);
Item *new_item() { return new Item_singleval_subselect(this); }
enum Item_result result_type() const { return res_type; }
void fix_length_and_dec();
friend class select_singleval_subselect;
};
@ -128,7 +129,7 @@ public:
longlong val_int();
double val();
String *val_str(String*);
void fix_length_and_dec();
friend class select_exists_subselect;
};
@ -138,6 +139,7 @@ protected:
select_subselect *result; /* results storage class */
THD *thd; /* pointer to current THD */
Item_subselect *item; /* item, that use this engine */
enum Item_result res_type; /* type of results */
public:
static void *operator new(size_t size)
{
@ -150,11 +152,15 @@ public:
result= res;
item= si;
this->thd= thd;
res_type= STRING_RESULT;
}
virtual int prepare()= 0;
virtual void fix_length_and_dec()= 0;
virtual int exec()= 0;
virtual uint cols()= 0; /* return number of columnss in select */
virtual bool depended()= 0; /* depended from outer select */
enum Item_result type() { return res_type; }
};
class subselect_single_select_engine: public subselect_engine
@ -168,6 +174,7 @@ public:
select_subselect *result,
Item_subselect *item);
virtual int prepare();
virtual void fix_length_and_dec();
virtual int exec();
virtual uint cols();
virtual bool depended();
@ -182,6 +189,7 @@ public:
select_subselect *result,
Item_subselect *item);
virtual int prepare();
virtual void fix_length_and_dec();
virtual int exec();
virtual uint cols();
virtual bool depended();