sql: do not try fixing empty sequences

2013-06-12 22:44:28 +02:00 · 2013-06-12 22:44:28 +02:00 · 1c15b65dd7
parent 095a134575
commit 1c15b65dd7
1 changed files with 4 additions and 3 deletions
--- a/wcs/sql.py
+++ b/wcs/sql.py
@ -778,9 +778,10 @@ class SqlUser(SqlMixin, wcs.users.User):
        sql_statement = '''select max(id) from %s''' % cls._table_name
        cur.execute(sql_statement)
        max_id = cur.fetchone()[0]
-        sql_statement = '''ALTER SEQUENCE %s_id_seq RESTART %s''' % (
-                        cls._table_name, max_id+1)
-        cur.execute(sql_statement)
+        if max_id is not None:
+            sql_statement = '''ALTER SEQUENCE %s_id_seq RESTART %s''' % (
+                    cls._table_name, max_id+1)
+            cur.execute(sql_statement)

        conn.commit()
        cur.close()