Record number

version 3

Record number {(table)} Number

Record number returns the physical record number for the current record of table. If there is no current record, such as when the record pointer is before or after the current selection, Record number returns –1. If the record is a new record that has not been saved, Record number returns –3.

Record numbers can change. The record numbers of deleted records are reused. Record numbers will also change if you compact the database or perform a recover by tags operation on the database using 4D Tools. During a transaction, a newly created record has a temporary record number. After the transaction has been accepted, the record is assigned a regular record number.

4D Server: This command returns a different result for the On Validate form event depending on whether it is executed on 4th Dimension or 4D Client. In single-user version, the command returns a record number (the record is considered as already created). In client/server version, the command returns -3 because, in this case, the record is already created on the server but the information has not yet been sent to the client.

The following example saves the current record number and then searches for any other records that have the same data:

   $RecNum:=Record number([People])  ` Get the record number
   QUERY ([People]; [People]Last = [People]Last) ` Anyone else with the last name?
      ` Display an alert with the number of people with the same last name
   ALERT ("There are "+String (Records in selection([People])+" with that name.")
   GOTO RECORD ([People]; $RecNum)  ` Go back to the same record 

About Record Numbers, GOTO RECORD, Is new record, Selected record number, Sequence number.