想当年在oracle中d​​ev6i形成

Question

DECLARE 
    thisyear number(4,0); 
BEGIN 
    thisyear := year(getdate()); 
END; 

Answer 1

可以使用EXTRACT功能：

DECLARE 
    thisyear number(4,0); 
BEGIN 
    thisyear := extract(year from sysdate); 
END; 

或者，你可以使用TO_CHAR与格式字符串：

DECLARE 
    thisyear number(4,0); 
BEGIN 
    thisyear := to_number(to_char(sysdate, 'YYYY')); 
END;