public static boolean isAlias(String typeName) {
        return typeName != null && !typeName.isEmpty() && allAliases.contains(typeName.trim());
    }
Checks if the given type name is an alias or not.

@param typeName type name
@return true if the type name is an alias; false otherwise
clickhouse-data/src/main/java/com/clickhouse/data/ClickHouseDataType.java