postgres - 如何更改带有时间戳的列？

Question

In postgre sql - How do I alter a column which has time stamp. Currently the column is defined as below -
creation_time timestamp(6) with time zone
and i want to make the above column not null also. So i have tried below but had no luck

ALTER TABLE my_table ALTER COLUMN creation_time TYPE timestamp(6) with time zone NOT NULL;

What is the correct syntax ?

Answer 1

根据文档：

alter table my_table alter creation_time set not null;