Interface ColumnOrdering
- All Known Implementing Classes:
IndexColumnOrder
public interface ColumnOrdering
The column ordering interface defines a column that is to be
ordered in a sort or index, and how it is to be ordered. Column
instances are compared by calling the compare(Orderable) method
of Orderable.
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Method Summary
Modifier and TypeMethodDescriptionint
boolean
boolean
Indicate whether NULL values should be ordered below non-NULL.
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Method Details
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getColumnId
int getColumnId() -
getIsAscending
boolean getIsAscending() -
getIsNullsOrderedLow
boolean getIsNullsOrderedLow()Indicate whether NULL values should be ordered below non-NULL. This function returns TRUE if the user has specified, via theclause in the ORDER BY clause, that NULL values of this column should sort lower than non-NULL values. - Returns:
- whether nulls should sort low
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