```
show functions | keep description, *on | mv_expand description
```

```
{
    "error": {
        "root_cause": [
            {
                "type": "unresolved_exception",
                "reason": "Invalid call to dataType on an unresolved object ?description"
            }
        ],
        "type": "unresolved_exception",
        "reason": "Invalid call to dataType on an unresolved object ?description"
    },
    "status": 500
}
```

```
org.elasticsearch.xpack.ql.capabilities.UnresolvedException: Invalid call to dataType on an unresolved object ?description
        at org.elasticsearch.xpack.ql.expression.UnresolvedAttribute.dataType(UnresolvedAttribute.java:90)
        at org.elasticsearch.xpack.esql.analysis.Analyzer$ResolveRefs.resolveMvExpand(Analyzer.java:350)
        at org.elasticsearch.xpack.esql.analysis.Analyzer$ResolveRefs.doRule(Analyzer.java:334)
        at org.elasticsearch.xpack.ql.analyzer.AnalyzerRules$BaseAnalyzerRule.rule(AnalyzerRules.java:120)
        at org.elasticsearch.xpack.ql.analyzer.AnalyzerRules$AnalyzerRule.lambda$apply$0(AnalyzerRules.java:85)
```

It should throw a VerificationException and propagate the unresolved attribute message instead
x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/analysis/Analyzer.java
@Override
        protected boolean skipResolved() {
            return false;
        }
        @Override
        protected LogicalPlan doRule(LogicalPlan plan) {
            if (plan.resolved()) {
                if (plan instanceof Aggregate agg) {
                    plan = removeAggDuplicates(agg);
                }
            }
            return plan;
        }
        private static LogicalPlan removeAggDuplicates(Aggregate agg) {
            var groupings = agg.groupings();
            var newGroupings = new LinkedHashSet<>(groupings);
            
            groupings = newGroupings.size() == groupings.size() ? groupings : new ArrayList<>(newGroupings);
            var aggregates = agg.aggregates();
            var newAggregates = new ArrayList<>(aggregates);
            var nameSet = Sets.newHashSetWithExpectedSize(newAggregates.size());
            
            for (int i = newAggregates.size() - 1; i >= 0; i--) {
                var aggregate = newAggregates.get(i);
                if (nameSet.add(aggregate.name()) == false) {