认真生活,因为生活只有一次 格式化函数 to_char: 函数 返回 描述 例子 to_char(timestamp, text) text 把 timestamp 转换成 string to_char...(timestamp 'now','HH12:MI:SS') to_char(int, text) text 把 int4/int8 转换成 string to_char(125, '999') to_char...栗子: SELECT to_char(-12, 'S9999') FROM DUAL 结果就是负数:-12 to_char 的一些栗子: 输入 输出 to_char(sysdate,'Day, HH12...tt> to_char(-0.1,'99.99') ' -.10' to_char(-0.1,'FM9.99') '-.1' to_char(0.1,'0.9') to_char(1485,'9G999') ' 1 485' to_char(148.5,'999.999') ' 148.500' to_char(148.5,
ToChar3(){ &sql( SELECT TO_CHAR(1000,'9999'), TO_CHAR(10,'9999')...第二个 TO_CHAR 也可能返回此值,但显示的分隔符取决于区域设置。...(10,'99.99'), TO_CHAR(-10,'99.99'), TO_CHAR(10,'S99.99'), TO_CHAR(-10...,'S99.99'), TO_CHAR(10,'99.99S'), TO_CHAR(-10,'99.99S') INTO...(1234567.89,'9'), TO_CHAR(1234567.89,'99'), TO_CHAR(1234567.89,'99D99')
SQL函数 TO_CHAR(一)将日期、时间戳或数字转换为格式化字符串的字符串函数。...如果省略,TO_CHAR 将 tochar-expression 作为规范数字返回。描述名称 TO_CHAR 和 TOCHAR 是可互换的,并且支持 Oracle 兼容性。...如果 TO_CHAR 无法识别任何格式代码元素(例如,格式是空字符串)或数字格式的位数少于 tochar 表达式值,则 TO_CHAR 返回井号 (#) 字符。...如果 tochar-expression 为非数字,则 TO_CHAR 返回 0。如果 tochar-expression 为 null,则 TO_CHAR 返回 null。...如预期的那样,第一个 TO_CHAR 将日期整数转换为相应的格式化日期字符串。但是,第二个 TO_CHAR 给出了意想不到的结果。
SQL函数 TO_CHAR(二)可以使用 TO_CHAR 将以下 tochar 表达式时间值转换为格式化的时间字符串: $HOROLOG 时间整数($HOROLOG 的时间部分)。...SELECT TO_CHAR(SYSDATE,'HH12:MI:SS PM'), TO_CHAR(CURRENT_TIMESTAMP(6),'HH12:MI:SS PM') 11...&sql( SELECT TO_CHAR('15:35:43.99', 'HH12:MI:SS PM'), TO_CHAR('15^35^43.99...数字到字符串的转换可以使用 TO_CHAR 将数字转换为格式化的数字字符串。下表列出了使用 TO_CHAR 的格式参数的有效格式代码。...如果 tochar-expression 为 null,则 TO_CHAR 返回 null。
处理数字 1、to_char(number,'格式'); select to_char(88877) from dual; select to_char(1234567890,'099999999999999...' to_char(-0.1,'FM9.99') '-.1' to_char(0.1,'0.9') ' 0.1' to_char(12,'9990999.9') ' 0012.0' to_char...(12,'FM9990999.9') '0012' to_char(485,'999') ' 485' to_char(-485,'999') '-485' to_char(485,'...9 9 9') ' 4 8 5' to_char(1485,'9,999') ' 1,485' to_char(1485,'9G999') ' 1 485' to_char(148.5...' to_char(-485,'999S') '485-' to_char(-485,'999MI') '485-' to_char(485,'999MI') '485' to_char
在实际的工作中会经常会用到to_char()、to_date()函数来对时间、日期进行处理。...select sysdate,to_char(sysdate,'yyyy-mm-dd')from dual; select sysdate,to_char(sysdate,'yyyy/mm/...dd')from dual; select sysdate,to_char(sysdate,'yyyymmdd')from dual; select sysdate,to_char...()可以得到日期中的年、月、日、时、分 select sysdate,to_char(sysdate,'yyyy')from dual; select sysdate,to_char...select accept_time,to_char(accept_time,'mi') from TMP_WW_0615_GYTS_S2 where to_char(accept_time
遇到一个SQL,记录一下 select to_char(参数,'FM990.00') from 表格 刚看到FM990.00确实不知道什么意思,通过网上资料,知道了 0表示:如果参数(double或者float...有两位小数,当然格式就不仅仅是FM990.00,格式就是无限个,可以为FM999999.99或者FM9999990.00等等 上面是oracle的做法,mysql可以用format函数: select to_char
substr(to_date('20191221','yyyy-MM-dd'),0,11 )from dual结果是这样的:图片于是我换了种写法:先把字符串转化为日期,然后再转为格式化的字符串select to_char
并且发现这个sql语句中使用了To_char函数。 例如如下的这个表空间使用率的sql。...col "FREE(MB)" format a20 col "USED(%)" format 990.99 select tablespace_name, to_char...(nvl(total_bytes / 1024,0),'999,999,999') as "size(MB)", to_char(nvl((total_bytes - free_total_bytes...按照oracle的文档313135.1说明,Cursor_sharing参数的值会影响to_char处理对象列的表示格式。但是由于会影响共享cursor的动作,所有最终没有被修正。...或者将to_char(nvl(total_bytes / 1024,0),'999,999,999') 中的 999,999,999去掉会解决该问题。
日期和字符转换函数用法(to_date,to_char) select to_char(sysdate,'yyyy-mm-dd hh24:mi:ss') as nowTime from dual;... //日期转化为字符串 select to_char(sysdate,'yyyy') as nowYear from dual; //获取时间的年 select to_char(...dual; //获取时间的日 select to_char(sysdate,'hh24') as nowHour from dual; //获取时间的时 select to_char...所以,当时间需要精确的时候,觉得to_char还是必要的 7....dual; TO_CHAR(SYSDATE,'Y') -------------------- 5 SQL> select to_char(sysdate,'YY') from dual; TO_CHAR
字符函数 数学函数 日期函数 转换函数 to_char(数字/日期)是把日期或数字转换为字符串 将数字转换成指定格式 to_char(1210.73, '9999.9') -- would...return '1210.7' to_char(1210.73, '9,999.99') -- would return '1,210.73' to_char(1210.73, '$9,999.00...to_char(sysdate, 'yyyy/mm/dd');--would return '2003/07/09' select to_char(sysdate, 'yyyy-mm-dd hh24...from a; ------> 2015-08-28 02:43:15 to_char(sysdate, 'yyyy/mm/dd');--would return '2003/07/09' to_char...'10月 21, 2015' to_char(sysdate, 'FMMonth DD, YYYY');--would return 'July 9, 2003' to_char(sysdate, 'MON
先拿大于1的数试验,没问题 SQL> select to_char(1.1,'99999999.99') from dual; TO_CHAR(1.1, ------------ 1.10....10 --结果有问题 --貌似可以用这种方式 SQL> select to_char(.1,'999999990.99') from dual; TO_CHAR(.1,'9 -------------...0.10 --或者 SQL> select to_char(.1,'fm9999999990.00') from dual; TO_CHAR(.1,'FM -------------...SQL> select to_char(.1,'999999990.99'),length(to_char(.1,'999999990.99')) from dual; TO_CHAR(.1,'9 LENGTH...13 SQL> select to_char(.1,'fm9999999990.00') ,length(to_char(.1,'fm9999999990.00')) from dual; TO_CHAR
select to_date (p_date, 'yyyymm') into v_date from dual; return to_char...select to_date (p_date, 'yyyy-mm') into v_date from dual; return to_char(...v_date ,'mm') || '月-' || to_char( v_date,'yy'); elsif ( length(p_date)...(v_date,'dd') || '-' || to_char( v_date,'mm') || '月-' || to_char(v_date,'yy'); elsif ( length...(v_date,'dd') || '-' || to_char( v_date,'mm') || '月-' || to_char(v_date,'yy'); end if
WHERE TO_CHAR(UPD_DATE,'YYYY/MM') = TO_CHAR(TO_DATE(TO_CHAR(SYSDATE,'YYYY/MM') ||'/01','YYYY/MM/DD..., SUM(decode(TO_CHAR(a.telfeedate,'mm'), '02', a.factration)) AS FRI, SUM(decode(TO_CHAR(a.telfeedate...APR, SUM(decode(TO_CHAR(a.telfeedate,'mm'), '05', a.factration)) AS MAY, SUM(decode(TO_CHAR(a.telfeedate...JUL, SUM(decode(TO_CHAR(a.telfeedate,'mm'), '08', a.factration)) AS AGU, SUM(decode(TO_CHAR(a.telfeedate...OCT, SUM(decode(TO_CHAR(a.telfeedate,'mm'), '11', a.factration)) AS NOV, SUM(decode(TO_CHAR(a.telfeedate
select to_char(sysdate,’yyyy-mm-dd hh24:mi:ss’) from dual; ORACLE里获取一个时间的年、季、月、周、日的函数 select to_char...(sysdate, ‘yyyy’ ) from dual; –年 select to_char(sysdate, ‘MM’ ) from dual; –月 select to_char(sysdate..., ‘dd’ ) from dual; –日 select to_char(sysdate, ‘Q’) from dual; –季 select to_char(sysdate, ‘iw’) from...; select to_char(sysdate,’yyyy-MM-dd HH24:mm:ss’) from dual; select to_char(sysdate,’yy-mm-dd...(to_char(SYSDATE,’d’)-1) – 6, to_char(SYSDATE,’yyyymmdd’)-to_number(to_char(SYSDATE,’d’)-1) from dual
', 1, 0)) "h0", SUM(DECODE(TO_CHAR(first_time, 'hh24'), '01', 1, 0)) "h1", SUM(DECODE(TO_CHAR...SUM(DECODE(TO_CHAR(first_time, 'hh24'), '07', 1, 0)) "h7", SUM(DECODE(TO_CHAR(first_time, 'hh24...(TO_CHAR(first_time, 'hh24'), '10', 1, 0)) "h10", SUM(DECODE(TO_CHAR(first_time, 'hh24'), '11'...TO_CHAR(first_time, 'hh24'), '13', 1, 0)) "h13", SUM(DECODE(TO_CHAR(first_time, 'hh24'), '14',..."h17", SUM(DECODE(TO_CHAR(first_time, 'hh24'), '18', 1, 0)) "h18", SUM(DECODE(TO_CHAR(
h0, SUM (DECODE (TO_CHAR (first_time, 'hh24'), '01', 1, 0)) "h1", SUM (DECODE (TO_CHAR (first_time,...(TO_CHAR (first_time, 'hh24'), '04', 1, 0)) "h4", SUM (DECODE (TO_CHAR (first_time, 'hh24'), '05', 1...(TO_CHAR (first_time, 'hh24'), '09', 1, 0)) "h9", SUM (DECODE (TO_CHAR (first_time, 'hh24'), '10', 1...(TO_CHAR (first_time, 'hh24'), '14', 1, 0)) "h14", SUM (DECODE (TO_CHAR (first_time, 'hh24'), '15',...(TO_CHAR (first_time, 'hh24'), '19', 1, 0)) "h19", SUM (DECODE (TO_CHAR (first_time, 'hh24'), '20',
用9个字符长度表示的月份名 Select to_char(sysdate,’Month’) from dual; May后跟6个空格表示5月 WW 当年第几周 Select to_char(sysdate...to_char(sysdate,’DD’) from dual; 04 10月4日为第4天 D 周内第几天 Select to_char(sysdate,’D’) from dual; 5 2002年...to_char(sysdate,’HH’) from dual; 02 午夜2点过8分为02 HH24 24小时制 Select to_char(sysdate,’HH24’) from dual;...按照每月进行统计 SQL> select to_char(sysdate,’mm’) from dual group by to_char(sysdate,’mm’); TO — 06 6。...按照每季度进行统计 SQL> select to_char(sysdate,’q’) from dual group by to_char(sysdate,’q’); T – 2 7。
select sysdate,to_char(sysdate,'yyyy-mm-dd HH24:MI:SS') from dual; select sysdate,to_char(sysdate,'yyyy...') from dual;--年 select sysdate,to_char(sysdate,'Q') from dual;--季度 select sysdate,to_char(sysdate,'mm...') from dual;--月 select sysdate,to_char(sysdate,'dd') from dual;--日 select sysdate,to_char(sysdate,'ddd...') from dual;--年中的第几天 select sysdate,to_char(sysdate,'WW') from dual;--年中的第几个星期 select sysdate,to_char...select sysdate,to_char(sysdate,'Mi') from dual;--分钟 select sysdate,to_char(sysdate,'ss') from dual;-
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