環(huán)境：Oracle 10g,11g 問題重現(xiàn)：PL/SQL中命令窗口下，發(fā)現(xiàn)存儲過程得到的時(shí)間格式不符合預(yù)期要求。 SQLgt; select sysdate fro

環(huán)境：Oracle 10g,11g

問題重現(xiàn)：PL/SQL中命令窗口下，發(fā)現(xiàn)存儲過程得到的時(shí)間格式不符合預(yù)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(jié)果轉(zhuǎn)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(jié)：在Oracle存儲過程想要獲取YYYY-MM-DD的時(shí)間格式，可以轉(zhuǎn)換成字符串處理，，可以臨時(shí)指定會話的NLS_DATE_FORMAT變量，還可以整體修改客戶端的環(huán)境變量。

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