如何在Oracle中编写表格文字？

发布时间：2020-12-12 16:26:32 所属栏目：百科来源：网络整理

导读：可以使用以下命令创建包含一列和一行的表： select 'create' as col from dual; 这可以用于构建表连接： with a as (select 'create' as ac from dual),b as (select 'delete' as bc from dual)select * from a left outer join b on (ac = bc); 现在我想要

可以使用以下命令创建包含一列和一行的表：

select 'create' as col from dual;

这可以用于构建表连接：

with
  a as (select 'create' as ac from dual),b as (select 'delete' as bc from dual)
select * from a left outer join b on (ac = bc);

现在我想要两行.我是这样做的：

select 'create' as col from dual
union
select 'delete' as col from dual;

但是有一个更紧凑的符号吗？我试过了

select ('create','delete') as col from dual;

但它不起作用.

例如,您可以使用集合类型和TABLE运算符(适用于Oracle 10g)：

SQL> SELECT column_value FROM TABLE(SYS.ODCIVARCHAR2LIST('abc','def','ghi'));

COLUMN_VALUE
--------------------------------------------------------------------------------
abc
def
ghi

（编辑：李大同）

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