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fb51632e18
* Add typing to db_engine_specs * Add more type annotations and docstrings * Add docstrings and typing to sql_parse and db_engine_specs * Refine select_star * Fix execute and add more docstrings * Revert kwargs change from execute * Remove redundant or * Align view and table getter schema types * Fix return type of latest_partition * Remove some typing from presto * Improve docstring for __extract_from_token
65 lines
2.5 KiB
Python
65 lines
2.5 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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# pylint: disable=C,R,W
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from urllib import parse
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from superset.db_engine_specs.postgres import PostgresBaseEngineSpec
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class SnowflakeEngineSpec(PostgresBaseEngineSpec):
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engine = "snowflake"
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force_column_alias_quotes = True
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max_column_name_length = 256
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time_grain_functions = {
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None: "{col}",
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"PT1S": "DATE_TRUNC('SECOND', {col})",
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"PT1M": "DATE_TRUNC('MINUTE', {col})",
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"PT5M": "DATEADD(MINUTE, FLOOR(DATE_PART(MINUTE, {col}) / 5) * 5, \
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DATE_TRUNC('HOUR', {col}))",
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"PT10M": "DATEADD(MINUTE, FLOOR(DATE_PART(MINUTE, {col}) / 10) * 10, \
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DATE_TRUNC('HOUR', {col}))",
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"PT15M": "DATEADD(MINUTE, FLOOR(DATE_PART(MINUTE, {col}) / 15) * 15, \
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DATE_TRUNC('HOUR', {col}))",
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"PT0.5H": "DATEADD(MINUTE, FLOOR(DATE_PART(MINUTE, {col}) / 30) * 30, \
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DATE_TRUNC('HOUR', {col}))",
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"PT1H": "DATE_TRUNC('HOUR', {col})",
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"P1D": "DATE_TRUNC('DAY', {col})",
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"P1W": "DATE_TRUNC('WEEK', {col})",
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"P1M": "DATE_TRUNC('MONTH', {col})",
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"P0.25Y": "DATE_TRUNC('QUARTER', {col})",
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"P1Y": "DATE_TRUNC('YEAR', {col})",
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}
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@classmethod
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def adjust_database_uri(cls, uri, selected_schema=None):
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database = uri.database
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if "/" in uri.database:
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database = uri.database.split("/")[0]
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if selected_schema:
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selected_schema = parse.quote(selected_schema, safe="")
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uri.database = database + "/" + selected_schema
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return uri
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@classmethod
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def epoch_to_dttm(cls) -> str:
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return "DATEADD(S, {col}, '1970-01-01')"
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@classmethod
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def epoch_ms_to_dttm(cls) -> str:
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return "DATEADD(MS, {col}, '1970-01-01')"
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