Oracle的to_char()函数使用

Posted 芬乐

tags:

篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了Oracle的to_char()函数使用相关的知识,希望对你有一定的参考价值。

(1)用作日期转换:

to_char(date,‘格式‘);

select to_date(2005-01-01 ‘,yyyy-MM-dd‘) from dual;
select to_char(sysdate,yyyy-MM-dd HH24:mi:ss‘) from dual;

(2)处理数字:

to_char(number,‘格式‘);

select to_char(88877) from dual;
select to_char(1234567890,099999999999999‘)  from dual;
select to_char(12345678,999,999,999,999‘)  from dual;
select to_char(123456,99.999‘)  from dual;
select to_char(1234567890,999,999,999,999.9999‘)  from dual;

(3)to_char(salary,‘$99,99‘);

 select TO_CHAR(123,$99,999.9‘) from dual;

(4)用于进制转换:将10进制转换为16进制;

select to_char(4567,xxxx‘) from dual;
select to_char(123,xxx‘) from dual;

例子:

 1 //// to_char 例子 
 2 输入    输出
 3 to_char(now(),Day, HH12:MI:SS)    Tuesday , 05:39:18
 4 to_char(now(),FMDay, HH12:MI:SS)    Tuesday, 05:39:18
 5 to_char(-0.1,99.99)     -.10
 6 to_char(-0.1,FM9.99)    -.1
 7 to_char(0.1,0.9)     0.1
 8 to_char(12,9990999.9)     0012.0
 9 to_char(12,FM9990999.9)    0012
10 to_char(485,999)     485
11 to_char(-485,999)    -485
12 to_char(485,9 9 9)     4 8 5
13 to_char(1485,9,999)     1,485
14 to_char(1485,9G999)     1 485
15 to_char(148.5,999.999)     148.500
16 to_char(148.5,999D999)     148,500
17 to_char(3148.5,9G999D999)     3 148,500
18 to_char(-485,999S)    485-
19 to_char(-485,999MI)    485-
20 to_char(485,999MI)    485
21 to_char(485,PL999)    +485
22 to_char(485,SG999)    +485
23 to_char(-485,SG999)    -485
24 to_char(-485,9SG99)    4-85
25 to_char(-485,999PR)    <485>
26 to_char(485,L999)    DM 485
27 to_char(485,RN)     CDLXXXV
28 to_char(485,FMRN)    CDLXXXV
29 to_char(5.2,FMRN)    V
30 to_char(482,999th)     482nd
31 to_char(485, "Good number:"999)    Good number: 485
32 to_char(485.8,"Pre-decimal:"999" Post-decimal:" .999)    Pre-decimal: 485 Post-decimal: .800
33 to_char(12,99V999)     12000
34 to_char(12.4,99V999)     12400
35 to_char(12.45, 99V9)     125

 

以上是关于Oracle的to_char()函数使用的主要内容,如果未能解决你的问题,请参考以下文章

oracle里nvl,to_char,decode这些函数怎么用啊?

oracle to_char函数使用

将 Oracle SQL 转换为 OBIEE Evaluate/TO_CHAR 函数

Oracle之to_char

Oracle SQL TO_CHAR 函数返回值

由 to_char 函数引起的 Oracle “Invalid Number”