PostgreSQL - added equivalent of the MySQL-specific rebuilddb.sh script, for upgrading

scripts/rebuilddb_psql.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+#
+# ******************************* WARNING *********************************
+# Do not run this script until you have read and understood the information
+# below, AND backed up your database. Failure to observe these instructions
+# may result in losing all the data in your database.
+#
+# This script is used to upgrade Laconica's PostgreSQL database to the
+# latest version. It does the following:
+# 
+#  1. Dumps the existing data to /tmp/rebuilddb_psql.sql
+#  2. Clears out the objects (tables, etc) in the database schema
+#  3. Reconstructs the database schema using the latest script
+#  4. Restores the data dumped in step 1
+#
+# You MUST run this script as the 'postgres' user.
+# You MUST be able to write to /tmp/rebuilddb_psql.sql
+# You MUST specify the laconica database user and database name on the
+# command line, e.g. ./rebuilddb_psql.sh myuser mydbname
+#
+
+user=$1
+DB=$2
+
+cd `dirname $0`
+
+pg_dump -a -D --disable-trigger $DB > /tmp/rebuilddb_psql.sql
+psql -c "drop schema public cascade; create schema public;" $DB
+psql -c "grant all privileges on schema public to $user;" $DB
+psql $DB < ../db/laconica_pg.sql
+psql $DB < /tmp/rebuilddb_psql.sql
+for tab in `psql -c '\dts' $DB -tA | cut -d\| -f2`; do
+  psql -c "ALTER TABLE \"$tab\" OWNER TO $user;" $DB
+done