SQL Oracle 向 CTE 添加新行

Question

我正在尝试使用 Oracle SQL 将附加行添加到 CTE 表，但无法完全正常工作。我已经阅读过，似乎使用 INSERT INTO () 是我的最佳选择，但我觉得我错过了一些简单的东西，并且在“插入”时出现语法错误。

下面是我试图插入的代码，我在这一点之上有几个 CTE（即，WITH table as ()、table2 as ()、table3 as () 等），但下面是我得到的部分我的错误：

region as (
select City, County
from clarity_pos cp
left join zc_county zc on zc.county_c = cp.county_c
where cp.county_c is not null
)

Insert into 
region (City, County) 
Values
('AMSTON', 'TOLLAND')
,('BURLINGTON', 'HARTFORD')
,('COVENTRY', 'TOLLAND')
,('DARIAN', 'FAIRFIELD')
,('EAST LYME', 'NEW LONDON')

Select City, County
from region

Answer 1

保留

REGION

CTE 的代码原样，然后通过联合添加其他行，例如

 WITH
 region AS
 (
-- original code
          SELECT    city,
                    county
          FROM      clarity_pos cp
          left join zc_county zc
          ON        zc.county_c = cp.county_c
          WHERE     cp.county_c IS NOT NULL
-- now add additional rows:
          UNION ALL
          SELECT 'AMSTON',
                 'TOLLAND'
          FROM   dual
          UNION ALL
          SELECT 'BURLINGTON',
                 'HARTFORD'
          FROM   dual )
SELECT city,
       county
FROM   region