创建视图的Postgres SQL与评论

Question

我创建的Postgres SQL视图与SQL语句

CREATE OR REPLACE VIEW {ViewName} as 
Select 
..... 

我问有没有什么方法来创建视图的列注释。 创建视图后，它生成时的注释被添加到列的错误：

ERROR: "{ViewName}" is not a table, composite type, or foreign table.

Answer 1

要定义上一列（或一视图）注释使用comment on：

create view some_view 
as 
select x as col1, y as col2, z as col3 
from some_table; 

然后：

comment on view some_view is 'Some View'; 
comment on column some_view.col1 is 'Originally column X';