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Oracle in a Nutshell
book

Oracle in a Nutshell

by Rick Greenwald, David C. Kreines
December 2002
Intermediate to advanced content levelIntermediate to advanced
928 pages
85h 29m
English
O'Reilly Media, Inc.
Content preview from Oracle in a Nutshell

VARRAY

[CREATE [OR REPLACE]] TYPE type_name IS VARRAY | 
   VARYING ARRAY (max_elements) OF element_type [NOT NULL];

A singly dimensioned, bounded collection of homogeneous elements available in both PL/SQL and the database. VARRAYs (variable arrays) are always bounded and never sparse. Unlike nested tables, their element order is preserved when you store and retrieve them from the database.

Keywords

type_name

Any valid identifier that will be used later to declare the collection.

max_elements

Maximum number of elements for this VARRAY.

element_type

Type of the collection’s elements. All elements are of a single type, which can be most scalar datatypes, an object type, or a REF object type. If the elements are objects, the object type itself cannot have an attribute that is a collection. Explicitly disallowed collection datatypes are BOOLEAN, NCHAR, NCLOB, NVARCHAR2, REF CURSOR, TABLE, and VARRAY.

NOT NULL

Indicates that a collection of this type cannot have any NULL elements. However, the collection can be atomically NULL (uninitialized).

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Publisher Resources

ISBN: 0596003366Errata Page