Oracle使用with子句创建表

Question

我可以根据使用with子句形成的查询创建表吗？

Answer 1

当然：

CREATE TABLE t
AS 
WITH some_data AS ( 
   SELECT 1 as some_value 
   FROM dual

   UNION ALL 

   SELECT 2 
   FROM dual
) 
SELECT * 
FROM some_data

Answer 2

CREATE TABLE table_name AS语句基于select语句创建表。 with子句的解决方案是：

CREATE TABLE t
AS 
SELECT * FROM (
WITH some_data AS ( 
   SELECT 1 as some_value 
   FROM dual

   UNION ALL 

   SELECT 2 
   FROM dual
) 
);

Answer 3

对于多个CTE（公用表表达式；即多个WITH子句），我发现相同的语法有效。即

CREATE TABLE schema.table_name as 
WITH table1 as (SELECT 1),
table2 as (SELECT 2)

select * from table2

将从table_name语句的schema中创建select