标签：style blog ar io color sp for strong on
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 ----------- 2014-12-18 Executed in 0 seconds SQL> set serveroutput on SQL> declare 2 pro_date date; 3 begin 4 select sysdate into pro_date from dual; 5 dbms_output.put_line(pro_date); 6 end; 7 / 18-12月-14 PL/SQL procedure successfully completed Executed in 0.016 seconds
处理方法1：将结果转换成字符串格式：
SQL> SQL> declare 2 pro_date date; 3 begin 4 select sysdate into pro_date from dual; 5 dbms_output.put_line(to_char(pro_date,‘yyyy-mm-dd‘)); 6 end; 7 / 2014-12-18 PL/SQL procedure successfully completed Executed in 0.016 seconds SQL> SQL> declare 2 pro_date date; 3 begin 4 select sysdate into pro_date from dual; 5 dbms_output.put_line(pro_date); 6 end; 7 / 18-12月-14 PL/SQL procedure successfully completed Executed in 0 seconds
处理方法2：改变会话的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 2 pro_date date; 3 begin 4 select sysdate into pro_date from dual; 5 dbms_output.put_line(pro_date); 6 end; 7 / 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 2 pro_date date; 3 begin 4 select sysdate into pro_date from dual; 5 dbms_output.put_line(pro_date); 6 end; 7 / 2014-12-18 PL/SQL procedure successfully completed Executed 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。
标签：style blog ar io color sp for strong on
原文地址：http://www.cnblogs.com/jyzhao/p/4171367.html
