JET_INDEXID Structure

Article
08/26/2021

Applies to: Windows | Windows Server

JET_INDEXID Structure

The JET_INDEXID structure holds an index ID. An index ID is a hint that is used to accelerate the selection of the current index using JetSetCurrentIndex. It is most useful when there is a very large number of indexes over a table. The index ID can be retrieved using JetGetIndexInfo or JetGetTableIndexInfo.

    typedef struct tagJET_INDEXID {
      unsigned long cbStruct;
      char rgbIndexId[sizeof(JET_API_PRT) + sizeof(unsigned long) + sizeof(unsigned long)];
    } JET_INDEXID;

Members

cbStruct

The size, in bytes, of the index ID.

This is the actual size of the index ID that is returned in the output buffer from JetGetIndexInfo or JetGetTableIndexInfo.

rgbIndexId

An opaque BLOB of information that is used by the engine to quickly identify an index in its schema cache.

Do not attempt to interpret the BLOB of information. It is not a set size.

Requirements

Requirement	Value
Client	Requires Windows Vista, Windows XP, or Windows 2000 Professional.
Server	Requires Windows Server 2008, Windows Server 2003, or Windows 2000 Server.
Header	Declared in Esent.h.

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JET_INDEXID Structure