JET_ENUMCOLUMNID Structure

Applies to: Windows | Windows Server

JET_ENUMCOLUMNID Structure

The JET_ENUMCOLUMNID structure enumerates a specific set of columns and, optionally, a specific set of multiple values for those columns when the JetEnumerateColumns function is used. JetEnumerateColumns returns an array of JET_ENUMCOLUMNID structures.

    typedef struct {
      JET_COLUMNID columnid;
      unsigned long ctagSequence;
      unsigned long* rgtagSequence;
    } JET_ENUMCOLUMNID;

Members

columnid

The column ID to enumerate.

If the column ID is 0 (zero) then the enumeration of this column is skipped and a corresponding slot in the output array of JET_ENUMCOLUMN structures will be generated with a column state of JET_wrnColumnSkipped.

ctagSequence

Optionally identifies an array of column values (by one-based index) to enumerate for the specified column ID.

If ctagSequence is 0 (zero) then rgtagSequence is ignored and all column values for the specified column ID will be enumerated.

If an element of rgtagSequence is 0 (zero), then the enumeration of that column value (by one-based index) will be skipped. A corresponding slot in the output array of the JET_ENUMCOLUMNID structure will be generated with a column status value of JET_wrnColumnSkipped.

rgtagSequence

An array of one-based indices into the array of column values for a given column. A single element is an itagSequence which is defined in JET_RETRIEVECOLUMN. An itagSequence of 0 (zero) means "skip". An itagSequence of 1 means return the first column value of the column, 2 means the second, and so on.

Requirements

See Also

JET_COLUMNID
JET_ENUMCOLUMN
JET_ENUMCOLUMNID
JET_RETRIEVECOLUMN
JetEnumerateColumns