數學之路-sas備忘(16)，之路-sas備忘16

數學之路-sas備忘(16)，之路-sas備忘16

SAS日期及時間格式

data _null_;
mydate ='7MAR13'd;
put mydate YYMMDDP10.;
put mydate YYMMDDN8.;
put mydate YYMMDDC10.;
put mydate YYMMDDS10.;
put mydate YYMMDD10.;
put mydate WEEKDATE.;
put mydate WORDDATE.;
run;

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2013.03.07
20130307
2013:03:07
2013/03/07
2013-03-07
      Thursday, March 7, 2013
     March 7, 2013
NOTE: “DATA 語句”所用時間（總處理時間）:
      實際時間          0.01 秒
      CPU 時間          0.01 秒

==============

data _null_;
mytime ='17:25:38't;
put mytime HHMM.;
put mytime TIME.;
put mytime TIMEAMPM.;
put mytime HOUR.;
put mytime TOD.;
run;

17:26
17:25:38
 5:25:38 PM
17
17:25:38

data _null_;
now=datetime();
put now DATEAMPM.;
put now DATETIME.;
put now nldatm.;
run;

30MAR15:03:12:14 PM
30MAR15:15:12:14
2015年03月30日 15時12分14秒

data _null_;
now=date();
put now YEAR.;
put now MONTH.;
put now DAY.;
run;

2015
 3
30
NOTE: “DATA 語句”所用時間（總處理時間）:
      實際時間          0.00 秒
      CPU 時間          0.00 秒

data _null_;
/*當前日期及時間*/
now=date();
put now YEAR.;
put now MONTH.;
put now DAY.;
put now=nldate.;
t1=time();
put t1=time.;
put t1=nltimap15.;
d1=today();
put d1=nldate.;
d2=today();
put d2=nldate.;


run;

2015
 3
30
now=2015年03月30日
t1=15:21:50
t1=下午03:21:50
d1=2015年03月30日
d2=2015年03月30日
NOTE: “DATA 語句”所用時間（總處理時間）:
      實際時間          0.01 秒
      CPU 時間          0.01 秒

Writes datetime values in the form ddmmmyy:hh:mm:ss.ss.

Category:	Date and Time
Alignment:	Right
Restriction:	If w–d< 17, SAS truncates the decimal values.
Interaction:	When the DECIMALCONV= system option is set to STDIEEE, the output that is written using this format might differ slightly from previous releases. For more information, see DECIMALCONV= System Option in SAS System Options: Reference.

Syntax DATETIMEw.d
Syntax Description w

specifies the width of the output field.

Default	16
Range	7–40
Tip	SAS requires a minimum w value of 16 to write a SAS datetime value with the date, hour, and seconds. Add an additional two places to w and a value to d to return values with optional decimal fractions of seconds.

d

specifies the number of digits to the right of the decimal point in the seconds value. This argument is optional.

Range	0–39
Requirement	must be less than w

Details The DATETIMEw.d format writes SAS datetime values in the form ddmmmyy:hh:mm:ss.ss: ddis an integer that represents the day of the month. mmm is the first three letters of the month name. yyis a two-digit integer that represents the year. hhis an integer that represents the hour in 24–hour clock time. mmis an integer that represents the minutes. ss.ssis the number of seconds to two decimal places. Example The example table uses the input value of 1668138559, which is the SAS datetime value that corresponds to 3:49:19 a.m. on November 10, 2012.

SAS Statement	Result
	----+----1----+----2----+
put event datetime.;	10NOV12:03:49:19
put event datetime7.;	10NOV12
put event datetime12.;	10NOV12:03
put event datetime18.;	10NOV12:03:49:19
put event datetime18.1;	10NOV12:03:49:19.0
put event datetime19.;	10NOV2012:03:49:19
put event datetime20.1;	10NOV2012:03:49:19.0
put event datetime21.2;	10NOV2012:03:49:19.00

============================data _null_;
/*當前日期及時間
*datetime基本格式*
*/


mydt=datetime();
put mydt datetime21.2;*2為定要在秒值小數點右邊的位元。;
put mydt datetime.; 
put mydt datetime7.; 
put mydt datetime12.; 
put mydt datetime18.; 
put mydt datetime18.1; 
put mydt datetime19.; 
put mydt datetime20.1; 

run;

30MAR2015:17:25:51.91
30MAR15:17:25:52
30MAR15
  30MAR15:17
  30MAR15:17:25:52
30MAR15:17:25:51.9
 30MAR2015:17:25:52
30MAR2015:17:25:51.9
NOTE: “DATA 語句”所用時間（總處理時間）:
      實際時間          0.01 秒
      CPU 時間          0.00 秒

===============

DATETIMEw. Informat

Syntax DATETIMEw. Syntax Description w

specifies the width of the input field.

Default	18
Range	13–40

Details The datetime values must be in the following form: ddmmmyy or ddmmmyyyy, followed by a blank or special character, followed by hh:mm:ss.ss (the time): dd is an integer between 01 and 31 that represents the day of the month. mmmis the first three letters of the month name. yy or yyyyis a two-digit or four-digit integer that represents the year. hh is an integer between 00 and 23 that represents hours. mmis an integer between 00 and 59 that represents minutes. ss.ss is the number of seconds ranging from 00–59 with the fraction of a second following the decimal point. DATETIMEw. requires values for both the date and the time. However, the ss.ss portion is optional. Note: SAS interprets a two-digit year as belonging to the 100-year span that is defined by the YEARCUTOFF= system option. Note: SAS can read time values with AM and PM in them. Comparisons The DATETIMEw.d informat reads datetime values with optional separators in the form dd-mmm-yy<yy> hh:mm:ss.ss AM|PM, and the date and time can be separated by a special character. The MDYAMPMw.d in format reads datetime values with optional separators in the form mm-dd-yy<yy> hh:mm:ss.ss AM | PM, and requires a space between the date and the time. The YMDDTTMw.d informat reads datetime values with required separators in the form <yy>yy-mm-dd/hh:mm:ss.ss. Example

input date_and_time datetime20.;

Data Line	Result
----+----1----+----2
16mar12:11:23:07.4	1647516187.4
16mar2012/11:23:07.4	1647516187.4
16mar2012/11:23 PM	1647559380.0

===========data x11;
/*
*datetime輸入與輸出格式*
*/
input mydate YMDDTTM21.2;
format mydate datetime21.2;
cards;
2015-05-15/15:28:19.2
;
proc print;
run;

Writes SAS date values in the form <yy>yymmdd or <yy>yy–mm–dd, where a hyphen is the separator and the year appears as either 2 or 4 digits.

YYMMDDw.Arguments w

specifies the width of the output field.

Default	8
Range	2–10
Interaction	When w has a value of from 2 to 5, the date appears with as much of the year and the month as possible. When w is 7, the date appears as a two-digit year without hyphens.

Details The YYMMDDw. format writes SAS date values in the form <yy>yymmdd or <yy>yy–mm–dd. Here is an explanation of the syntax: <yy>yyis a two-digit or four-digit integer that represents the year. –is the separator.mmis an integer that represents the month. ddis an integer that represents the day of the month. Comparisons

• The YYMMDDw.d format is similar to the YYMMDDxw.d format, except the YYMMDDxw.d format contains separators, such as a colon, slash, or period between the year, month, and day.

Example The following examples use the input value of 18720, which is the SAS date value that corresponds to April 3, 2011.

Statements	Results
	----+----1----+
a=put(18720,yymmdd2.);	11
a=put(18720,yymmdd3.);	11
a=put(18720,yymmdd4.);	1104
a=put(18720,yymmdd5.);	11-04
a=put(18720,yymmdd6.);	110403
a=put(18720,yymmdd7.);	110403
a=put(18720,yymmdd8.);	11-04-03
a=put(18720,yymmdd10.);	2011-04-03