Question

我如何编写这样的函数。我在Clouse的地方连接有问题。

create or replace function is_valid_value(valuetoCheck in varchar2)
    return varchar2 is 
    v_value valid_values.resourceName%type;
begin
    begin 

            SELECT RESOURCENAME into v_value
            FROM VALID_VALUES
            WHERE VALIDVALUE IN (valuetoCheck)
            where upper(resourceName) =  upper (valuetoCheck);


    exception 
        when no_data_found then
            return 0;
           end;
        return 1;
end is_valid_value ;

Answer 1

检查此代码。找到内联的评论：

create or replace function is_valid_value(
    valuetoCheck in varchar2
) return varchar2 
is 
    v_value valid_values.resourceName%type;
begin
    --begin --> there is no need for two 'begin' in this case

            SELECT RESOURCENAME into v_value
            FROM VALID_VALUES
            WHERE VALIDVALUE IN (valuetoCheck)
            AND /* was WHERE, should be change to AND */ upper(resourceName) =  upper (valuetoCheck)
            AND other_value = another_value
            OR this_value = other_value;


    return 1; --> this should be returned before exception

    exception 
        when no_data_found then
            return 0;
           --end; --> there is no need for end since we removed 'begin'

end is_valid_value;

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