From b8345d097c93b84404c50d4fd9081d291badc587 Mon Sep 17 00:00:00 2001
From: Sebastian Aranda Sanchez <aranda.sebastian@gmail.com>
Date: Mon, 11 Sep 2023 18:08:02 -0300
Subject: [PATCH 1/2] Add migration to set nullable fields for 'systems',
 'subsystems' and 'cscs' columns of 'messages' table

---
 ...pdate_message_table_systems_subsystems_.py | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 alembic/versions/d9606992ad8d_update_message_table_systems_subsystems_.py

diff --git a/alembic/versions/d9606992ad8d_update_message_table_systems_subsystems_.py b/alembic/versions/d9606992ad8d_update_message_table_systems_subsystems_.py
new file mode 100644
index 0000000..0148506
--- /dev/null
+++ b/alembic/versions/d9606992ad8d_update_message_table_systems_subsystems_.py
@@ -0,0 +1,40 @@
+"""update message table systems, subsystems and cscs fields
+
+Revision ID: d9606992ad8d
+Revises: b631d21eb6dc
+Create Date: 2023-09-11 17:44:07.705399
+
+"""
+import logging
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "d9606992ad8d"
+down_revision = "b631d21eb6dc"
+branch_labels = None
+depends_on = None
+
+MESSAGE_TABLE_NAME = "message"
+
+
+def upgrade(log: logging.Logger, table_names: set[str]):
+    if MESSAGE_TABLE_NAME not in table_names:
+        log.info(f"No {MESSAGE_TABLE_NAME} table; nothing to do")
+        return
+    log.info("Set columns 'systems', 'subsystems', and 'cscs' as nullable")
+
+    op.alter_column(MESSAGE_TABLE_NAME, "systems", nullable=True)
+    op.alter_column(MESSAGE_TABLE_NAME, "subsystems", nullable=True)
+    op.alter_column(MESSAGE_TABLE_NAME, "cscs", nullable=True)
+
+
+def downgrade(log: logging.Logger, table_names: set[str]):
+    if MESSAGE_TABLE_NAME not in table_names:
+        log.info(f"No {MESSAGE_TABLE_NAME} table; nothing to do")
+        return
+
+    log.info("Set columns 'systems', 'subsystems', and 'cscs' as not nullable")
+    op.alter_column(MESSAGE_TABLE_NAME, "systems", nullable=False)
+    op.alter_column(MESSAGE_TABLE_NAME, "subsystems", nullable=False)
+    op.alter_column(MESSAGE_TABLE_NAME, "cscs", nullable=False)

From ae67f98405505c4a6dfb653b4dbc727e0b6bfaea Mon Sep 17 00:00:00 2001
From: Sebastian Aranda Sanchez <aranda.sebastian@gmail.com>
Date: Tue, 12 Sep 2023 09:20:13 -0300
Subject: [PATCH 2/2] Update CHANGELOG

---
 CHANGELOG.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 9bc2af2..6c4868c 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,6 +2,11 @@
 Change Log
 ==========
 
+0.5.1
+-----
+
+* Add missing migration to set 'systems', 'subsystems', and 'cscs' as nullable fields.
+
 0.5.0
 -----