```
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
if (matches.isEmpty()) {
            UnresolvedAttribute unresolved;
            var name = u.name();
            if (Regex.isSimpleMatchPattern(name)) {
                unresolved = u.withUnresolvedMessage(format(null, "No match found for [{}]", name));
            } else {
                Set<String> names = new HashSet<>(attrList.size());
                for (var a : attrList) {
                    String nameCandidate = a.name();
                    if (EsqlDataTypes.isPrimitive(a.dataType())) {
                        names.add(nameCandidate);
                    }
                }
                unresolved = u.withUnresolvedMessage(UnresolvedAttribute.errorMessage(name, StringUtils.findSimilar(name, names)));
            }
            return singletonList(unresolved);
        }
        return matches;
    }
    private static Attribute handleSpecialFields(UnresolvedAttribute u, Attribute named) {
        if (named instanceof FieldAttribute fa) {
            
            var field = fa.field();
            if (field instanceof InvalidMappedField imf) {
                named = u.withUnresolvedMessage("Cannot use field [" + fa.name() + "] due to ambiguities being " + imf.errorMessage());
            }
        }
        return named;
    }
    private static class ResolveFunctions extends ParameterizedAnalyzerRule<LogicalPlan, AnalyzerContext> {