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6.2.9 DELETE Statement



The DELETE statement removes a record from an indexed or relative file. For indexed files, the key can then be reused for record addition. For relative files, the space is then available for a new record with the same RELATIVE KEY value.

When the DELETE statement is executed, the associated file must be open in I-O mode.


    ___ Format _____________________________________________________________ 
   |                                                                        |
   | >>__DELETE__file-name-1__ ________ __________________________________> |
   |                          |_RECORD_|                                    |
   |                                                                        |
   | >__ __________________________________________ ______________________> |
   |    |_INVALID__ _____ __imperative-statement-1_|                        |
   |               |_KEY_|                                                  |
   |                                                                        |
   | >__ ______________________________________________ __________________> |
   |    |_NOT INVALID__ _____ __imperative-statement-2_|                    |
   |                   |_KEY_|                                              |
   |                                                                        |
   | >__ ____________ ___________________________________________________>< |
   |    |_END-DELETE_|                                                      |
   |                                                                        |
   |________________________________________________________________________|
file-name-1
Must be defined in an FD entry in the Data Division and must be the name of an indexed or relative file.

After successful execution of a DELETE statement, the record is removed from the file and can no longer be accessed.

>_OS/2_> For OS/2 VSAM files, after the successful execution of a DELETE statement, any record lock held by the file connector on the deleted record is released. However, if any other file connector holds a lock on the record to be deleted, the DELETE statement is unsuccessful. <_OS/2_<

Execution of the DELETE statement does not affect the contents of the record area associated with file-name-1 or the content of the data item referenced by the data-name specified in the DEPENDING ON phrase of the RECORD clause associated with file-name-1.

If the FILE STATUS clause is specified in the File-Control entry, the associated status key is updated when the DELETE statement is executed.

The file position indicator is not affected by execution of the DELETE statement.

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