Question

我正在尝试从名为Titles的现有表创建一个名为Titles2的新表。我必须使用SELECT AS语句从Titles中创建Titles2中的列。我还必须按RANGE分区Titles2，然后按LIST分区。

用于创建标题的代码：

SQL> CREATE TABLE Titles
  2    (
  3    Title_id         char(3)     ,
  4    Title            varchar2(40),
  5    Genre            varchar2(10),
  6    Pages            number      ,
  7    Price            number(5,2) ,
  8    Sales            number      ,
  9    Pub_id           char(3)     ,
 10    Pubdate          date        ,
 11    Advance          number(9,2) ,
 12    Royalty_rate     number(5,2) ,
 13    CONSTRAINT Titles_pk PRIMARY KEY (title_id),
 14    CONSTRAINT Titles_Publishers_fk FOREIGN KEY (Pub_id)
 15                             REFERENCES Publishers (pub_id)
 16    )
 17    PARTITION BY RANGE (Pubdate) (
 18    PARTITION P1 VALUES LESS THAN (TO_DATE('01-JAN-1995', 'DD-MON-YYYY')) TABLESPACE TSLab8ben1,
 19    PARTITION P2 VALUES LESS THAN (TO_DATE('01-JAN-2000', 'DD-MON-YYYY')) TABLESPACE TSLab8ben2,
 20    PARTITION P3 VALUES LESS THAN (MAXVALUE) TABLESPACE TSLab8ben3
 21    );

Table created.

以下代码是我迄今为止从标题创建Titles2表的代码：

CREATE TABLE Titles2 AS
SELECT Title_id AS TID, Title, Genre, Sales, (Sales * Price) AS Revenue, Pub_id AS P#
FROM Titles
PARTITION BY RANGE (Revenue)
SUBPARTITION BY LIST (Genre)
SUBPARTITION TEMPLATE (
SUBPARTITION G1 VALUES ('history', 'biography'),
SUBPARTITION G2 VALUES ('computer','children'),
SUBPARTITION G3 VALUES (DEFAULT)) (
PARTITION P1 VALUES LESS THAN (100000),
PARTITION P2 VALUES LESS THAN (500000),
PARTITION P3 VALUES LESS THAN (1000000),
PARTITION P4 VALUES LESS THAN (MAXVALUE));

但是，创建Titles2的代码不会执行。有人能帮助我执行Titles2代码吗？谢谢！

Answer 1

使用Titles2语句（不是CTAS）创建表create table，使用适当的分区，就像使用Titles一样。然后使用insert语句使用Titles2

中的数据填充Titles

insert into Titles2 
  select <<columns>>
    from Titles

或者您可以按如下方式重写上一个create table语句：

CREATE TABLE Titles2
  PARTITION BY RANGE (Revenue)(
    SUBPARTITION BY LIST (Genre)
    SUBPARTITION TEMPLATE (
    SUBPARTITION G1 VALUES ('history', 'biography'),
    SUBPARTITION G2 VALUES ('computer','children'),
    SUBPARTITION G3 VALUES (DEFAULT)) (
    PARTITION P1 VALUES LESS THAN (100000),
    PARTITION P2 VALUES LESS THAN (500000),
    PARTITION P3 VALUES LESS THAN (1000000),
    PARTITION P4 VALUES LESS THAN (MAXVALUE))
   ) AS
SELECT Title_id AS TID
     , Title
     , Genre
     , Sales
     , (Sales * Price) AS Revenue
     , Pub_id AS P#
FROM Titles

如何从SELECT AS在Oracle 11g R2中创建表并按范围列表对表进行分区？

1 个答案: