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2055ecc1ba
* feat: refactor error components and add database issue code * Apply suggestions from code review Co-authored-by: John Bodley <4567245+john-bodley@users.noreply.github.com> Co-authored-by: John Bodley <4567245+john-bodley@users.noreply.github.com>
56 lines
2.3 KiB
Python
56 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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from datetime import datetime
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from typing import Optional
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from superset.db_engine_specs.base import BaseEngineSpec
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from superset.utils import core as utils
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class ClickHouseEngineSpec(BaseEngineSpec): # pylint: disable=abstract-method
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"""Dialect for ClickHouse analytical DB."""
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engine = "clickhouse"
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engine_name = "ClickHouse"
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time_secondary_columns = True
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time_groupby_inline = True
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_time_grain_expressions = {
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None: "{col}",
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"PT1M": "toStartOfMinute(toDateTime({col}))",
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"PT5M": "toDateTime(intDiv(toUInt32(toDateTime({col})), 300)*300)",
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"PT10M": "toDateTime(intDiv(toUInt32(toDateTime({col})), 600)*600)",
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"PT15M": "toDateTime(intDiv(toUInt32(toDateTime({col})), 900)*900)",
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"PT0.5H": "toDateTime(intDiv(toUInt32(toDateTime({col})), 1800)*1800)",
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"PT1H": "toStartOfHour(toDateTime({col}))",
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"P1D": "toStartOfDay(toDateTime({col}))",
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"P1W": "toMonday(toDateTime({col}))",
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"P1M": "toStartOfMonth(toDateTime({col}))",
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"P0.25Y": "toStartOfQuarter(toDateTime({col}))",
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"P1Y": "toStartOfYear(toDateTime({col}))",
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}
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@classmethod
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def convert_dttm(cls, target_type: str, dttm: datetime) -> Optional[str]:
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tt = target_type.upper()
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if tt == utils.TemporalType.DATE:
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return f"toDate('{dttm.date().isoformat()}')"
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if tt == utils.TemporalType.DATETIME:
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return f"""toDateTime('{dttm.isoformat(sep=" ", timespec="seconds")}')"""
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return None
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