добавил foreign

db/alter_table_contingent_add_column_foreign.sql

+--liquibase formatted sql
+
+-- changeset galan:alter_table_contingent_add_column_foreign
+
+ALTER TABLE contingent
+    ADD COLUMN IF NOT EXISTS contingent_foreign int4;
+
+/* liquibase rollback
+ALTER TABLE contingent DROP COLUMN IF EXISTS contingent_foreign;
+*/
\ No newline at end of file

db/master-changelog.yaml

@@ -21,3 +21,5 @@ databaseChangeLog:
       file: ./db/create_assignments_table.sql
   - include:
       file: ./db/create_spdis_table.sql
+  - include:
+      file: ./db/alter_table_contingent_add_column_foreign.sql