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These are actually two changesets. One for splitting LEX in two and

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the other for multi-table delete
This commit is contained in:
Sinisa@sinisa.nasamreza.org
2001-06-03 17:07:26 +03:00
parent 73e6a69052
commit 338b51b5a7
14 changed files with 969 additions and 244 deletions
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37
sql/sql_class.h
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@ -465,6 +465,32 @@ public:
bool send_eof();
};
class multi_delete : public select_result {
TABLE_LIST *delete_tables, *table_being_deleted;
IO_CACHE **tempfiles;
thr_lock_type lock_option;
ulong deleted;
byte *dup_checking, wrong_record[MAX_REFLENGTH], *memory_lane;
int num_of_tables, error;
bool do_delete;
THD *thd;
public:
multi_delete(TABLE_LIST *dt, thr_lock_type o, uint n)
: delete_tables (dt), lock_option(o), deleted(0), num_of_tables(n), error(0)
{
memset(wrong_record,'\xFF',MAX_REFLENGTH);
thd = current_thd; do_delete = false;
}
~multi_delete();
int prepare(List<Item> &list);
bool send_fields(List<Item> &list,
uint flag) { return 0; }
bool send_data(List<Item> &items);
void send_error(uint errcode,const char *err);
int do_deletes (bool from_send_error);
bool send_eof();
};
class select_insert :public select_result {
protected:
@ -578,19 +604,18 @@ class Unique :public Sql_alloc
public:
ulong elements;
Unique(qsort_cmp2 comp_func, uint size, ulong max_in_memory_size_arg);
Unique(qsort_cmp2 comp_func, void * comp_func_fixed_arg,
uint size, ulong max_in_memory_size_arg);
~Unique();
inline bool Unique::unique_add(gptr ptr)
{
if (tree.elements_in_tree > max_elements && flush())
return 1;
return tree_insert(&tree,ptr,0);
return !tree_insert(&tree,ptr,0);
}
bool get(TABLE *table);
friend int unique_write_to_file(gptr key, Unique *unique,
element_count count);
friend int unique_write_to_ptrs(gptr key, Unique *unique,
element_count count);
friend int unique_write_to_file(gptr key, element_count count, Unique *unique);
friend int unique_write_to_ptrs(gptr key, element_count count, Unique *unique);
};