Windows Dev Center

JET_UNICODEINDEX Structure

Windows

Last modified: January 09, 2012

Applies to: Windows | Windows Server

The JET_UNICODEINDEX structure customizes how Unicode data gets normalized when an index is created over a Unicode column.

typedef struct tagJET_UNICODEINDEX {
  unsigned long lcid;
  unsigned long dwMapFlags;
} JET_UNICODEINDEX;

Members

lcid

The Locale ID to use when normalizing the data. Any locale may be used as long as the appropriate language pack has been installed on the machine. The one exception is that the Language Neutral locale (LCID of zero) is illegal.

dwMapFlags

These flags get passed to LCMapString when Unicode data gets normalized to a key, which enables user-defined flags to override the default.

Windows 2000:  The only two legal values for dwFlags are:

  • ( LCMAP_SORTKEY | NORM_IGNORECASE | NORM_IGNOREKANATYPE | NORM_IGNOREWIDTH | NORM_IGNORENONSPACE )

  • ( LCMAP_SORTKEY | NORM_IGNORECASE | NORM_IGNOREKANATYPE | NORM_IGNOREWIDTH )

dwMapFlags has the following restrictions.

Value

Meaning

LCMAP_SORTKEY

Mandatory.

LCMAP_BYTEREV

Optional.

NORM_IGNORECASE

Optional.

NORM_IGNORENONSPACE

Optional.

NORM_IGNORESYMBOLS

Optional.

NORM_IGNOREKANATYPE

Optional.

NORM_IGNOREWIDTH

Optional.

SORT_STRINGSORT

Optional.

Requirements

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.

See Also

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