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英文字典中文字典相关资料:


  • Best Practices: Subset Without Getting Upset - SAS Support
    We can add a subsetting WHERE clause to our PROC FREQ call Now, we only get summary statistics for “Millenials”, “Generation X”, and “Baby Boomers” Instead, we would like to
  • how to get distinct observation from a dataset without SQL
    how to get a count of distinct values from a variable without using proc sql ? Which variable to be used to find the distinct observations - either ID or Name can be used in your example The simplest way is to use Proc sort with nodupkey For unique Name: For unique ID: There several ways to do with data step and hash
  • How to Subset Data in SAS (3 Examples) - Statology
    Here are the three most common ways to subset a dataset in SAS: Method 1: Choose Which Columns to Keep data new_data; set original_data; keep var1 var3; run; Method 2: Choose Which Columns to Drop data new_data; set original_data; drop var4; run; Method 3: Choose Which Rows to Keep Based on Condition
  • LibGuides: SAS Tutorials: Subsetting and Splitting Datasets
    This SAS software tutorial shows how to subset or split a dataset from within a data step
  • Update one dataset with another without using PROC SQL
    There are many ways to do this The easiest is to sort the two data sets and then use MERGE For example: proc sort data=A; by id; run; proc sort data=B; by id; run; data WANT; merge A(drop=age mark) B; by ID; run;
  • Splitting a data set into smaller data sets - SAS Users
    When you execute a DATA or PROC step without specifying an input data set, by default, SAS uses the _LAST_ data set For more information on this useful SAS coding technique see special data set names and examples and warning on using special data set names
  • How To Use WHERE Statement In SAS (Explained With Examples)
    You can use the WHERE command in SAS FSP software to subset data for editing and browsing The WHERE statement selects observations before they are brought into the program data vector The WHERE statement can produce a different data set from the sub-setting IF when a BY statement accompanies a SET, MERGE, or UPDATE statement





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