revMoveToRecord

Type

command

Summary

Moves to the specified record in a record set.

Syntax

revMoveToRecord <recordSetId>, <recordNumber>

Description

Use the revMoveToRecord command to move around within the selected set of records.

If the command could not move to the specified record, then the value of the result function will be set to false, otherwise it will be set to true.

The revMoveToRecord command is currently supported by MySQL, PostgreSQL and SQLite. On ODBC, it will work providing that a forward only cursor has not been selected. For more information on ODBC Cursor types, please see the revOpenDatabase function. The revMoveToRecord command is not supported by Oracle at the moment and will just return false.

If you are using older database drivers (i.e. pre LiveCode 3.5), this command will not be supported. The error "revdberr,not supported by driver" will be thrown.

Parameters

Name	Type	Description
recordSetId		The number returned by the revQueryDatabase function when the record set was created.
recordNumber		The zero-based index of the record to move to (i.e. the first record is 0, the second is 1)

Examples

revMoveToRecord tCursor, the menuHistory of button "Record Number"

revMoveToRecord tCursor, tCurrentRecord + kRecordsPerPage

Value

Name	Type	Description
the result		Not all databases support moving directly to a specified record in a record set, however for those that do, it will typically be faster to use the revMoveToRecord command than to repeatedly call revMoveToNextRecord or revMoveToPreviousRecord. If the database does not support the operation, LiveCode will attempt to emulate it. This emulation will typically be slower than random access on databases that support it. If the emulation does not succeed, then the result will be set to false.

Related

library: Database library

command: revMoveToPreviousRecord, revMoveToNextRecord

function: result, revOpenDatabase

glossary: function, record set

Compatibility and Support

Introduced

LiveCode 3.5

OS

mac

windows

linux

ios

android

Platforms

desktop

server

mobile