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Code Activity

Enhancing both multi-table delete and division of LEX

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sql/filesort.cc:
  removing of some extra comments
sql/sql_class.h:
  Clear division between new and old stripping code
sql/sql_delete.cc:
  Stripping of unnecessary code and making it more efficient
sql/sql_parse.cc:
  Better split of LEX into two and enhancements in multi table delete
sql/sql_yacc.yy:
  More efficient division of LEX and optional syntax in multi - table delete
sql/uniques.cc:
  fixing some additional bugs
This commit is contained in:
unknown
2001-06-07 14:10:58 +03:00
parent 4e886689b2
commit 823586b2c7
6 changed files with 206 additions and 211 deletions
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60
sql/sql_class.h
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@@ -464,34 +464,6 @@ public:
void send_error(uint errcode,const char *err);
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:
TABLE *table;
@@ -619,3 +591,35 @@ public:
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);
};
class multi_delete : public select_result {
TABLE_LIST *delete_tables, *table_being_deleted;
#ifdef SINISAS_STRIP
IO_CACHE **tempfiles;
byte *memory_lane;
#else
Unique **tempfiles;
#endif
byte * dup_checking;
THD *thd;
ha_rows deleted;
int num_of_tables, error;
thr_lock_type lock_option;
bool do_delete;
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)
{
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();
};