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Oracle 11G OCP 1Z0-053 284

原创 Oracle 作者:LuiseDalian 时间:2014-09-16 16:16:12 1 删除 编辑
(284)Evaluate the following SQL statement used to create the PRODUCTS table:

CREATE TABLE products

(

  product_id NUMBER(3) PRIMARY KEY,

  product_desc VARCHAR2(25),

  qty NUMBER(8,2),

  rate NUMBER(10,2),

  total_value AS ( qty * rate)

)

PARTITION BY RANGE (total_value)

(

  PARTITION p1 VALUES LESS THAN (100000),

  PARTITION p2 VALUES LESS THAN (150000),

  PARTITION p3 VALUES LESS THAN (MAXVALUE)

) COMPRESS FOR ALL OPERATIONS;

Which statement is true regarding this command?

A. It executes successfully but partition pruning cannot happen for this partition key.

B. It produces an error because the TOTAL_VALUE column cannot be used as a partition key.

C. It produces an error because compression cannot be used for the TOTAL_VALUE partition key.

D. It executes successfully but the values in the TOTAL_VALUE column would not be physically stored in the partitions.


答案:(D)

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