```
DROP TABLE IF EXISTS foo;

CREATE TABLE foo (timestamp DateTime, x UInt64)
ENGINE = MergeTree PARTITION BY toYYYYMMDD(timestamp)
ORDER BY (timestamp);

INSERT INTO foo (timestamp, x) SELECT toDateTime('2020-01-01 00:05:00'), number from system.numbers_mt LIMIT 100;

SELECT count() FROM system.mutations; -- ok

ALTER TABLE foo UPDATE x = 1 WHERE x = (SELECT x from foo WHERE x = 1);

SELECT count() FROM system.mutations; -- stuck

```
{
        const auto & instance = AggregateFunctionFactory::instance();
        if (instance.isAggregateFunctionName(func.name) && !endsWith(func.name, customized_func_suffix))
        {
            auto properties = instance.tryGetProperties(func.name);
            if (properties && !properties->returns_default_when_only_null)
            {
                func.name += customized_func_suffix;
            }
        }
    }
};
struct CustomizeAggregateFunctionsMoveSuffixData
{
    using TypeToVisit = ASTFunction;
    const String & customized_func_suffix;
    String moveSuffixAhead(const String & name) const