Resolve "[Queue-2.0] DB: Slot selection opens at is nullable in DB"

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Closes #462 (closed)

src/main/resources/migrations.yml

@@ -686,3 +686,14 @@ databaseChangeLog:
                   type: INTEGER
                   value: 15
             tableName: lab
+
+  # Add a not-null constraint on
+  - changeSet:
+      id: M3-M1
+      author: Chris Lemaire
+      changes:
+        - addNotNullConstraint:
+            columnDataType: TIMESTAMP
+            columnName: selection_opens_at
+            tableName: slotted_lab
+            defaultValueComputed: CURRENT_TIMESTAMP