# 语句功能
[PACKAGE变量](https://support.huaweicloud.com/bestpractice-gaussdb/gaussdb-23-0053.html)
:
[CURSOR](https://support.huaweicloud.com/bestpractice-gaussdb/gaussdb-23-0054.html)
:
[兼容性功能](https://support.huaweicloud.com/bestpractice-gaussdb/gaussdb-23-0055.html)
:
[异常处理](https://support.huaweicloud.com/bestpractice-gaussdb/gaussdb-23-0056.html)
: