---
layout: global
title: INVALID_OBSERVED_METRICS error class
displayTitle: INVALID_OBSERVED_METRICS error class
license: |
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  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

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---

[SQLSTATE: 42K0E](sql-error-conditions-sqlstates.html#class-42-syntax-error-or-access-rule-violation)

Invalid observed metrics.

This error class has the following derived error classes:

## AGGREGATE_EXPRESSION_WITH_DISTINCT_UNSUPPORTED

Aggregate expressions with DISTINCT are not allowed in observed metrics, but found: `<expr>`.

## AGGREGATE_EXPRESSION_WITH_FILTER_UNSUPPORTED

Aggregate expression with FILTER predicate are not allowed in observed metrics, but found: `<expr>`.

## MISSING_NAME

The observed metrics should be named: `<operator>`.

## NESTED_AGGREGATES_UNSUPPORTED

Nested aggregates are not allowed in observed metrics, but found: `<expr>`.

## NON_AGGREGATE_FUNC_ARG_IS_ATTRIBUTE

Attribute `<expr>` can only be used as an argument to an aggregate function.

## NON_AGGREGATE_FUNC_ARG_IS_NON_DETERMINISTIC

Non-deterministic expression `<expr>` can only be used as an argument to an aggregate function.

## WINDOW_EXPRESSIONS_UNSUPPORTED

Window expressions are not allowed in observed metrics, but found: `<expr>`.