Close released connections before reconnecting

• Close released connections before reconnecting. Fixes bug described in grafana/clickhouse-datasource#253.

Fix parsing macros in nested queries

Fixes bug with parsing macros in more complex queries

Query retries

Use retries setting for queries not just ping.

Mock - return results from handler

v2.3.15

return handler query (#76)

Support Retries, use Timeout for Ping

• Provides a way to perform retries where the db is temporarily unavailable.
• Now uses the timeout setting for Ping

Also allows registering a mock driver with a handler allowing handling the Ping and Results for the mock driver.

Fix parsing macros

Nested macros are now parsed correctly

Driver Mock

Adds a mock driver that we can begin to use to test different scenarios in unit tests.

Mock

Adds sql mock for cases where connectivity is blocked.

v2.3.9

Export some of the functions in preparation for long running queries.

v2.3.8

What's Changed

• Improve error handling for invalid queries by @nineinchnick in #65

New Contributors

• @nineinchnick made their first contribution in #65

Full Changelog: v2.3.7...v2.3.8