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41 lines
1.5 KiB
Python
41 lines
1.5 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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from alembic import op
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from sqlalchemy import engine_from_config
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from sqlalchemy.engine import reflection
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from sqlalchemy.exc import NoSuchTableError
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def table_has_column(table: str, column: str) -> bool:
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"""
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Checks if a column exists in a given table.
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:param table: A table name
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:param column: A column name
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:returns: True iff the column exists in the table
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"""
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config = op.get_context().config
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engine = engine_from_config(
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config.get_section(config.config_ini_section), prefix="sqlalchemy."
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)
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insp = reflection.Inspector.from_engine(engine)
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try:
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return any(col["name"] == column for col in insp.get_columns(table))
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except NoSuchTableError:
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return False
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