hubgeter commented on code in PR #40695:
URL: https://github.com/apache/doris/pull/40695#discussion_r1756585201
##########
be/src/vec/functions/function_timestamp.cpp:
##########
@@ -1182,6 +1184,139 @@ class FunctionOtherTypesToDateType : public IFunction {
}
};
+struct FromIso8601DateV2 {
+ static constexpr auto name = "from_iso8601_date";
+
+ static bool is_variadic() { return true; } //todo : check is or not
is_variadic
+
+ static DataTypes get_variadic_argument_types() { return
{std::make_shared<DataTypeString>()}; }
+
+ static DataTypePtr get_return_type_impl(const DataTypes& arguments) {
+ return make_nullable(std::make_shared<DataTypeDateV2>());
+ }
+
+ static Status execute(FunctionContext* context, Block& block, const
ColumnNumbers& arguments,
+ size_t result, size_t input_rows_count) {
+ const auto* src_column_ptr =
block.get_by_position(arguments[0]).column.get();
+
+ std::regex calendar_regex(R"((\d{4})(-)?(\d{2})(-)?(\d{2}))"); //
YYYY-MM-DD or YYYYMMDD
+ std::regex year_month_regex(R"((\d{4})-(\d{2}))"); //
YYYY-MM
+ std::regex year_only_regex(R"((\d{4}))"); // YYYY
+ std::regex week_regex(
+ R"((\d{4})(-)?W(\d{2})(-)?(\d)?)"); // YYYY-Www or YYYY-Www-D
or YYYYWww or YYYYWwwD
+ std::regex day_of_year_regex(R"((\d{4})(-)?(\d{3}))"); // YYYY-DDD or
YYYYDDD
Review Comment:
i will use static const to fix it.
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