| # 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. |
| import logging |
| import re |
| from datetime import datetime |
| from re import Pattern |
| from typing import Any, Optional |
| |
| from flask_babel import gettext as __ |
| from sqlalchemy import types |
| from sqlalchemy.dialects.mssql.base import SMALLDATETIME |
| |
| from superset.constants import TimeGrain |
| from superset.db_engine_specs.base import BaseEngineSpec, LimitMethod |
| from superset.errors import SupersetErrorType |
| from superset.utils.core import GenericDataType |
| |
| logger = logging.getLogger(__name__) |
| |
| |
| # Regular expressions to catch custom errors |
| CONNECTION_ACCESS_DENIED_REGEX = re.compile("Adaptive Server connection failed") |
| CONNECTION_INVALID_HOSTNAME_REGEX = re.compile( |
| r"Adaptive Server is unavailable or does not exist \((?P<hostname>.*?)\)" |
| "(?!.*Net-Lib error).*$" |
| ) |
| CONNECTION_PORT_CLOSED_REGEX = re.compile( |
| r"Net-Lib error during Connection refused \(61\)" |
| ) |
| CONNECTION_HOST_DOWN_REGEX = re.compile( |
| r"Net-Lib error during Operation timed out \(60\)" |
| ) |
| |
| |
| class MssqlEngineSpec(BaseEngineSpec): |
| engine = "mssql" |
| engine_name = "Microsoft SQL Server" |
| limit_method = LimitMethod.WRAP_SQL |
| max_column_name_length = 128 |
| allows_cte_in_subquery = False |
| allow_limit_clause = False |
| |
| _time_grain_expressions = { |
| None: "{col}", |
| TimeGrain.SECOND: "DATEADD(SECOND, \ |
| DATEDIFF(SECOND, '2000-01-01', {col}), '2000-01-01')", |
| TimeGrain.MINUTE: "DATEADD(MINUTE, DATEDIFF(MINUTE, 0, {col}), 0)", |
| TimeGrain.FIVE_MINUTES: "DATEADD(MINUTE, \ |
| DATEDIFF(MINUTE, 0, {col}) / 5 * 5, 0)", |
| TimeGrain.TEN_MINUTES: "DATEADD(MINUTE, \ |
| DATEDIFF(MINUTE, 0, {col}) / 10 * 10, 0)", |
| TimeGrain.FIFTEEN_MINUTES: "DATEADD(MINUTE, \ |
| DATEDIFF(MINUTE, 0, {col}) / 15 * 15, 0)", |
| TimeGrain.THIRTY_MINUTES: "DATEADD(MINUTE, \ |
| DATEDIFF(MINUTE, 0, {col}) / 30 * 30, 0)", |
| TimeGrain.HOUR: "DATEADD(HOUR, DATEDIFF(HOUR, 0, {col}), 0)", |
| TimeGrain.DAY: "DATEADD(DAY, DATEDIFF(DAY, 0, {col}), 0)", |
| TimeGrain.WEEK: "DATEADD(DAY, 1 - DATEPART(WEEKDAY, {col})," |
| " DATEADD(DAY, DATEDIFF(DAY, 0, {col}), 0))", |
| TimeGrain.MONTH: "DATEADD(MONTH, DATEDIFF(MONTH, 0, {col}), 0)", |
| TimeGrain.QUARTER: "DATEADD(QUARTER, DATEDIFF(QUARTER, 0, {col}), 0)", |
| TimeGrain.YEAR: "DATEADD(YEAR, DATEDIFF(YEAR, 0, {col}), 0)", |
| TimeGrain.WEEK_STARTING_SUNDAY: "DATEADD(DAY, -1," |
| " DATEADD(WEEK, DATEDIFF(WEEK, 0, {col}), 0))", |
| TimeGrain.WEEK_STARTING_MONDAY: "DATEADD(WEEK," |
| " DATEDIFF(WEEK, 0, DATEADD(DAY, -1, {col})), 0)", |
| } |
| |
| column_type_mappings = ( |
| ( |
| re.compile(r"^smalldatetime.*", re.IGNORECASE), |
| SMALLDATETIME(), |
| GenericDataType.TEMPORAL, |
| ), |
| ) |
| |
| custom_errors: dict[Pattern[str], tuple[str, SupersetErrorType, dict[str, Any]]] = { |
| CONNECTION_ACCESS_DENIED_REGEX: ( |
| __( |
| 'Either the username "%(username)s", password, ' |
| 'or database name "%(database)s" is incorrect.' |
| ), |
| SupersetErrorType.CONNECTION_ACCESS_DENIED_ERROR, |
| {}, |
| ), |
| CONNECTION_INVALID_HOSTNAME_REGEX: ( |
| __('The hostname "%(hostname)s" cannot be resolved.'), |
| SupersetErrorType.CONNECTION_INVALID_HOSTNAME_ERROR, |
| {}, |
| ), |
| CONNECTION_PORT_CLOSED_REGEX: ( |
| __('Port %(port)s on hostname "%(hostname)s" refused the connection.'), |
| SupersetErrorType.CONNECTION_PORT_CLOSED_ERROR, |
| {}, |
| ), |
| CONNECTION_HOST_DOWN_REGEX: ( |
| __( |
| 'The host "%(hostname)s" might be down, and can\'t be ' |
| "reached on port %(port)s." |
| ), |
| SupersetErrorType.CONNECTION_HOST_DOWN_ERROR, |
| {}, |
| ), |
| } |
| |
| @classmethod |
| def epoch_to_dttm(cls) -> str: |
| return "dateadd(S, {col}, '1970-01-01')" |
| |
| @classmethod |
| def convert_dttm( |
| cls, target_type: str, dttm: datetime, db_extra: Optional[dict[str, Any]] = None |
| ) -> Optional[str]: |
| sqla_type = cls.get_sqla_column_type(target_type) |
| |
| if isinstance(sqla_type, types.Date): |
| return f"CONVERT(DATE, '{dttm.date().isoformat()}', 23)" |
| if isinstance(sqla_type, SMALLDATETIME): |
| datetime_formatted = dttm.isoformat(sep=" ", timespec="seconds") |
| return f"""CONVERT(SMALLDATETIME, '{datetime_formatted}', 20)""" |
| if isinstance(sqla_type, types.DateTime): |
| datetime_formatted = dttm.isoformat(timespec="milliseconds") |
| return f"""CONVERT(DATETIME, '{datetime_formatted}', 126)""" |
| return None |
| |
| @classmethod |
| def fetch_data( |
| cls, cursor: Any, limit: Optional[int] = None |
| ) -> list[tuple[Any, ...]]: |
| data = super().fetch_data(cursor, limit) |
| # Lists of `pyodbc.Row` need to be unpacked further |
| return cls.pyodbc_rows_to_tuples(data) |
| |
| @classmethod |
| def extract_error_message(cls, ex: Exception) -> str: |
| if str(ex).startswith("(8155,"): |
| return ( |
| f"{cls.engine} error: All your SQL functions need to " |
| "have an alias on MSSQL. For example: SELECT COUNT(*) AS C1 FROM TABLE1" |
| ) |
| return f"{cls.engine} error: {cls._extract_error_message(ex)}" |
| |
| |
| class AzureSynapseSpec(MssqlEngineSpec): |
| engine = "mssql" |
| engine_name = "Azure Synapse" |
| default_driver = "pyodbc" |