# 附录
- **[扩展函数](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0413.html)**   
- **[美元引用的字符串常量](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0415.html)**   
- **[行表达式函数白名单](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0416.html)**