Make column non-nullable

from sqlalchemy import (

    Boolean,

    Column,

    false,

    ForeignKey,

    func,

    Integer,

    false,

    select,

)

from sqlalchemy import func

from galaxy.model.database_object_names import build_index_name

from galaxy.model.migrations.util import (

    add_column,

    alter_column,

    drop_column,

    drop_index,

    transaction,

def upgrade():

    with transaction():

        # Add a nullable deleted column

        add_column(table_name, Column(column_name, Boolean(), nullable=True, index=True))

        # Add a deleted column

        add_column(table_name, Column(column_name, Boolean(), nullable=False, index=True, server_default=false()))

        table = sa.sql.table(

            table_name,

            Column("id", Integer, primary_key=True),

            Column(column_name, Boolean, index=True, default=False),

        )

        # Set everything to deleted

        op.execute(table.update().where(table.c.deleted.is_(None)).values(deleted=True))

        op.execute(table.update().values(deleted=True))

        # Select the latest api keys

        s = select(func.max(table.c.id)).group_by(table.c.user_id)

        # Set all of these api keys to not deleted

        op.execute(table.update().where(table.c.id.in_(s)).values(deleted=False))

        # Make column not nullable and default to false

        alter_column(table_name, column_name, existing_type=Boolean(), nullable=False, server_default=false())

def downgrade():