chenzhx commented on code in PR #36663:
URL: https://github.com/apache/spark/pull/36663#discussion_r893141595


##########
sql/catalyst/src/main/java/org/apache/spark/sql/connector/expressions/GeneralScalarExpression.java:
##########
@@ -196,6 +196,90 @@
  *    <li>Since version: 3.4.0</li>
  *   </ul>
  *  </li>
+ *  <li>Name: <code>DATE_ADD</code>
+ *   <ul>
+ *    <li>SQL semantic: <code>DATE_ADD(start_date, num_days)</code></li>
+ *    <li>Since version: 3.4.0</li>
+ *   </ul>
+ *  </li>
+ *  <li>Name: <code>DATE_DIFF</code>
+ *   <ul>
+ *    <li>SQL semantic: <code>DATE_DIFF(end_date, start_date)</code></li>
+ *    <li>Since version: 3.4.0</li>
+ *   </ul>
+ *  </li>
+ *  <li>Name: <code>TRUNC</code>
+ *   <ul>
+ *    <li>SQL semantic: <code>TRUNC(date, format)</code></li>
+ *    <li>Since version: 3.4.0</li>
+ *   </ul>
+ *  </li>
+ *  <li>Name: <code>SECOND</code>
+ *   <ul>
+ *    <li>SQL semantic: <code>SECOND(timestamp, timezone)</code></li>
+ *    <li>Since version: 3.4.0</li>
+ *   </ul>
+ *  </li>
+ *  <li>Name: <code>MINUTE</code>
+ *   <ul>
+ *    <li>SQL semantic: <code>MINUTE(timestamp, timezone)</code></li>
+ *    <li>Since version: 3.4.0</li>
+ *   </ul>
+ *  </li>
+ *  <li>Name: <code>HOUR</code>
+ *   <ul>
+ *    <li>SQL semantic: <code>HOUR(timestamp, timezone)</code></li>
+ *    <li>Since version: 3.4.0</li>
+ *   </ul>
+ *  </li>
+ *  <li>Name: <code>MONTH</code>

Review Comment:
   Yes. In some databases these field extractions are deprecated and EXTRACT is 
used instead, such as H2.
   http://h2database.com/html/functions.html#month



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