Tanya-W commented on code in PR #13035:
URL: https://github.com/apache/doris/pull/13035#discussion_r1057422940
##########
be/src/vec/exprs/vectorized_fn_call.cpp:
##########
@@ -104,12 +104,36 @@ doris::Status VectorizedFnCall::execute(VExprContext*
context, doris::vectorized
size_t num_columns_without_result = block->columns();
// prepare a column to save result
block->insert({nullptr, _data_type, _expr_name});
+ if (_function->can_fast_execute()) {
+ bool ok = fast_execute(context->fn_context(_fn_context_index), *block,
arguments,
+ num_columns_without_result,
block->rows());
+ if (ok) {
+ *result_column_id = num_columns_without_result;
+ return Status::OK();
+ }
+ }
+
RETURN_IF_ERROR(_function->execute(context->fn_context(_fn_context_index),
*block, arguments,
num_columns_without_result,
block->rows(), false));
*result_column_id = num_columns_without_result;
return Status::OK();
}
+bool VectorizedFnCall::fast_execute(FunctionContext* context, Block& block,
const ColumnNumbers& arguments,
Review Comment:
function `fast_execute ` can be better distinguished from
`_function->execute`, the difference between `fast_execute` and
`_function->execute` is `fast_execute` can direct copy expr filter result which
build by apply index in segment_iterator, `_function->execute` need do some
complex filtering logic.
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