superset spark 源码
superset spark 代码
文件路径：/superset/db_engine_specs/spark.py
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# distributed with this work for additional information
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# 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,
# software distributed under the License is distributed on an
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# KIND, either express or implied. See the License for the
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# under the License.
from superset.db_engine_specs.hive import HiveEngineSpec
time_grain_expressions = {
None: "{col}",
"PT1S": "date_trunc('second', {col})",
"PT1M": "date_trunc('minute', {col})",
"PT1H": "date_trunc('hour', {col})",
"P1D": "date_trunc('day', {col})",
"P1W": "date_trunc('week', {col})",
"P1M": "date_trunc('month', {col})",
"P3M": "date_trunc('quarter', {col})",
"P1Y": "date_trunc('year', {col})",
"P1W/1970-01-03T00:00:00Z": (
"date_trunc('week', {col} + interval '1 day') + interval '5 days'"
),
"1969-12-28T00:00:00Z/P1W": (
"date_trunc('week', {col} + interval '1 day') - interval '1 day'"
),
}
class SparkEngineSpec(HiveEngineSpec):
_time_grain_expressions = time_grain_expressions
engine_name = "Apache Spark SQL"
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