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https://issues.apache.org/jira/browse/HIVE-26995?focusedWorklogId=841962&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-841962
 ]

ASF GitHub Bot logged work on HIVE-26995:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 27/Jan/23 08:59
            Start Date: 27/Jan/23 08:59
    Worklog Time Spent: 10m 
      Work Description: deniskuzZ commented on code in PR #3988:
URL: https://github.com/apache/hive/pull/3988#discussion_r1088719577


##########
ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java:
##########
@@ -1133,7 +1133,20 @@ private String processTable(QB qb, ASTNode tabref) 
throws SemanticException {
 
     if (asOfTimeIndex != -1 || asOfVersionIndex != -1) {
       String asOfVersion = asOfVersionIndex == -1 ? null : 
tabref.getChild(asOfVersionIndex).getChild(0).getText();
-      String asOfTime = asOfTimeIndex == -1 ? null : 
tabref.getChild(asOfTimeIndex).getChild(0).getText();
+      String asOfTime = null;
+      
+      if (asOfTimeIndex != -1) {
+        ASTNode expr = (ASTNode) tabref.getChild(asOfTimeIndex).getChild(0);
+        if (expr.getChildCount() > 0) {
+          ExprNodeDesc desc = genExprNodeDesc(expr, null, false, true);
+          if (desc instanceof ExprNodeConstantDesc) {
+            ExprNodeConstantDesc c = (ExprNodeConstantDesc) desc;
+            asOfTime = String.valueOf(c.getValue());
+          }

Review Comment:
   👍 





Issue Time Tracking
-------------------

    Worklog Id:     (was: 841962)
    Time Spent: 40m  (was: 0.5h)

> Iceberg: Enhance time travel syntax with expressions
> ----------------------------------------------------
>
>                 Key: HIVE-26995
>                 URL: https://issues.apache.org/jira/browse/HIVE-26995
>             Project: Hive
>          Issue Type: Task
>            Reporter: Denys Kuzmenko
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> Allow expressions in time travel queries, such as 
> {code}
> FOR SYSTEM_TIME AS OF CURRENT_TIMESTAMP - interval '10' hours
> {code}



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