如何修改postgresql中的类型？

Question

我定义了一个类型：

CREATE TYPE New_A AS
   (id integer,
    id_new integer,
    arrived date,
    sum numeric);

我想将 arrived 从 date 类型更改为 timestamp without time zone 类型

我试过：

ALTER TYPE New_A SET arrived TO timestamp without time zone

但它不起作用。它给出：

ERROR: syntax error at or near "arrived"

Answer 1

您可以使用 alter attribute 子句：

ALTER TYPE new_a ALTER ATTRIBUTE arrived TYPE timestamp without time zone;

详情请参考the documentation。

how to modify Type in postgresql?