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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 |
|---|---|
Validates and optimizes the current command. |
|
Discards the current command execution plan. |
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