Question

我正在尝试对PLSQL做一个非常基本的过程，但是当我尝试在SQL中使用它时，它将返回无效的标识符。

create or replace PROCEDURE YEARS_BETWEEN(date1 IN date , date2 IN date, p_result out number)
IS
    v_months number;
BEGIN
    v_months := months_between(date1, date2);

    p_result := TRUNC(v_months / 12, 0);
END years_between;

谁能告诉我怎么了？

SQL IS

select YEARS_BETWEEN(GBDATUM, SYSDATE) as leeftijd  FROM medewerkers;

Answer 1

如果要在select中调用它，则需要一个函数而不是一个过程：

create or replace function years_between (in_date1 in date , in_date2 in date)
return number as
    v_months number;
begin
    v_months := months_between(date1, date2);

    return(trunc(v_months / 12, 0));
end;  --  years_between

尝试在SQL / PLSQL中使用时的过程标识符无效

1 个答案: