---
metadata:
  - name: generator
    content: Diplodoc Platform v5.50.6
alternate:
  - https://ytsaurus.tech/docs/en/yql/syntax/not_yet_supported.md
  - https://ytsaurus.tech/docs/ru/yql/syntax/not_yet_supported.md
---
> **Documentation Index:** Fetch the complete configuration index at https://ytsaurus.tech/docs/en/llms.txt

# Classic SQL constructs not supported yet

## NATURAL JOIN {#natural-join}

An alternative is to explicitly list the matching columns on both sides.

## NOW() / CURRENT_TIME() {#now}

An alternative is to use the functions [CurrentUtcDate, CurrentUtcDatetime and CurrentUtcTimestamp](https://ytsaurus.tech/docs/en/yql/builtins/basic.md#current-utc).