DecodeKeyValsToCols decodes the values that are part of the key, writing the result to the rowIdx'th row in coldata.TypedVecs.

DecodeTableValueToCol decodes a value encoded by EncodeTableValue, writing the result to the rowIdx'th position of the vecIdx'th vector in coldata.TypedVecs.

UnmarshalColumnValueToCol decodes the value from a non-zero length roachpb.Value using the type expected by the column, writing into the vecIdx'th vector of coldata.TypedVecs at the given rowIdx.