clickhouse

We need to increase the number of datasources that MindsDB supports. This task should add a new datasource for connecting to Redash. You can get more info on Redash docs.
If possible, please include a test for the datasource. You can check the example here.

Note: if you are familiar with another datasource tha

When we show data for a metric, we currently don't include the current day's worth of data. For users just getting set up, they may only have events from today, and want to test out if the query is working, and by excluding events from 'today', they can't see results.

TODO:

• In packages/back-end/src/services/experiments.ts on line 329, instead of using the current date as the value

1 issue description
2. fix bug, enhance....
3. git commit -m "issue name (#issue number)"

运行示例代码，如果把user对应的age和uid属性调换一下时，即使绑定了对应的tag，但是仍然按照数据库中顺序进行赋值，数据库的第一列uid对应的了user类的第一个属性age

I understand from the README and #98 that query parameters are filtered to prevent unwanted overrides of ClickHouse parameters.

However, this also filters parameters starting with param_ which are used to replace placeholders in parametrized queries[^1].
For example SELECT * FROM {table:Identifier} with param_table=some_table.

Is there any security reasons to disallow these parameters