Forms for Indexed READ Statements (VMS only)

Indexed READ statements transfer input data from external records that have keyed access.

In an indexed file, a series of records can be read in key value sequence by using an indexed READ statement and sequential READ statements. The first record in the sequence is read by using the indexed statement, the rest are read by using the sequential READ statements.

An indexed READ statement can be formatted or unformatted, and takes one of the following forms:

Formatted:

READ (eunit, format, key [, keyid] [, iostat] [, err]) [io-list]

Unformatted:

READ (eunit, key [, keyid] [, err]) [io-list]

For more information, see READ in the A to Z Reference.

This section discusses the following topics:

• Rules for Formatted Indexed READ Statements (VMS only)
• Rules for Unformatted Indexed READ Statements (VMS only)

For More Information:

• See I/O control-list specifiers.
• See I/O lists.