Vladimir Rudnykh

Follow-up for the https://github.com/iterative/datachain/pull/1110 and https://github.com/iterative/datachain/pull/1179 - We need to check all the places where empty `File` (with empty `path`) can fail - We need to add more tests on...

Conjunction operators validation

3

In datachain [filter](https://docs.datachain.ai/references/datachain/#datachain.lib.dc.DataChain.filter) method we can use [conjunction operators](https://docs.sqlalchemy.org/en/20/core/operators.html#conjunction-operators) as following: - `AND` operation: ```python .filter(C("foo") == "bar", C("baz") == "qux") ``` ```python .filter((C("foo") == "bar") & (C("baz") == "qux"))...