feature: add $__dateTimeFilter() macro

[SpencerTorres]

TL;DR

Adds a $__dateTimeFilter(dateColumn, timeColumn) that expands into:

WHERE
  (dateColumn >= toDate('2022-10-21') AND dateColumn <= toDate('2022-10-23'))
  AND
  (timeColumn >= toDateTime(1415792726) AND timeColumn <= toDateTime(1447328726))

Why?

A common pattern in ClickHouse is having an ORDER BY that looks like this:

PARTITION BY toYYYYMM(TimestampDate)
ORDER BY (TimestampDate, TimestampTime)

Where TimestampDate is a Date and TimestampTime is a DateTime.

When querying this, it is common to do $__dateFilter(TimestampDate) AND $__timeFilter(TimestampTime). This macro makes it shorter to type, by being able to do $__dateTimeFilter(TimestampDate, TimestampTime).

With this macro it is faster and more efficient to query tables that have this pattern of partitioning, since it references both time columns.

[asimpson]

LGTM, thanks! 🚀