# RDDLIST()

Return an array of the available Replaceable Database Drivers

Syntax

  RDDLIST([<nRDDType>]) --> aRDDList

Arguments

  <nRDDType> is an integer that represents the type of the RDD you wish to list. The constants RDT_FULL and RDT_TRANSFER represent the two types of RDDs currently available.
  RDDType Summary 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 Constant Value Meaning 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 RDT_FULL 1 Full RDD implementation RDT_TRANSFER 2 Import/Export only driver 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴
  RDT_FULL identifies full-featured RDDs that have all the capabilities associated with an RDD.
  RDT_TRANSFER identifies RDDs of limited capability. They can only transfer records between files. You cannot use these limited RDD drivers to open a file in a work area. The SDF and DELIM drivers are examples of this type of RDD. They are only used in the implementation of APPEND FROM and COPY TO with SDF or DELIMITED files.

Returns

  RDDLIST() returns a one-dimensional array of the RDD names registered with the application as <nRDDType>.

Description

  RDDLIST() is an RDD function that returns a one-dimensional array that lists the available RDDs.
  If you do not supply <nRDDType>, all available RDDs, regardless of type, are returned.

Examples

         In this example RDDLIST() returns an array containing the
          character strings, "DBF", "SDF", "DELIM", "DBFCDX", and "DBFNTX":

          REQUEST DBFCDX

          .
          . < statements >
          .

          aRDDs := RDDLIST()

                // Returns {"DBF", SDF", "DELIM", "DBFCDX", "DBFNTX" }

         In this example, RDDLIST() returns an array containing the
          character strings, "SDF" and "DELIM":

          #include "rddsys.ch"
          .
          . < statements >
          .
          aImpExp := RDDLIST( RDT TRANSFER )

    Tests

Status

  Ready

Compliance