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OpenAccess SDK SQL Engine core methods for Java : Exchanging data : dam_describeIndexCol
 

dam_describeIndexCol

This method is used to retrieve the description of a column associated with the optimal index returned by dam_getOptimalIndexAndConditions. The information for the index column is retrieved from the OA_STATISTICS table. Pass in NULL for any descriptor in which you have no interest.
int dam_describeIndexCol(
long         hIndexCol,
xo_int       piSeqInIndex,
StringBuffer pszColName,
xo_int       piCollation)
Table 147. Parameters for dam_describeIndexCol
Parameter
Type
Description
INPUT
hIndexCol
long
Index column handle as returned by the dam_getFirstIndexCol and dam_getNextIndexCol methods.
OUTPUT
piSeqInIndex
xo_int
The sequence of this column in the index starting at 1.
pszColName
StringBuffer
The name of the column.
piCollation
xo_int
The collation sequence:
SQL_ORDER_ASC - for ascending
SQL_ORDER_DESC - for descending
RETURN
int
DAM_SUCCESS - valid information returned.
DAM_FAILURE - failure.

See also

*dam_getFirstIndexCol
*dam_getNextIndexCol
*dam_getOptimalIndexAndConditions