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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-----------2014-12-18Executed in 0 secondsSQL> set serveroutput onSQL> declare2 pro_date date;3 begin4 select sysdate into pro_date from dual;5 dbms_output.put_line(pro_date);6 end;7 /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> declare2 pro_date date;3 begin4 select sysdate into pro_date from dual;5 dbms_output.put_line(to_char(pro_date,yyyy-mm-dd));6 end;7 /2014-12-18PL/SQL procedure successfully completedExecuted in 0.016 secondsSQL> SQL> declare2 pro_date date;3 begin4 select sysdate into pro_date from dual;5 dbms_output.put_line(pro_date);6 end;7 /18-12月-14PL/SQL procedure successfully completedExecuted 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 alteredExecuted in 0.015 secondsSQL> SQL> declare2 pro_date date;3 begin4 select sysdate into pro_date from dual;5 dbms_output.put_line(pro_date);6 end;7 /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> declare2 pro_date date;3 begin4 select sysdate into pro_date from dual;5 dbms_output.put_line(pro_date);6 end;7 /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。

Oracle存储过程获取YYYY-MM-DD的时间格式