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sql/item_subselect.h:
  Auto merged
This commit is contained in:
unknown 2003-10-07 16:22:48 +03:00
commit fae46f7c9f
8 changed files with 71 additions and 52 deletions
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11
sql/item_subselect.h
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@ -243,6 +243,7 @@ public:
friend class subselect_indexsubquery_engine;
};
/* ALL/ANY/SOME subselect */
class Item_allany_subselect :public Item_in_subselect
{
@ -258,6 +259,7 @@ public:
trans_res select_transformer(JOIN *join);
};
class subselect_engine: public Sql_alloc
{
protected:
@ -292,6 +294,7 @@ public:
bool may_be_null() { return maybe_null; };
};
class subselect_single_select_engine: public subselect_engine
{
my_bool prepared; /* simple subselect is prepared */
@ -312,6 +315,7 @@ public:
void exclude();
};
class subselect_union_engine: public subselect_engine
{
st_select_lex_unit *unit; /* corresponding unit structure */
@ -328,6 +332,7 @@ public:
void exclude();
};
struct st_join_table;
class subselect_uniquesubquery_engine: public subselect_engine
{
@ -343,17 +348,17 @@ public:
{
set_thd(thd);
}
~subselect_uniquesubquery_engine();
int prepare();
void fix_length_and_dec(Item_cache** row);
int exec();
uint cols() { return 1; }
bool dependent() { return 1; }
bool uncacheable() { return 1; }
void exclude();
static int end_exec(TABLE *table);
void exclude();
};
class subselect_indexsubquery_engine: public subselect_uniquesubquery_engine
{
bool check_null;