ICommandPrepare

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.

This topic is a part of:

• Microsoft OLE DB