数学之路-sas备忘(16)

data _null_; mydate =7MAR13d; put mydate YYMMDDP10.; put mydate YYMMDDN8.; put mydate YYMMDDC10.; put mydate YYMMDDS10.; put mydate YYMMDD10.; put mydate WEEKDATE.; put mydate WORDDATE.; run; 2013.03.07 20130307 2013:03:07 2013/03/07 2013-

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;

2013.03.07

20130307

2013:03:07

2013/03/07

2013-03-07

      Thursday, March 7, 2013

     March 7, 2013

NOTE: “DATA 语句”所用时间（总处理时间）:

      实际时间          0.01 秒

      CPU 时间          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时12分14秒

 

 

 

 

 

data _null_;

now=date();

put now YEAR.;

put now MONTH.;

put now DAY.;

run;

 

2015

 3

30

NOTE: “DATA 语句”所用时间（总处理时间）:

      实际时间          0.00 秒

      CPU 时间          0.00 秒

 

 

 

data _null_;

/*当前日期及时间*/

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 语句”所用时间（总处理时间）:

      实际时间          0.01 秒

      CPU 时间          0.01 秒

 

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

Category:	Date and Time
Alignment:	Right
Restriction:	If w–d
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_;
run;

30MAR2015:17:25:51.91

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

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 hh:mm:ss.ss AM|PM, and the date and time can be separated by a special character. The MDYAMPMw.d in forma【本文来自鸿网互联 (http://www.68idc.cn)】t reads datetime values with optional separators in the form mm-dd-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-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

Writes SAS date values in the form yymmdd or 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 yymmdd or yy–mm–dd. Here is an explanation of the syntax: 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

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