Function bindFunc

src/function/string/concat_ws.cpp:10–26

using namespace lbug::common;

static std::unique_ptr<FunctionBindData> bindFunc(const ScalarBindFuncInput& input) {
    if (input.arguments.size() < 2) {
        throw BinderException{std::format("concat_ws expects at least two parameters. Got: {}.",
            input.arguments.size())};
    }
    for (auto i = 0u; i < input.arguments.size(); i++) {
        auto& argument = input.arguments[i];
        if (argument->getDataType().getLogicalTypeID() == LogicalTypeID::ANY) {
            argument->cast(LogicalType::STRING());
        }
        if (argument->getDataType() != LogicalType::STRING()) {
            throw BinderException{std::format("concat_ws expects all string parameters. Got: {}.",
                argument->getDataType().toString())};
        }
    }
    return FunctionBindData::getSimpleBindData(input.arguments, LogicalType::STRING());
}

using handle_separator_func_t = std::function<void()>;
using handle_element_func_t = std::function<void(const string_t&)>;