# 表达式
- **[简单表达式](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0120.html)**   
- **[条件表达式](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0121.html)**   
- **[子查询表达式](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0122.html)**   
- **[数组表达式](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0123.html)**   
- **[行表达式](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0124.html)**   
- **[时间间隔表达式](https://support.huaweicloud.com/distributed-ref-v10-gaussdb/gaussdb-08-0125.html)**