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function  

dbRecordExists

 
 

Library: Database access (OMDB) legacy library
Include: omdb.xin
Return type: Switch

Returns: True or false.


Declaration

define external switch function dbRecordExists
  read-only dbField record

Argument definitions

record
is a dbField shelf.


Purpose

Use dbRecordExists to check whether or not the data cursor is positioned on an existing row.

Requirements

You must include the following line at the beginning of your OmniMark program:

  include "omdb.xin"

Usage Notes

The data cursor points to the record set's currently active row.

The function uses a dbField shelf variable in which a dbQuery function stored the record set earlier.

Example:


         repeat
           exit unless dbRecordExists my-query
  
           repeat over my-query
              output dbFieldValue my-query null '-DNF-'
              output '%t' when ! #last
           again
           output '%n'
  
           dbRecordMove my-query
         again

        Other Library Functions
   dbClose
   dbCommit
   dbDatabase
   dbExecute
   dbField
   dbFieldPrepare
   dbFieldSink
   dbFieldValue
   dbIsVersionCompatible
   dbLibraryVersion
   dbLibraryVersionOCI8
   dbLibraryVersionOCI8i
   dbLibraryVersionODBC
   dbOpenOCI8
   dbOpenOCI8i
   dbOpenODBC
   dbProcedure
   dbProcedureClose
   dbProcedureExecute
   dbProcedureOpen
   dbQuery
   dbRecordExists
   dbRecordMove
   dbRecordMoveDynamic
   dbRecordSetMove
   dbRollback
   dbSetTransactionType
   dbStatement
   dbStatementCompile
   dbStatementDiscard
   dbStatementExecute
   dbStatementStreamingExecute
   dbTable
   dbTableClose
   dbTableDelete
   dbTableInsert
   dbTableOpen
   dbTableUpdate
 
 

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OmniMark 8.2.0 Documentation Generated: March 13, 2008 at 3:27:39 pm
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