Additional storage engine called "blackhole". Customer request, and for that matter a Zawodny request. With this you can alter table to a type of table that would never store data. Its a /dev/null for a database.

acinclude.m4:
  New macro rule for ha_blackhole.
configure.in:
  Rule enabling blackhole engine
sql/Makefile.am:
  Additions to Makefile for blackhole engine
sql/handler.cc:
  Ifdef enable code for blackhole (and message for "what does this thing do").
sql/handler.h:
  Flag for storage engine type.
sql/mysql_priv.h:
  Added blackhole type.
sql/mysqld.cc:
  Updates for building backhole.
sql/set_var.cc:
  Show variable for blackhole engine

1 files changed, 1 insertions, 0 deletions

diff --git a/sql/handler.h b/sql/handler.h
index 0426312f404..d78c625005b 100644
--- a/sql/handler.h
+++ b/sql/handler.h
@@ -150,6 +150,7 @@ enum db_type
   DB_TYPE_BERKELEY_DB, DB_TYPE_INNODB, 
   DB_TYPE_GEMINI, DB_TYPE_NDBCLUSTER,
   DB_TYPE_EXAMPLE_DB, DB_TYPE_ARCHIVE_DB, DB_TYPE_CSV_DB,
+  DB_TYPE_BLACKHOLE_DB,
 	       
   DB_TYPE_DEFAULT // Must be last
 };