month=month(date); year=year(date); procsortdata=a; by year month; datab; set a; by year month; if last.month; /*保留每月最后一个观测值 */ run; 删除变量语句DROP与保留变量语句KEEP 例4.29 Drop语句与数据集中的drop=选项 。 data
else if lengthn(strip(__dtpart)) = 0 then call missing(year, month, day); else do; if length(strip(__dtpart)) = 4 then put %sysfunc(compress("WARN ING:")) dattim "insufficient to determine if date part represents YYYY or DDMM or MMDD."; else if length(strip(__dtpart)) in ...
Some date string representations cannot accurately be mapped to one specific date. The formats below are treated by making up day, month, and year values as needed: Day of Month (DAY9). E.g.: 25 Day of Week (DOWNAME11). E.g.: Thursday Day of Week (DOWNAME1). E.g.: Thu Day,...
Compute the first or last day of a month or year Every year at Halloween, I post an article that shows a SAS trick that is a real treat. This article shows how to use the INTNX function to find dates that are related to a specified date. The INTNX function is a sweet treat, inde...
SAS Training Points expire in 12 months. Please check with your education account representative if you are unsure of your account's expiration date. Expiration dates cannot be extended; however, there are several ways to ensure you do not lose your points: ...
public static final java.lang.String AJAX_CONTROLLER_URL "AJAX_CONTROLLER_URL" public static final java.lang.String ALL_VIEWERS "ALL_VIEWERS" public static final java.lang.String APNAME "APNAME" public static final java.lang.String BASEURL "BASEURL" public static final java.lang.String CMDID...
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2. Reading Value Labels Neither sas7bdat and pandas.read_sas gives the possibility to read sas7bcat catalog files. Pyreadstat can do that and also extract value labels from SPSS and STATA files. 3. Reading dates and datetimes sas7bdat and pandas.read_sas convert both date and datetime va...
input relation $ first_name $ birthdate : mmddyy8.; Correct answer: d An informat is used to translate the calendar date to a SAS date value. The date values are in the form of two-digit values for month-day-year, so the MMDDYY8. informat must be used. When using an informat with...