Added migrations for the database

alembic/versions/baf03ce269e0_added_base_quantity.py

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+"""added base_quantity
+
+Revision ID: baf03ce269e0
+Revises: 07020b2808d3
+Create Date: 2025-10-09 16:49:52.979556
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'baf03ce269e0'
+down_revision: Union[str, Sequence[str], None] = '07020b2808d3'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('user_deals', sa.Column('base_quantity', sa.Float(), nullable=True))
+    op.drop_column('user_deals', 'trading_type')
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('user_deals', sa.Column('trading_type', sa.VARCHAR(), autoincrement=False, nullable=True))
+    op.drop_column('user_deals', 'base_quantity')
+    # ### end Alembic commands ###