Fix empty database schema (#910)

Signed-off-by: Anja Strunk <[email protected]>
Signed-off-by: Matthias Büchse <[email protected]>
Co-authored-by: Matthias Büchse <[email protected]>

Author: anjastrunk

compliance-monitor/sql.py

@@ -170,8 +170,12 @@ def db_get_schema_version(cur: cursor):
 
 def db_set_schema_version(cur: cursor, version: str):
     cur.execute('''
-    UPDATE meta SET value = %s WHERE key = %s
-    ;''', (version, SCHEMA_VERSION_KEY))
+    INSERT INTO meta (key, value)
+    VALUES (%s, %s)
+    ON CONFLICT (key)
+    DO UPDATE
+    SET value = EXCLUDED.value
+    ;''', (SCHEMA_VERSION_KEY, version))
 
 
 def db_upgrade_schema(conn: connection, cur: cursor):