Class OnceResultSet

  • All Implemented Interfaces:
    NoPutResultSet, ResultSet, RowLocationRetRowSource, RowSource

    public class OnceResultSet
    extends NoPutResultSetImpl
    Takes an expression subquery's result set and verifies that only a single scalar value is being returned. NOTE: A row with a single column containing null will be returned from getNextRow() if the underlying subquery ResultSet is empty.