在PostgreSQL中查询日期

Question

以下是我的样本表

create table mytable ( id int ,name text);

insert into mytable values(1,'tom');

insert into mytable values(2,'jerry');

select * from mytable;

结果...

  ID Name
  1  tom
  2  jerry

我的预期结果..

  ID Name
  1  tom_01_10_2014
  2  jerry_01_10_2014

Answer 1

select id,name||'_'||to_char(now()::date,'dd_mm_yyyy')  dated_name from mytable

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to_char()，now()