[PECO-1803] Databricks sqlalchemy is split into this folder (#1)

* databricks-sqlalchemy plugin split

* Refractored code and added pytest.ini for sqla_testing issue

* Changed imports from databricks.sqlalchemy to databricks_sqlalchemy

* Added the integration.yml workflow

* Changed screts name

* Added workflow to run on commit changes

* Fixed issue of failing tests in github actions

* Added dependency tests

* Cleaned up the code

* Changed README.md

* README.md edits

* Renamed the imports to databricks

* Minor refractors

* Removed the Integration.yml file

* Changed the folder structure to have databricks as the common namespace

* Minor Fix

* Removed the README.md from within the sqlalchemy folder as it is present globally

* Fixed LICENSE and other issues

Author: jprakash-db

.gitignore

@@ -194,7 +194,7 @@ cython_debug/
 #  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
-#.idea/
+.idea/
 
 ### Python Patch ###
 # Poetry local configuration file - https://python-poetry.org/docs/configuration/#local-configuration

CHANGELOG.md

@@ -0,0 +1,274 @@
+# Release History
+
+# 3.3.0 (2024-07-18)
+
+- Don't retry requests that fail with HTTP code 401 (databricks/databricks-sql-python#408 by @Hodnebo)
+- Remove username/password (aka "basic") auth option (databricks/databricks-sql-python#409 by @jackyhu-db)
+- Refactor CloudFetch handler to fix numerous issues with it (databricks/databricks-sql-python#405 by @kravets-levko)
+- Add option to disable SSL verification for CloudFetch links (databricks/databricks-sql-python#414 by @kravets-levko)
+
+Databricks-managed passwords reached end of life on July 10, 2024. Therefore, Basic auth support was removed from
+the library. See https://docs.databricks.com/en/security/auth-authz/password-deprecation.html
+
+The existing option `_tls_no_verify=True` of `sql.connect(...)` will now also disable SSL cert verification
+(but not the SSL itself) for CloudFetch links. This option should be used as a workaround only, when other ways
+to fix SSL certificate errors didn't work.
+
+# 3.2.0 (2024-06-06)
+
+- Update proxy authentication (databricks/databricks-sql-python#354 by @amir-haroun)
+- Relax `pyarrow` pin (databricks/databricks-sql-python#389 by @dhirschfeld)
+- Fix error logging in OAuth manager (databricks/databricks-sql-python#269 by @susodapop)
+- SQLAlchemy: enable delta.feature.allowColumnDefaults for all tables (databricks/databricks-sql-python#343 by @dhirschfeld)
+- Update `thrift` dependency (databricks/databricks-sql-python#397 by @m1n0)
+
+# 3.1.2 (2024-04-18)
+
+- Remove broken cookie code (#379)
+- Small typing fixes (#382, #384 thanks @wyattscarpenter)
+
+# 3.1.1 (2024-03-19)
+
+- Don't retry requests that fail with code 403 (#373)
+- Assume a default retry-after for 429/503 (#371)
+- Fix boolean literals (#357)
+
+# 3.1.0 (2024-02-16)
+
+- Revert retry-after behavior to be exponential backoff (#349)
+- Support Databricks OAuth on Azure (#351)
+- Support Databricks OAuth on GCP (#338)
+
+# 3.0.3 (2024-02-02)
+
+- Revised docstrings and examples for OAuth (#339)
+- Redact the URL query parameters from the urllib3.connectionpool logs (#341)
+
+# 3.0.2 (2024-01-25)
+
+- SQLAlchemy dialect now supports table and column comments (thanks @cbornet!)
+- Fix: SQLAlchemy dialect now correctly reflects TINYINT types (thanks @TimTheinAtTabs!)
+- Fix: `server_hostname` URIs that included `https://` would raise an exception
+- Other: pinned to `pandas<=2.1` and `urllib3>=1.26` to avoid runtime errors in dbt-databricks (#330)
+
+## 3.0.1 (2023-12-01)
+
+- Other: updated docstring comment about default parameterization approach (#287)
+- Other: added tests for reading complex types and revised docstrings and type hints (#293)
+- Fix: SQLAlchemy dialect raised DeprecationWarning due to `dbapi` classmethod (#294)
+- Fix: SQLAlchemy dialect could not reflect TIMESTAMP_NTZ columns (#296)
+
+## 3.0.0 (2023-11-17)
+
+- Remove support for Python 3.7
+- Add support for native parameterized SQL queries. Requires DBR 14.2 and above. See docs/parameters.md for more info.
+- Completely rewritten SQLAlchemy dialect
+  - Adds support for SQLAlchemy >= 2.0 and drops support for SQLAlchemy 1.x
+  - Full e2e test coverage of all supported features
+  - Detailed usage notes in `README.sqlalchemy.md`
+  - Adds support for:
+    - New types: `TIME`, `TIMESTAMP`, `TIMESTAMP_NTZ`, `TINYINT`
+    - `Numeric` type scale and precision, like `Numeric(10,2)`
+    - Reading and writing `PrimaryKeyConstraint` and `ForeignKeyConstraint`
+    - Reading and writing composite keys
+    - Reading and writing from views
+    - Writing `Identity` to tables (i.e. autoincrementing primary keys)
+    - `LIMIT` and `OFFSET` for paging through results
+    - Caching metadata calls
+- Enable cloud fetch by default. To disable, set `use_cloud_fetch=False` when building `databricks.sql.client`.
+- Add integration tests for Databricks UC Volumes ingestion queries
+- Retries:
+  - Add `_retry_max_redirects` config
+  - Set `_enable_v3_retries=True` and warn if users override it
+- Security: bump minimum pyarrow version to 14.0.1 (CVE-2023-47248)
+
+## 2.9.3 (2023-08-24)
+
+- Fix: Connections failed when urllib3~=1.0.0 is installed (#206)
+
+## 2.9.2 (2023-08-17)
+
+**Note: this release was yanked from Pypi on 13 September 2023 due to compatibility issues with environments where `urllib3<=2.0.0` were installed. The log changes are incorporated into version 2.9.3 and greater.**
+
+- Other: Add `examples/v3_retries_query_execute.py` (#199)
+- Other: suppress log message when `_enable_v3_retries` is not `True` (#199)
+- Other: make this connector backwards compatible with `urllib3>=1.0.0` (#197)
+
+## 2.9.1 (2023-08-11)
+
+**Note: this release was yanked from Pypi on 13 September 2023 due to compatibility issues with environments where `urllib3<=2.0.0` were installed.**
+
+- Other: Explicitly pin urllib3 to ^2.0.0 (#191)
+
+## 2.9.0 (2023-08-10)
+
+- Replace retry handling with DatabricksRetryPolicy. This is disabled by default. To enable, set `_enable_v3_retries=True` when creating `databricks.sql.client` (#182)
+- Other: Fix typo in README quick start example (#186)
+- Other: Add autospec to Client mocks and tidy up `make_request` (#188)
+
+## 2.8.0 (2023-07-21)
+
+- Add support for Cloud Fetch. Disabled by default. Set `use_cloud_fetch=True` when building `databricks.sql.client` to enable it (#146, #151, #154)
+- SQLAlchemy has_table function now honours schema= argument and adds catalog= argument (#174)
+- SQLAlchemy set non_native_boolean_check_constraint False as it's not supported by Databricks (#120)
+- Fix: Revised SQLAlchemy dialect and examples for compatibility with SQLAlchemy==1.3.x (#173)
+- Fix: oauth would fail if expired credentials appeared in ~/.netrc (#122)
+- Fix: Python HTTP proxies were broken after switch to urllib3 (#158)
+- Other: remove unused import in SQLAlchemy dialect
+- Other: Relax pandas dependency constraint to allow ^2.0.0 (#164)
+- Other: Connector now logs operation handle guids as hexadecimal instead of bytes (#170)
+- Other: test_socket_timeout_user_defined e2e test was broken (#144)
+
+## 2.7.0 (2023-06-26)
+
+- Fix: connector raised exception when calling close() on a closed Thrift session
+- Improve e2e test development ergonomics
+- Redact logged thrift responses by default
+- Add support for OAuth on Databricks Azure
+
+## 2.6.2 (2023-06-14)
+
+- Fix: Retry GetOperationStatus requests for http errors
+
+## 2.6.1 (2023-06-08)
+
+- Fix: http.client would raise a BadStatusLine exception in some cases
+
+## 2.6.0 (2023-06-07)
+
+- Add support for HTTP 1.1 connections (connection pools)
+- Add a default socket timeout for thrift RPCs
+
+## 2.5.2 (2023-05-08)
+
+- Fix: SQLAlchemy adapter could not reflect TIMESTAMP or DATETIME columns
+- Other: Relax pandas and alembic dependency specifications
+
+## 2.5.1 (2023-04-28)
+
+- Other: Relax sqlalchemy required version as it was unecessarily strict.
+
+## 2.5.0 (2023-04-14)
+
+- Add support for External Auth providers
+- Fix: Python HTTP proxies were broken
+- Other: All Thrift requests that timeout during connection will be automatically retried
+
+## 2.4.1 (2023-03-21)
+
+- Less strict numpy and pyarrow dependencies
+- Update examples in README to use security best practices
+- Update docstring for client.execute() for clarity
+
+## 2.4.0 (2023-02-21)
+
+- Improve compatibility when installed alongside other Databricks namespace Python packages
+- Add SQLAlchemy dialect
+
+## 2.3.0 (2023-01-10)
+
+- Support staging ingestion commands for DBR 12+
+
+## 2.2.2 (2023-01-03)
+
+- Support custom oauth client id and redirect port
+- Fix: Add none check on \_oauth_persistence in DatabricksOAuthProvider
+
+## 2.2.1 (2022-11-29)
+
+- Add support for Python 3.11
+
+## 2.2.0 (2022-11-15)
+
+- Bump thrift version to address https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13949
+- Add support for lz4 compression
+
+## 2.1.0 (2022-09-30)
+
+- Introduce experimental OAuth support while Bring Your Own IDP is in Public Preview on AWS
+- Add functional examples
+
+## 2.0.5 (2022-08-23)
+
+- Fix: closing a connection now closes any open cursors from that connection at the server
+- Other: Add project links to pyproject.toml (helpful for visitors from PyPi)
+
+## 2.0.4 (2022-08-17)
+
+- Add support for Python 3.10
+- Add unit test matrix for supported Python versions
+
+Huge thanks to @dbaxa for contributing this change!
+
+## 2.0.3 (2022-08-05)
+
+- Add retry logic for `GetOperationStatus` requests that fail with an `OSError`
+- Reorganised code to use Poetry for dependency management.
+
+## 2.0.2 (2022-05-04)
+
+- Better exception handling in automatic connection close
+
+## 2.0.1 (2022-04-21)
+
+- Fixed Pandas dependency in setup.cfg to be >= 1.2.0
+
+## 2.0.0 (2022-04-19)
+
+- Initial stable release of V2
+- Added better support for complex types, so that in Databricks runtime 10.3+, Arrays, Maps and Structs will get
+  deserialized as lists, lists of tuples and dicts, respectively.
+- Changed the name of the metadata arg to http_headers
+
+## 2.0.b2 (2022-04-04)
+
+- Change import of collections.Iterable to collections.abc.Iterable to make the library compatible with Python 3.10
+- Fixed bug with .tables method so that .tables works as expected with Unity-Catalog enabled endpoints
+
+## 2.0.0b1 (2022-03-04)
+
+- Fix packaging issue (dependencies were not being installed properly)
+- Fetching timestamp results will now return aware instead of naive timestamps
+- The client will now default to using simplified error messages
+
+## 2.0.0b (2022-02-08)
+
+- Initial beta release of V2. V2 is an internal re-write of large parts of the connector to use Databricks edge features. All public APIs from V1 remain.
+- Added Unity Catalog support (pass catalog and / or schema key word args to the .connect method to select initial schema and catalog)
+
+---
+
+**Note**: The code for versions prior to `v2.0.0b` is not contained in this repository. The below entries are included for reference only.
+
+---
+
+## 1.0.0 (2022-01-20)
+
+- Add operations for retrieving metadata
+- Add the ability to access columns by name on result rows
+- Add the ability to provide configuration settings on connect
+
+## 0.9.4 (2022-01-10)
+
+- Improved logging and error messages.
+
+## 0.9.3 (2021-12-08)
+
+- Add retries for 429 and 503 HTTP responses.
+
+## 0.9.2 (2021-12-02)
+
+- (Bug fix) Increased Thrift requirement from 0.10.0 to 0.13.0 as 0.10.0 was in fact incompatible
+- (Bug fix) Fixed error message after query execution failed -SQLSTATE and Error message were misplaced
+
+## 0.9.1 (2021-09-01)
+
+- Public Preview release, Experimental tag removed
+- minor updates in internal build/packaging
+- no functional changes
+
+## 0.9.0 (2021-08-04)
+
+- initial (Experimental) release of pyhive-forked connector
+- Python DBAPI 2.0 (PEP-0249), thrift based
+- see docs for more info: https://docs.databricks.com/dev-tools/python-sql-connector.html