sql - 创建具有硬编码值的视图而不编写插入

Question

嗨，我正在通过以下方式创建视图

CREATE OR REPLACE FORCE VIEW tableA (field1, field2)
AS
  SELECT 
    CAST("state" AS        CHAR(2)),
    CAST("LOCALITY_NAME" AS   CHAR(31)),
  FROM tableB;

我需要再添加一个名为“id”的列，并为所有行填充硬编码值“abc”。在创建视图时可以这样做吗？我看过这个帖子，但我无法理解它如何适合我的情况。

Answer 1

SELECT 'abc' as id,
        CAST("state" AS CHAR(2)),
        CAST(LOCALITY_NAME AS CHAR(31)),
FROM tableB

Answer 2

Sure, just add it as a constanct value:

CREATE OR REPLACE FORCE VIEW tableA (field1, field2)
AS
  SELECT
    CAST("state" AS        CHAR(2)),
    CAST("LOCALITY_NAME" AS   CHAR(31)),
    'abc' AS id 
  FROM tableB;