From 2c5c2d203462f69e159ddd96428d6198673647c4 Mon Sep 17 00:00:00 2001
From: Rikard Bartholf <rikard@bartholf.nu>
Date: Wed, 17 Feb 2016 15:11:11 +0100
Subject: [PATCH] Automatically create control table if it doesn't exists

---
 README.md  | 11 -----------
 db-upgrade | 11 +++++++++++
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/README.md b/README.md
index e9dce6b..551d25c 100644
--- a/README.md
+++ b/README.md
@@ -58,17 +58,6 @@ alter table users
 add email varchar(256) not null;
 ```
 
-#### Prerequisites
-One table needs to be created for the database to make this work:
-
-```
-CREATE TABLE database_versions (
-  version varchar(32) not null,
-  is_active boolean not null default false,
-  creation_date timestamp not null default current_timestamp
-);
-```
-
 To do the actual migration, then just run:
 ```
 # ./db-upgrade [ENVIRONMENT NAME]
diff --git a/db-upgrade b/db-upgrade
index c88a855..b3deb1b 100755
--- a/db-upgrade
+++ b/db-upgrade
@@ -8,6 +8,17 @@ fi
 
 source env/$DB_ENVIRONMENT.conf
 
+# Create the control table, if it doesn't exist
+cat <<-EOF | psql $PSQL_OPTS -d $DB_NAME
+BEGIN;
+CREATE TABLE IF NOT EXISTS database_versions (
+  version varchar(32) not null,
+  is_active boolean not null default false,
+  creation_date timestamp not null default current_timestamp
+);
+END;
+EOF
+
 function add-version() {
   psql $PSQL_OPTS -c "update database_versions set is_active = false where is_active = true" $DB_NAME
   psql $PSQL_OPTS -c "insert into database_versions (version, is_active) values ('$1', TRUE)" $DB_NAME