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https://github.com/apache/superset.git
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95291facff
* Refactor db_engine_specs into package * Rename bigquery class and add epoch funcs * Fix flake8 errors * Dynamically load all engine specs * Fix linting errors and unit tests * Implement Snowflake epoch time funcs * Implement Teradata epoch time func * Fix presto datasource query and remove unused import * Fix broken datasource query * Add mypy ignore for false positive * Add missing license files * Make create_time_grains_tuple public * Fix flake8 quote * Fix incorrect licence header
59 lines
2.3 KiB
Python
59 lines
2.3 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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# pylint: disable=C,R,W
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from superset.db_engine_specs.base import BaseEngineSpec, LimitMethod
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class Db2EngineSpec(BaseEngineSpec):
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engine = 'ibm_db_sa'
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limit_method = LimitMethod.WRAP_SQL
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force_column_alias_quotes = True
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max_column_name_length = 30
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time_grain_functions = {
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None: '{col}',
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'PT1S': 'CAST({col} as TIMESTAMP)'
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' - MICROSECOND({col}) MICROSECONDS',
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'PT1M': 'CAST({col} as TIMESTAMP)'
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' - SECOND({col}) SECONDS'
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' - MICROSECOND({col}) MICROSECONDS',
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'PT1H': 'CAST({col} as TIMESTAMP)'
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' - MINUTE({col}) MINUTES'
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' - SECOND({col}) SECONDS'
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' - MICROSECOND({col}) MICROSECONDS ',
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'P1D': 'CAST({col} as TIMESTAMP)'
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' - HOUR({col}) HOURS'
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' - MINUTE({col}) MINUTES'
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' - SECOND({col}) SECONDS'
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' - MICROSECOND({col}) MICROSECONDS',
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'P1W': '{col} - (DAYOFWEEK({col})) DAYS',
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'P1M': '{col} - (DAY({col})-1) DAYS',
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'P0.25Y': '{col} - (DAY({col})-1) DAYS'
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' - (MONTH({col})-1) MONTHS'
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' + ((QUARTER({col})-1) * 3) MONTHS',
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'P1Y': '{col} - (DAY({col})-1) DAYS'
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' - (MONTH({col})-1) MONTHS',
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}
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@classmethod
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def epoch_to_dttm(cls):
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return "(TIMESTAMP('1970-01-01', '00:00:00') + {col} SECONDS)"
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@classmethod
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def convert_dttm(cls, target_type, dttm):
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return "'{}'".format(dttm.strftime('%Y-%m-%d-%H.%M.%S'))
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