Fixed bug in mysqlcheck when using --fast

Fixed problem when converting bigint to double.
Fixed bug in count(distinct null)
Fixed bug with empty BDB tables.

sql-bench/Comments/postgres.benchmark

@@ -11,24 +11,26 @@
 # Another time vacuum() filled our system disk with had 6G free
 # while vaccuming a table of 60 M.
 #
-# We have sent a mail about this to the PostgreSQL mailing list, so
-# the PostgreSQL developers should be aware of these problems and should
-# hopefully fix this soon.
-#
 # WARNING
 
 # The test was run on a Intel Xeon 2x 550 Mzh machine with 1G memory,
-# 9G hard disk.  The OS is Suse 7.1, with Linux 2.4.0 compiled with SMP
+# 9G hard disk.  The OS is Suse 7.1, with Linux 2.4.2 compiled with SMP
 # support
 # Both the perl client and the database server is run
 # on the same machine. No other cpu intensive process was used during
 # the benchmark.
+#
+# During the test we run PostgreSQL with -o -F, not async mode (not ACID safe)
+# because when we started postmaster without -o -F, PostgreSQL log files
+# filled up a 9G disk until postmaster crashed.
+# We did however notice that with -o -F, PostgreSQL was a magnitude slower
+# than when not using -o -F.
 
-# First, install postgresql-7.1.1.tar.gz
+#
+# First, install postgresql-7.1.2.tar.gz
 
 # Adding the following lines to your ~/.bash_profile or
 # corresponding file. If you are using csh, use <20>setenv<6E>.
-#
 
 export POSTGRES_INCLUDE=/usr/local/pg/include
 export POSTGRES_LIB=/usr/local/pg/lib
@@ -62,7 +64,7 @@ su - postgres
 exit
 
 #
-# Second, install packages DBD-Pg-1.00.tar.gz and DBI-1.14.tar.gz,
+# Second, install packages DBD-Pg-1.00.tar.gz and DBI-1.18.tar.gz,
 # available from http://www.perl.com/CPAN/
 
 export POSTGRES_LIB=/usr/local/pg/lib/
@@ -82,6 +84,7 @@ run-all-tests --comment="Intel Xeon, 2x550 Mhz, 512M, pg started with -o -F" --u
 
 # When running with --fast we run the following vacuum commands on
 # the database between each major update of the tables:
+# vacuum anlyze table
 # vacuum table
 # or
 # vacuum analyze