internal GroupByIntoOp(VarVec keys, VarVec inputs, VarVec outputs)
: base(OpType.GroupByInto, keys, outputs)
{
m_inputs = inputs;
}
internal UnionAllOp(VarVec outputs, VarMap left, VarMap right, Var branchDiscriminator)
: base(OpType.UnionAll, outputs, left, right)
{
this.m_branchDiscriminator = branchDiscriminator;
}