Updated the alembic script ada681e1877f_create_fi_to_type_mapping_tab…

…le to drop the sbl_institution_type_id

column, and to remove the FK and index.  On the downgrade, these are added back in.

db_revisions/versions/ada681e1877f_create_fi_to_type_mapping_table.py

@@ -26,7 +26,30 @@ def upgrade() -> None:
             sa.Column("fi_id", sa.String(), sa.ForeignKey("financial_institutions.lei"), primary_key=True),
             sa.Column("type_id", sa.String(), sa.ForeignKey("sbl_institution_type.id"), primary_key=True),
         )
-
+        with op.batch_alter_table("financial_institutions") as batch_op:
+            batch_op.drop_constraint(
+                "fk_sbl_institution_type_financial_institutions",
+                type_="foreignkey"
+            )
+            batch_op.drop_index(
+                op.f("ix_financial_institutions_sbl_institution_type_id")
+            )
+            batch_op.drop_column(
+                "sbl_institution_type_id"
+            )
 
 def downgrade() -> None:
     op.drop_table("fi_to_type_mapping")
+    with op.batch_alter_table("financial_institutions") as batch_op:
+        batch_op.add_column(sa.Column("sbl_institution_type_id", sa.String(), nullable=True))
+        batch_op.create_foreign_key(
+            "fk_sbl_institution_type_financial_institutions",
+            "sbl_institution_type",
+            ["sbl_institution_type_id"],
+            ["id"],
+        )
+        batch_op.create_index(
+            op.f("ix_financial_institutions_sbl_institution_type_id"),
+            ["sbl_institution_type_id"],
+            unique=False,
+        )