Moved files.

Author: bmomjian

doc/1.0_to_1.01.sql renamed to doc/MIGRATION_1.0_to_1.01

@@ -1,3 +1,53 @@
+The following notes are for the benefit of users who want to migrate
+databases from postgres95 1.0 to postgres95 1.01.  
+
+If you are starting afresh with postgres95 1.01 and do not need
+to migrate old databases, you do not need to read any further.
+
+----------------------------------------------------------------------
+
+In order to postgres95 version 1.01 with databases created with
+postgres95 version 1.0, the following steps are required:  
+
+1) Set the definition of NAMEDATALEN in src/Makefile.global to 16
+   and OIDNAMELEN to 20.
+
+2) Decide whether you want to use Host based authentication.  
+
+   A) If you do, you must create a file name "pg_hba" in your top-level data
+   directory (typically the value of your $PGDATA).  src/libpq/pg_hba
+   shows an example syntax.
+
+   B) If you do not want host-based authentication, you can comment out
+   the line
+	HBA = 1
+   in src/Makefile.global
+
+   Note that host-based authentication is turned on by default, and if
+   you do not take steps A or B above, the out-of-the-box 1.01 will
+   not allow you to connect to 1.0 databases.
+
+3) compile and install 1.01, but DO NOT do the initdb step.
+
+4) before doing anything else, terminate your 1.0 postmaster, and
+   backup your existing $PGDATA directory.   
+
+5) set your PGDATA environment variable to your 1.0 databases, but set up
+   path up so that 1.01 binaries are being used.
+
+6) modify the file $PGDATA/PG_VERSION from 5.0 to 5.1
+
+7) start up a new 1.01 postmaster
+
+5) Add the new built-in functions and operators of 1.01 to 1.0
+   databases.  This is done by running the new 1.01 server against
+   your own 1.0 database and applying the queries attached and saving 
+   in the file 1.0_to_1.01.sql.   This can be done easily through psql.
+   If your 1.0 database is name "testdb":
+
+	% psql testdb -f 1.0_to_1.01.sql
+
+------------------------------------------------------------------------------
 -- add builtin functions that are new to 1.01
 
 create function int4eqoid (int4, oid) returns bool as 'foo'