use FORCE option when dropping database

try reuse existing database connection when switching users/databases

install extensions as superuser

use CREATE ROLE instead of CREATE USER

0_runAllScripts.sql

 \echo \conninfo
 \echo
-\echo -n 'client encoding: '\encoding
+\echo -n 'current client encoding: '\encoding
 \echo
 
 SET client_min_messages = ERROR;
-\set user anguser 
+\set user anguser
 \set password '\'angproj\''
 \set database angproj
 \set promptvar ''
 
-\prompt 'DROP USER [':user'] and DROP DATABASE [':database'] if existing (\\q or Ctrl-C to abort)?' promptvar
+\prompt 'DROP ROLE [':user'] and DROP DATABASE [':database'] if existing (\\q or Ctrl-C to abort)?' promptvar
 :promptvar
 
-DROP DATABASE if exists :database;
-DROP USER if exists :user;
+DROP DATABASE if exists :database (FORCE);
+DROP ROLE if exists :user;
 
 \echo -------------------------------------
-\echo passwort for user :user = :password
+\echo password for user :user = :password
 \echo -------------------------------------
 \echo
 
-\prompt 'CREATE USER [':user'] and DATABASE [':database'] (\\q or Ctrl-C to abort)?' promptvar
+\prompt 'CREATE ROLE [':user'] and DATABASE [':database'] (\\q or Ctrl-C to abort)?' promptvar
 :promptvar
 
-CREATE USER :user WITH PASSWORD :password;
-CREATE DATABASE :database WITH OWNER :user ENCODING 'UTF8';
-\c :database :user
+CREATE ROLE :user WITH LOGIN PASSWORD :password;
+CREATE DATABASE :database WITH OWNER=:user ENCODING='UTF8';
 
 -- specify encoding to match your files encoding, usually UTF8
 -- valid values are: 'UTF8', 'LATIN1', 'WIN1252'
 \encoding 'UTF8'
 
--- create extensions
+-- connect to DB as superuser
+\c -reuse-previous=on :database postgres
+
+-- install extensions
 \ir 1_extensions.sql
 
+-- connect to DB as owner
+\c -reuse-previous=on :database :user
+
 -- create schema
 \ir 2_schema.sql
 
@@ -60,4 +65,3 @@ CREATE DATABASE :database WITH OWNER :user ENCODING 'UTF8';
 \unset ECHO
 -- demonstrate constraints in action
 \ir 6_constraints_tests.sql
-