PL/SQL 如何让当前时间可变？

Question

我的街区：

create or replace procedure currentime IS
    current_time VARCHAR2(50):=  TO_CAHR( SYSDATE, 'YYYY.MM.DD HH24:MI:SS' ) ;

    --current_time VARCHAR2(50):=  SELECT TO_CAHR( SYSDATE, 'YYYY.MM.DD HH24:MI:SS' ) FROM DUAL;
begin
    dbms_output.put_line(current_time);
end;

set serveroutput on;
call currentime();

PL/SQL 错误：

错误（14,1）：PLS-00103：“SET”

Answer 1

尝试

create or replace procedure currentime IS
    current_time VARCHAR2(50) ;    

begin
    dbms_output.put_line(TO_CHAR( SYSDATE, 'YYYY.MM.DD HH24:MI:SS' ));

    current_time :=  TO_CHAR( SYSDATE, 'YYYY.MM.DD HH24:MI:SS' );

    dbms_output.put_line(current_time );

end;

set serveroutput on;
call currentime();

Answer 2

编译程序后需要有/终止符。下面是添加终止符后输出应该如何显示的示例。我还稍微修改了程序以不需要变量。

代码

CREATE OR REPLACE PROCEDURE currentime
IS
BEGIN
    DBMS_OUTPUT.put_line (TO_CHAR (SYSDATE, 'YYYY.MM.DD HH24:MI:SS'));
END;
/

SET SERVEROUTPUT ON;
CALL currentime ();

PL/SQL 如何让当前时间可变？

PL/SQL how to make current time variable?

oracle

plsql

plsqldeveloper

代码