yiguolei commented on code in PR #9972:
URL: https://github.com/apache/incubator-doris/pull/9972#discussion_r890086208


##########
fe/fe-core/src/main/java/org/apache/doris/analysis/ColumnDef.java:
##########
@@ -315,8 +335,12 @@ public static void validateDefaultValue(Type type, String 
defaultValue) throws A
                 
decimalLiteral.checkPrecisionAndScale(scalarType.getScalarPrecision(), 
scalarType.getScalarScale());
                 break;
             case DATE:
+                DateLiteral dateLiteral = new DateLiteral(defaultValue, type);
+                break;
             case DATETIME:
-                new DateLiteral(defaultValue, type);
+                if (defaultValueExprDef == null || 
!defaultValueExprDef.getExprName().equals(DefaultValue.NOW)) {
+                    DateLiteral datetimeLiteral = new 
DateLiteral(defaultValue, type);

Review Comment:
   if defaultValueExprDef == null, then check datetimeLiteral
   if defaultValueExprDef != null, then check the function name == now.



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