fix: alembic revision autogenerate script (#4069)

* update

Autogenerated code for alembic update

run alembic revision --autogenerate

* updated script

run alembic revision --autogenerate -m

* Update e4aaf16201c2_update_description_columns_type_errors.py

updated the reviews and checks if the table exists or not.

* update

Autogenerated code for alembic update

run alembic revision --autogenerate

* updated script

run alembic revision --autogenerate -m

* Update e4aaf16201c2_update_description_columns_type_errors.py

updated the reviews and checks if the table exists or not.

* replace revision

* Delete e4aaf16201c2_update_description_columns_type_errors.py

* Update 5ace73a7f223_new_remove_table_upgrade_op.py

making relevant change to remove vertex_build related upgrades and downgrades.

---------

Co-authored-by: Jordan Frazier <jordan.frazier@datastax.com>

src/backend/base/langflow/alembic/versions/5ace73a7f223_new_remove_table_upgrade_op.py

@@ -0,0 +1,39 @@
+"""new remove table upgrade op
+
+Revision ID: 5ace73a7f223
+Revises: 0ae3a2674f32
+Create Date: 2024-10-08 10:59:12.980671
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel
+from sqlalchemy.engine.reflection import Inspector
+from langflow.utils import migration
+from sqlalchemy.dialects import sqlite
+from langflow.utils import migration
+
+# revision identifiers, used by Alembic.
+revision: str = "5ace73a7f223"
+down_revision: Union[str, None] = "0ae3a2674f32"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+
+    with op.batch_alter_table("message", schema=None) as batch_op:
+        batch_op.alter_column("text", existing_type=sa.TEXT(), nullable=True)
+
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("message", schema=None) as batch_op:
+        batch_op.alter_column("text", existing_type=sa.TEXT(), nullable=False)
+    
+    # ### end Alembic commands ###