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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

Declaring explicit cursors

To declare an explicit cursor as a cursor variable in the declaration section of a block or package (discussed later), you can use one of the following forms:

  • A cursor without parameters, such as:

    CURSOR company_cur 
       IS
       SELECT company_id FROM company;
  • A cursor that accepts arguments through a parameter list, described under the “Heading Section” header:

     CURSOR company_cur (id_in IN NUMBER) IS
        SELECT name FROM company
        WHERE  company_id = id_in;
  • A cursor header that contains a RETURN clause in place of the SELECT statement:

     CURSOR company_cur (id_in IN NUMBER) 
        RETURN company%ROWTYPE

The last example shows that the cursor can be declared separately from its implementation—for example, the header in a package specification and the implementation in the package body.

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Publisher Resources

ISBN: 0596003366Errata Page