Oracle存储过程获取YYYY-MM-DD的时间格式

环境：Oracle 10g,11g问题重现：PL/SQL中命令窗口下，发现存储过程得到的时间格式不符合预期要求。SQL> select sysdate from dual;SYSDATE
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2014-12-18Executed in 0 secondsSQL> 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-14PL/SQL procedure successfully completedExecuted in 0.016 seconds处理方法1：将结果转换成字符串格式：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;
/2014-12-18PL/SQL procedure successfully completedExecuted in 0.016 secondsSQL>
SQL> declare
pro_date date;
begin
select sysdate into pro_date from dual;
dbms_output.put_line（pro_date）;
end;
/18-12月-14PL/SQL procedure successfully completedExecuted in 0 seconds处理方法2：改变会话的NLS_DATE_FORMATSQL> alter session set nls_date_format="yyyy-mm-dd hh24:mi:ss";Session alteredExecuted in 0.015 secondsSQL>
SQL> declare
pro_date date;
begin
select sysdate into pro_date from dual;
dbms_output.put_line（pro_date）;
end;
/2014-12-18 11:18:15PL/SQL procedure successfully completedExecuted in 0 secondsSQL> alter session set nls_date_format="yyyy-mm-dd";Session alteredExecuted in 0 secondsSQL>
SQL> declare
pro_date date;
begin
select sysdate into pro_date from dual;
dbms_output.put_line（pro_date）;
end;
/2014-12-18PL/SQL procedure successfully completedExecuted in 0 seconds总结：在Oracle存储过程想要获取YYYY-MM-DD的时间格式，可以转换成字符串处理，可以临时指定会话的NLS_DATE_FORMAT变量，还可以整体修改客户端的环境变量。更多Oracle相关信息见Oracle 专题页面 http://www.linuxidc.com/topicnews.aspx？tid=12本文永久更新链接地址