superset/migrations/versions/afc69274c25a_alter_sql_column_data_type_in_query_mysql_table.py

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
"""update the sql, select_sql, and executed_sql columns in the
   query table in mysql dbs to be long text columns

Revision ID: afc69274c25a
Revises: e9df189e5c7e
Create Date: 2019-05-06 14:30:26.181449

"""
import sqlalchemy as sa
from alembic import op
from sqlalchemy.databases import mysql
from sqlalchemy.dialects.mysql.base import MySQLDialect

# revision identifiers, used by Alembic.
revision = "afc69274c25a"
down_revision = "e9df189e5c7e"


def upgrade():
    bind = op.get_bind()
    if isinstance(bind.dialect, MySQLDialect):
        with op.batch_alter_table("query") as batch_op:
            batch_op.alter_column("sql", existing_type=sa.Text, type_=mysql.LONGTEXT)
            batch_op.alter_column(
                "select_sql", existing_type=sa.Text, type_=mysql.LONGTEXT
            )
            batch_op.alter_column(
                "executed_sql", existing_type=sa.Text, type_=mysql.LONGTEXT
            )


def downgrade():
    bind = op.get_bind()
    if isinstance(bind.dialect, MySQLDialect):
        with op.batch_alter_table("query") as batch_op:
            batch_op.alter_column("sql", existing_type=mysql.LONGTEXT, type_=sa.Text)
            batch_op.alter_column(
                "select_sql", existing_type=mysql.LONGTEXT, type_=sa.Text
            )
            batch_op.alter_column(
                "executed_sql", existing_type=mysql.LONGTEXT, type_=sa.Text
            )