feat: Add support for `unix_timestamp` function #172

	# Licensed to the Apache Software Foundation (ASF) under one
	# or more contributor license agreements. See the NOTICE file
	# distributed with this work for additional information
	# regarding copyright ownership. The ASF licenses this file
	# to you under the Apache License, Version 2.0 (the
	# "License"); you may not use this file except in compliance
	# with the License. You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing,
	# software distributed under the License is distributed on an
	# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	# KIND, either express or implied. See the License for the
	# specific language governing permissions and limitations
	# under the License.

	name: Check Markdown Formatting

	concurrency:
	group: ${{ github.repository }}-${{ github.head_ref \|\| github.sha }}-${{ github.workflow }}
	cancel-in-progress: true

	on:
	pull_request:
	paths:
	- '**.md'

	jobs:
	prettier-check:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v6

	- name: Setup Node.js
	uses: actions/setup-node@v6
	with:
	node-version: '24'

	- name: Install prettier
	run: npm install -g prettier

	- name: Check markdown formatting
	run: \|
	# if you encounter error, run prettier locally and commit changes using instructions at:
	#
	# https://datafusion.apache.org/comet/contributor-guide/development.html#how-to-format-md-document
	#
	prettier --check "*/.md"

Provide feedback