ColumnList#

class rbc.heavydb.ColumnList#

RBC ColumnList<T> type that corresponds to HeavyDB COLUMN LIST

In HeavyDB, a ColumnList of type T is represented as follows:

{
    T** ptrs;
    int64_t num_cols_;
    int64_t num_rows_;
}

Attributes

ColumnList.ncols

Return the number of columns in a ColumnList

ColumnList.nrows

Return the number of rows each column has in a ColumnList

Methods