postgresql – Postgres alter view add column

我想改变一个视图并在其中添加一个新列.我有：

ALTER VIEW folders_contents
AS
SELECT files.id,files.name,files.filesize,files.updated,files.deleted,FROM files
UNION ALL
 SELECT folders.id,folders.name,0 AS filesize,folders.updated,folders.deleted,FROM folders
  ORDER BY 8,2
GO

问题是它显示：

[Err] ERROR: Syntax error at or near “AS”

这是我第一次看到视图,我需要一些帮助:)

ALTER VIEW changes varIoUs auxiliary properties of a view. 
(If you want to modify the view's defining query,use CREATE OR REPLACE VIEW.)

使用CREATE或REPLACE INSTEAD

在你的情况下,它将是这样的：

CREATE OR REPLACE VIEW folders_contents
AS
SELECT files.id,2;

SOURCE