zclllyybb commented on code in PR #17970:
URL: https://github.com/apache/doris/pull/17970#discussion_r1147631507
##########
be/src/vec/functions/function_string.h:
##########
@@ -146,20 +143,25 @@ struct SubstringUtil {
assert_cast<const
ColumnVector<Int32>*>(argument_columns[1].get());
auto specific_len_column =
assert_cast<const
ColumnVector<Int32>*>(argument_columns[2].get());
-
- vector(specific_str_column->get_chars(),
specific_str_column->get_offsets(),
- specific_start_column->get_data(),
specific_len_column->get_data(),
- null_map->get_data(), res->get_chars(), res->get_offsets());
-
+ if (col_const[1] && col_const[2]) {
+ vector_scalar_args(specific_str_column->get_chars(),
specific_str_column->get_offsets(),
+ specific_start_column->get_element(0),
+ specific_len_column->get_element(0),
null_map->get_data(),
+ res->get_chars(), res->get_offsets());
+ } else {
+ vector3(specific_str_column->get_chars(),
specific_str_column->get_offsets(),
Review Comment:
if one of arguments column is const, there's a bug. have to convert such a
column. (and check similar usage.)
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