環境：Oracle 10g,11g 問題重現：PL/SQL中命令窗口下，發現存儲過程得到的時間格式不符合預期要求。 SQLgt; select sysdate fro

環境：Oracle 10g,11g

問題重現：PL/SQL中命令窗口下，發現存儲過程得到的時間格式不符合預期要求。

SQL> select sysdate from dual;

SYSDATE

-----------

2014-12-18

Executed in 0 seconds

SQL> set serveroutput on

SQL> declare

pro_date date;

begin

select sysdate into pro_date from dual;

dbms_output.put_line(pro_date);

end;

/

18-12月-14

PL/SQL procedure successfully completed

Executed in 0.016 seconds

處理方法1：將結果轉換成字符串格式：

SQL>

SQL> declare

pro_date date;

begin

select sysdate into pro_date from dual;

dbms_output.put_line(to_char(pro_date,'yyyy-mm-dd'));

end;

/

2014-12-18

PL/SQL procedure successfully completed

Executed in 0.016 seconds

SQL>

SQL> declare

pro_date date;

begin

select sysdate into pro_date from dual;

dbms_output.put_line(pro_date);

end;

/

18-12月-14

PL/SQL procedure successfully completed

Executed in 0 seconds

處理方法2：改變會話的NLS_DATE_FORMAT

SQL> alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';

Session altered

Executed in 0.015 seconds

SQL>

SQL> declare

pro_date date;

begin

select sysdate into pro_date from dual;

dbms_output.put_line(pro_date);

end;

/

2014-12-18 11:18:15

PL/SQL procedure successfully completed

Executed in 0 seconds

SQL> alter session set nls_date_format='yyyy-mm-dd';

Session altered

Executed in 0 seconds

SQL>

SQL> declare

pro_date date;

begin

select sysdate into pro_date from dual;

dbms_output.put_line(pro_date);

end;

/

2014-12-18

PL/SQL procedure successfully completed

Executed in 0 seconds

總結：在Oracle存儲過程想要獲取YYYY-MM-DD的時間格式，可以轉換成字符串處理，，可以臨時指定會話的NLS_DATE_FORMAT變量，還可以整體修改客戶端的環境變量。

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