superset 2019-05-06_14-30_afc69274c25a_alter_sql_column_data_type_in_query_mysql_table 源码
superset 2019-05-06_14-30_afc69274c25a_alter_sql_column_data_type_in_query_mysql_table 代码
文件路径：/superset/migrations/versions/2019-05-06_14-30_afc69274c25a_alter_sql_column_data_type_in_query_mysql_table.py
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# 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,
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# KIND, either express or implied. See the License for the
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"""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
)
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