xinyiZzz commented on code in PR #19538:
URL: https://github.com/apache/doris/pull/19538#discussion_r1191008648
##########
be/src/vec/exec/vunion_node.cpp:
##########
@@ -341,17 +345,17 @@ void VUnionNode::debug_string(int indentation_level,
std::stringstream* out) con
*out << ")" << std::endl;
}
-Block VUnionNode::materialize_block(Block* src_block, int child_idx) {
+Status VUnionNode::materialize_block(Block* src_block, int child_idx, Block*
res_block) {
Review Comment:
Why not throw exception
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