ï»??xml version="1.0" encoding="utf-8" standalone="yes"?>日韩一区二区精品,精品精品久久,永久亚洲成a人片777777http://www.aygfsteel.com/wuxufeng8080/category/20016.htmlzh-cnFri, 09 Mar 2007 03:13:44 GMTFri, 09 Mar 2007 03:13:44 GMT60½Ž€å•çš„ORACLE分页sql语句(ZT) http://www.aygfsteel.com/wuxufeng8080/articles/102609.html风ähå›?/dc:creator>风ähå›?/author>Thu, 08 Mar 2007 07:55:00 GMThttp://www.aygfsteel.com/wuxufeng8080/articles/102609.html (t¨©ng)

select * from (select rownum rdd,t_table.* from t_table where rownum<=8) where (t¨©ng) rdd>6



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oracle 日期处理http://www.aygfsteel.com/wuxufeng8080/articles/102302.html风ähå›?/dc:creator>风ähå›?/author>Wed, 07 Mar 2007 01:02:00 GMThttp://www.aygfsteel.com/wuxufeng8080/articles/102302.html格式转化åQ?/font>
select to_char(sysdate,'mm/dd/yy') from dual
其中sysdate是系¾lŸæ—¥æœŸï¼Œä½ å¯æ¢æˆè¡¨ä¸­çš„å­—ŒD?br />
日期比较åQ?/font>
日期字段直接相减åQŒèŽ·å¾—çš„ž®±æ˜¯ä»¥å¤©ä¸ºå•位的旉™—´é—´éš”
select floor(to_date('2004-12-03','yyyy-mm-dd') - to_date('2004-8-8','yyyy-mm-dd')) from dual

˜q™æ ·ž®Þp®¡½Ž—出来了(ji¨£n)~~~
select * from aa_temp where idate> to_date('1996-01-01','yyyy-mm-dd')

要找某日期字ŒDµå¤§äºŽä¸€ä¸ªå›ºå®šæ—¥æœŸçš„记录åQŒä»¥ä¸?¿Uå†™æ³•:(x¨¬)
to_date('2007-02-01 09:00:00','yyyy-mm-dd hh24:mi:ss')<字段�img src ="http://www.aygfsteel.com/wuxufeng8080/aggbug/102302.html" width = "1" height = "1" />

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Oracle自增字段的实çŽ?/title><link>http://www.aygfsteel.com/wuxufeng8080/articles/101845.html</link><dc:creator>风ähå›?/dc:creator><author>风ähå›?/author><pubDate>Mon, 05 Mar 2007 02:28:00 GMT</pubDate><guid>http://www.aygfsteel.com/wuxufeng8080/articles/101845.html</guid><description><![CDATA[最˜q‘在做系¾lŸçš„Oracle¿UÀL¤åQŒéœ€è¦ä»ŽMySQL¿UÀL¤åˆ°Oracle中,在MySQL中有自增¾cÕdž‹çš„å­—ŒDµï¼Œåœ¨Oracle中却没有åQŒéœ€è¦ç”¨å…¶å®ƒçš„办法实现。在Oracle中要用一个SEQUENCE和触发器实现。下面是我的一个实玎ͼš(x¨¬)<br /><div style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: #e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: windowtext 0.5pt solid"><div><span style="COLOR: #008080"> (t¨©ng)1</span><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /><span style="COLOR: #0000ff">CREATE</span><span style="COLOR: #000000"> (t¨©ng)</span><span style="COLOR: #0000ff">TABLE</span><span style="COLOR: #000000"> (t¨©ng)FOO<br /></span><span style="COLOR: #008080"> (t¨©ng)2</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" />(<br /></span><span style="COLOR: #008080"> (t¨©ng)3</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /> (t¨©ng) (t¨©ng) (t¨©ng)</span><span style="COLOR: #0000ff">INDEX</span><span style="COLOR: #000000"> (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng)</span><span style="FONT-WEIGHT: bold; COLOR: #000000">INT</span><span style="COLOR: #000000"> (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng)</span><span style="COLOR: #808080">NOT</span><span style="COLOR: #000000"> (t¨©ng)</span><span style="COLOR: #0000ff">NULL</span><span style="COLOR: #000000">,<br /></span><span style="COLOR: #008080"> (t¨©ng)4</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /> (t¨©ng) (t¨©ng) (t¨©ng)ABC (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng)</span><span style="FONT-WEIGHT: bold; COLOR: #000000">VARCHAR2</span><span style="COLOR: #000000">(</span><span style="FONT-WEIGHT: bold; COLOR: #800000">128</span><span style="COLOR: #000000">),<br /></span><span style="COLOR: #008080"> (t¨©ng)5</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /> (t¨©ng) (t¨©ng) (t¨©ng)DEF (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng)</span><span style="FONT-WEIGHT: bold; COLOR: #000000">VARCHAR2</span><span style="COLOR: #000000">(</span><span style="FONT-WEIGHT: bold; COLOR: #800000">128</span><span style="COLOR: #000000">),<br /></span><span style="COLOR: #008080"> (t¨©ng)6</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /> (t¨©ng) (t¨©ng) (t¨©ng)</span><span style="COLOR: #0000ff">PRIMARY</span><span style="COLOR: #000000"> (t¨©ng)</span><span style="COLOR: #0000ff">KEY</span><span style="COLOR: #000000"> (t¨©ng)(INDEXID)<br /></span><span style="COLOR: #008080"> (t¨©ng)7</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" />) (t¨©ng)TABLESPACE (t¨©ng)</span><span style="COLOR: #0000ff">TEMP</span><span style="COLOR: #000000">;<br /></span><span style="COLOR: #008080"> (t¨©ng)8</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /><br /></span><span style="COLOR: #008080"> (t¨©ng)9</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /></span><span style="COLOR: #0000ff">CREATE</span><span style="COLOR: #000000"> (t¨©ng)SEQUENCE (t¨©ng)FOO_INDEXID (t¨©ng)I(y¨ªng)NCREMENT (t¨©ng)</span><span style="COLOR: #0000ff">BY</span><span style="COLOR: #000000"> (t¨©ng)</span><span style="FONT-WEIGHT: bold; COLOR: #800000">1</span><span style="COLOR: #000000"> (t¨©ng)START (t¨©ng)</span><span style="COLOR: #0000ff">WITH</span><span style="COLOR: #000000"> (t¨©ng)</span><span style="FONT-WEIGHT: bold; COLOR: #800000">1</span><span style="COLOR: #000000"> (t¨©ng)MAXVALUE (t¨©ng)</span><span style="FONT-WEIGHT: bold; COLOR: #800000">999999999999</span><span style="COLOR: #000000"> (t¨©ng)CYCLE (t¨©ng)NOCACHE;<br /></span><span style="COLOR: #008080">10</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /><br /></span><span style="COLOR: #008080">11</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /></span><span style="COLOR: #0000ff">CREATE</span><span style="COLOR: #000000"> (t¨©ng)</span><span style="COLOR: #808080">OR</span><span style="COLOR: #000000"> (t¨©ng)</span><span style="COLOR: #ff00ff">REPLACE</span><span style="COLOR: #000000"> (t¨©ng)</span><span style="COLOR: #0000ff">TRIGGER</span><span style="COLOR: #000000"> (t¨©ng)I(y¨ªng)NSERT_FOO_INDEXID<br /></span><span style="COLOR: #008080">12</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" />BEFORE (t¨©ng)</span><span style="COLOR: #0000ff">INSERT</span><span style="COLOR: #000000"> (t¨©ng)</span><span style="COLOR: #0000ff">ON</span><span style="COLOR: #000000"> (t¨©ng)FOO<br /></span><span style="COLOR: #008080">13</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" />REFERENCING<br /></span><span style="COLOR: #008080">14</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /> (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng)NEW (t¨©ng)</span><span style="COLOR: #0000ff">AS</span><span style="COLOR: #000000"> (t¨©ng)new<br /></span><span style="COLOR: #008080">15</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /> (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng)OLD (t¨©ng)</span><span style="COLOR: #0000ff">AS</span><span style="COLOR: #000000"> (t¨©ng)old<br /></span><span style="COLOR: #008080">16</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /></span><span style="COLOR: #0000ff">FOR</span><span style="COLOR: #000000"> (t¨©ng)EACH (t¨©ng)ROW<br /></span><span style="COLOR: #008080">17</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /></span><span style="COLOR: #0000ff">BEGIN</span><span style="COLOR: #000000"><br /></span><span style="COLOR: #008080">18</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /> (t¨©ng) (t¨©ng) (t¨©ng) (t¨©ng)</span><span style="COLOR: #0000ff">SELECT</span><span style="COLOR: #000000"> (t¨©ng)FOO_INDEXID.NEXTVAL (t¨©ng)</span><span style="COLOR: #0000ff">INTO</span><span style="COLOR: #000000"> (t¨©ng):new.INDEXID (t¨©ng)</span><span style="COLOR: #0000ff">FROM</span><span style="COLOR: #000000"> (t¨©ng)DUAL;<br /></span><span style="COLOR: #008080">19</span><span style="COLOR: #000000"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" /></span><span style="COLOR: #0000ff">END</span><span style="COLOR: #000000">;</span></div></div><img src ="http://www.aygfsteel.com/wuxufeng8080/aggbug/101845.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/wuxufeng8080/" target="_blank">风ähå›?/a> 2007-03-05 10:28 <a href="http://www.aygfsteel.com/wuxufeng8080/articles/101845.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>oracle 日期函数介绍http://www.aygfsteel.com/wuxufeng8080/articles/99465.html风ähå›?/dc:creator>风ähå›?/author>Mon, 12 Feb 2007 07:39:00 GMThttp://www.aygfsteel.com/wuxufeng8080/articles/99465.html1、add_months()用于从一个日期值增加或减少一些月ä»?
date_value:=add_months(date_value,number_of_months)
例:(x¨¬)
SQL> select add_months(sysdate,12) "Next Year" from dual;
 (t¨©ng) (t¨©ng)
Next Year
----------
13-11�04
 (t¨©ng) (t¨©ng)
SQL> select add_months(sysdate,112) "Last Year" from dual;
 (t¨©ng) (t¨©ng)
Last Year
----------
13-3�-13
 (t¨©ng) (t¨©ng)
SQL> (t¨©ng) (t¨©ng)
 (t¨©ng) (t¨©ng)
2、current_date()˜q”回当前ä¼?x¨¬)放时区中的当前日æœ?
date_value:=current_date
SQL> column sessiontimezone for a15
SQL> select sessiontimezone,current_date from dual;
 (t¨©ng) (t¨©ng)
SESSIONTIMEZONE CURRENT_DA
--------------- ----------
+08:00 (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) 13-11æœ?03
 (t¨©ng) (t¨©ng)
SQL> alter session set time_zone='-11:00'
 (t¨©ng)  (t¨©ng)2 (t¨©ng) (t¨©ng)/
 (t¨©ng) (t¨©ng)
ä¼?x¨¬)话已更攏V€?
 (t¨©ng) (t¨©ng)
SQL> select sessiontimezone,current_timestamp from dual;
 (t¨©ng) (t¨©ng)
SESSIONTIMEZONE CURRENT_TIMESTAMP
--------------- ------------------------------------
-11:00 (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) 12-11æœ?03 04.59.13.668000 下午 -11:
 (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng) (t¨©ng)00
 (t¨©ng) (t¨©ng)
SQL> (t¨©ng) (t¨©ng)
 (t¨©ng) (t¨©ng)
3、current_timestamp()以timestamp with time zone数据¾cÕdž‹˜q”回当前ä¼?x¨¬)放时区中的当前日æœ?
timestamp_with_time_zone_value:=current_timestamp([timestamp_precision])
SQL> column sessiontimezone for a15
SQL> column current_timestamp format a36
SQL> select sessiontimezone,current_timestamp from dual;
 (t¨©ng) (t¨©ng)
SESSIONTIMEZONE CURRENT_TIMESTAMP
--------------- ------------------------------------
+08:00 (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) 13-11æœ?03 11.56.28.160000 上午 +08:
 (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng) (t¨©ng)00
 (t¨©ng) (t¨©ng)
SQL> alter session set time_zone='-11:00'
 (t¨©ng)  (t¨©ng)2 (t¨©ng) (t¨©ng)/
 (t¨©ng) (t¨©ng)
ä¼?x¨¬)话已更攏V€?
 (t¨©ng) (t¨©ng)
SQL> select sessiontimezone,current_timestamp from dual;
 (t¨©ng) (t¨©ng)
SESSIONTIMEZONE CURRENT_TIMESTAMP
--------------- ------------------------------------
-11:00 (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) 12-11æœ?03 04.58.00.243000 下午 -11:
 (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng) (t¨©ng)00
 (t¨©ng) (t¨©ng)
SQL> (t¨©ng) (t¨©ng)
 (t¨©ng) (t¨©ng)
4、dbtimezone()˜q”回时区
varchar_value:=dbtimezone
SQL> select dbtimezone from dual;
 (t¨©ng) (t¨©ng)
DBTIME
------
-07:00
 (t¨©ng) (t¨©ng)
SQL> (t¨©ng) (t¨©ng)
 (t¨©ng) (t¨©ng)
5、extract()扑ևºæ—¥æœŸæˆ–间隔值的字段å€?
date_value:=extract(date_field from [datetime_value|interval_value])
SQL> select extract(month from sysdate) "This Month" from dual;
 (t¨©ng) (t¨©ng)
This Month
----------
 (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng)11
 (t¨©ng) (t¨©ng)
SQL> select extract(year from add_months(sysdate,36)) "3 Years Out" from dual;
 (t¨©ng) (t¨©ng)
3 Years Out
-----------
 (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng) (t¨©ng)2006
 (t¨©ng) (t¨©ng)
SQL> (t¨©ng) (t¨©ng)
 (t¨©ng) (t¨©ng)
6、last_day()˜q”回包含äº?ji¨£n)日期参数的月䆾的最后一天的日期
date_value:=last_day(date_value)
SQL> select last_day(date'2000-02-01') "Leap Yr?" from dual;
 (t¨©ng) (t¨©ng)
Leap Yr?
----------
29-2�-00
 (t¨©ng) (t¨©ng)
SQL> select last_day(sysdate) "Last day of this month" from dual;
 (t¨©ng) (t¨©ng)
Last day o
----------
30-11�03
 (t¨©ng) (t¨©ng)
SQL> (t¨©ng) (t¨©ng)
 (t¨©ng) (t¨©ng)
7、localtimestamp()˜q”回ä¼?x¨¬)话中的日期和时é?
timestamp_value:=localtimestamp
SQL> column localtimestamp format a28
SQL> select localtimestamp from dual;
 (t¨©ng) (t¨©ng)
LOCALTIMESTAMP
----------------------------
13-11�03 12.09.15.433000
下午
 (t¨©ng) (t¨©ng)
SQL> select localtimestamp,current_timestamp from dual;
 (t¨©ng) (t¨©ng)
LOCALTIMESTAMP (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng)CURRENT_TIMESTAMP
---------------------------- ------------------------------------
13-11æœ?03 12.09.31.006000 (t¨©ng)  (t¨©ng)13-11æœ?03 12.09.31.006000 下午 +08:
下午 (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) 00
 (t¨©ng) (t¨©ng)
SQL> alter session set time_zone='-11:00';
 (t¨©ng) (t¨©ng)
ä¼?x¨¬)话已更攏V€?
 (t¨©ng) (t¨©ng)
SQL> select localtimestamp,to_char(sysdate,'DD-MM-YYYY HH:MI:SS AM') "SYSDATE" from dual;
 (t¨©ng) (t¨©ng)
LOCALTIMESTAMP (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng)SYSDATE
---------------------------- ------------------------
12-11æœ?03 05.11.31.259000 (t¨©ng)  (t¨©ng)13-11-2003 12:11:31 下午
下午
 (t¨©ng) (t¨©ng)
SQL> (t¨©ng) (t¨©ng)
 (t¨©ng) (t¨©ng)
8、months_between()判断两个日期之间的月份数�
number_value:=months_between(date_value,date_value)
SQL> select months_between(sysdate,date'1971-05-18') from dual;
 (t¨©ng) (t¨©ng)
MONTHS_BETWEEN(SYSDATE,DATE'1971-05-18')
----------------------------------------
 (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) 389.855143
 (t¨©ng) (t¨©ng)
SQL> select months_between(sysdate,date'2001-01-01') from dual;
 (t¨©ng) (t¨©ng)
MONTHS_BETWEEN(SYSDATE,DATE'2001-01-01')
----------------------------------------
 (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) (t¨©ng)  (t¨©ng) 34.4035409
 (t¨©ng) (t¨©ng)
SQL> (t¨©ng) (t¨©ng)
 (t¨©ng) (t¨©ng)
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10、date = to_date('2005-3-16 16:55:36','YYYY-MM-DD HH24:MI:SS');




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