First stage of table definition cache

Split TABLE to TABLE and TABLE_SHARE (TABLE_SHARE is still allocated as part of table, will be fixed soon)
Created Field::make_field() and made Field_num::make_field() to call this
Added 'TABLE_SHARE->db' that points to database name; Changed all usage of table_cache_key as database name to use this instead
Changed field->table_name to point to pointer to alias. This allows us to change alias for a table by just updating one pointer.
Renamed TABLE_SHARE->real_name to table_name
Renamed TABLE->table_name to alias
Renamed TABLE_LIST->real_name to table_name

1 files changed, 3 insertions, 3 deletions

diff --git a/sql/sql_derived.cc b/sql/sql_derived.cc
index 520393f8544..bed65f90c00 100644
--- a/sql/sql_derived.cc
+++ b/sql/sql_derived.cc
@@ -147,7 +147,7 @@ exit:
       {
         thd->clear_error();
         my_error(ER_VIEW_INVALID, MYF(0), orig_table_list->db,
-                 orig_table_list->real_name);
+                 orig_table_list->table_name);
       }
     }
 
@@ -168,9 +168,9 @@ exit:
 	delete derived_result;
       orig_table_list->derived_result= derived_result;
       orig_table_list->table= table;
-      orig_table_list->real_name= table->real_name;
+      orig_table_list->table_name= (char*) table->s->table_name;
       table->derived_select_number= first_select->select_number;
-      table->tmp_table= TMP_TABLE;
+      table->s->tmp_table= TMP_TABLE;
 #ifndef NO_EMBEDDED_ACCESS_CHECKS
       table->grant.privilege= SELECT_ACL;
 #endif