zclllyybb commented on code in PR #33243:
URL: https://github.com/apache/doris/pull/33243#discussion_r1564640053
##########
be/src/vec/functions/function_string.h:
##########
@@ -3914,4 +3914,138 @@ class FunctionIntToChar : public IFunction {
#endif
}
};
+
+class FunctionStrInsert : public IFunction {
+public:
+ static constexpr auto name = "str_insert";
+ static FunctionPtr create() { return
std::make_shared<FunctionStrInsert>(); }
+ String get_name() const override { return name; }
+ size_t get_number_of_arguments() const override { return 4; }
+
+ DataTypePtr get_return_type_impl(const DataTypes& arguments) const
override {
+ return std::make_shared<DataTypeString>();
+ }
+
+ Status execute_impl(FunctionContext* context, Block& block, const
ColumnNumbers& arguments,
+ size_t result, size_t input_rows_count) const override
{
+ DCHECK_EQ(arguments.size(), 4);
+
+ bool col_const[4];
+ ColumnPtr argument_columns[4];
+ for (int i = 0; i < 4; ++i) {
+ std::tie(argument_columns[i], col_const[i]) =
+
unpack_if_const(block.get_by_position(arguments[i]).column);
+ }
+ const auto* col_origin = assert_cast<const
ColumnString*>(argument_columns[0].get());
+
+ const auto* col_pos = assert_cast<const
ColumnVector<Int32>*>(argument_columns[1].get())
+ ->get_data()
+ .data();
+ const auto* col_len = assert_cast<const
ColumnVector<Int32>*>(argument_columns[2].get())
+ ->get_data()
+ .data();
+ const auto* col_insert = assert_cast<const
ColumnString*>(argument_columns[3].get());
+
+ ColumnString::MutablePtr col_res = ColumnString::create();
+
+ if (col_const[1] && col_const[2] && col_const[3]) {
+ vector_const(col_origin, col_pos, col_len, col_insert, col_res,
col_const[0],
+ input_rows_count);
+ } else if (col_const[1]) {
Review Comment:
col1 is const is not a high probability or something to keep an eye on.
don't support this
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