mirror of
https://github.com/apache/superset.git
synced 2026-04-19 08:04:53 +00:00
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
69 lines
2.7 KiB
Python
69 lines
2.7 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
|
|
# or more contributor license agreements. See the NOTICE file
|
|
# distributed with this work for additional information
|
|
# regarding copyright ownership. The ASF licenses this file
|
|
# 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
|
|
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
# KIND, either express or implied. See the License for the
|
|
# specific language governing permissions and limitations
|
|
# under the License.
|
|
# pylint: disable=C,R,W
|
|
import re
|
|
|
|
from sqlalchemy.types import String, UnicodeText
|
|
|
|
from superset.db_engine_specs.base import BaseEngineSpec, LimitMethod
|
|
|
|
|
|
class MssqlEngineSpec(BaseEngineSpec):
|
|
engine = 'mssql'
|
|
epoch_to_dttm = "dateadd(S, {col}, '1970-01-01')"
|
|
limit_method = LimitMethod.WRAP_SQL
|
|
max_column_name_length = 128
|
|
|
|
time_grain_functions = {
|
|
None: '{col}',
|
|
'PT1S': "DATEADD(second, DATEDIFF(second, '2000-01-01', {col}), '2000-01-01')",
|
|
'PT1M': 'DATEADD(minute, DATEDIFF(minute, 0, {col}), 0)',
|
|
'PT5M': 'DATEADD(minute, DATEDIFF(minute, 0, {col}) / 5 * 5, 0)',
|
|
'PT10M': 'DATEADD(minute, DATEDIFF(minute, 0, {col}) / 10 * 10, 0)',
|
|
'PT15M': 'DATEADD(minute, DATEDIFF(minute, 0, {col}) / 15 * 15, 0)',
|
|
'PT0.5H': 'DATEADD(minute, DATEDIFF(minute, 0, {col}) / 30 * 30, 0)',
|
|
'PT1H': 'DATEADD(hour, DATEDIFF(hour, 0, {col}), 0)',
|
|
'P1D': 'DATEADD(day, DATEDIFF(day, 0, {col}), 0)',
|
|
'P1W': 'DATEADD(week, DATEDIFF(week, 0, {col}), 0)',
|
|
'P1M': 'DATEADD(month, DATEDIFF(month, 0, {col}), 0)',
|
|
'P0.25Y': 'DATEADD(quarter, DATEDIFF(quarter, 0, {col}), 0)',
|
|
'P1Y': 'DATEADD(year, DATEDIFF(year, 0, {col}), 0)',
|
|
}
|
|
|
|
@classmethod
|
|
def convert_dttm(cls, target_type, dttm):
|
|
return "CONVERT(DATETIME, '{}', 126)".format(dttm.isoformat())
|
|
|
|
@classmethod
|
|
def fetch_data(cls, cursor, limit):
|
|
data = super(MssqlEngineSpec, cls).fetch_data(cursor, limit)
|
|
if data and type(data[0]).__name__ == 'Row':
|
|
data = [[elem for elem in r] for r in data]
|
|
return data
|
|
|
|
column_types = [
|
|
(String(), re.compile(r'^(?<!N)((VAR){0,1}CHAR|TEXT|STRING)', re.IGNORECASE)),
|
|
(UnicodeText(), re.compile(r'^N((VAR){0,1}CHAR|TEXT)', re.IGNORECASE)),
|
|
]
|
|
|
|
@classmethod
|
|
def get_sqla_column_type(cls, type_):
|
|
for sqla_type, regex in cls.column_types:
|
|
if regex.match(type_):
|
|
return sqla_type
|
|
return None
|