ICommandPrepare

OLE DB Programmer's Reference

This optional interface encapsulates command optimization, a separation of compile time and run time, as found in traditional relational database systems. The result of this optimization is a command execution plan.

If the provider supports command preparation, by supporting this interface, commands must be in a prepared state prior to calling the following methods:

  • IColumnsInfo::GetColumnInfo
  • IColumnsInfo::MapColumnIDs
  • IColumnsRowset::GetAvailableColumns
  • IColumnsRowset::GetColumnsRowset

Method Description
Prepare Validates and optimizes the current command.
Unprepare Discards the current command execution plan.

1998-2001 Microsoft Corporation. All rights reserved.



Microsoft Ole Db 2.0 Programmer's Reference and Data Access SDK
Microsoft OLE DB 2.0 Programmers Reference and Data Access SDK (Microsoft Professional Editions)
ISBN: 0735605904
EAN: 2147483647
Year: 1998
Pages: 1083

flylib.com © 2008-2017.
If you may any questions please contact us: flylib@qtcs.net