# 系统函数
- **[系统函数兼容性概述](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0587.html)**   
- **[流量控制函数](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0588.html)**   
- **[日期和时间函数](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0589.html)**   
- **[字符串函数](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0590.html)**   
- **[强制转换函数](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0591.html)**   
- **[加密函数](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0592.html)**   
- **[JSON函数](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0593.html)**   
- **[聚合函数](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0594.html)**   
- **[数字操作函数](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0595.html)**   
- **[其他函数](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0596.html)**