In our experience, most SAS programmers use SAS names.American companies that have relied on SAS-based data analytics routines for decades but would like to separate themselves from the SAS Institute and its maintenece fees may be interested in another SAS runtime option that recently became available from Altair.įor decades, SAS Institute was the dominant provider of analytics software, based on the widespread use of the Statistical Analysis System (SAS) language that its co-founders, including SAS CEO Jim Goodnight, created in the late 1960s at North Carolina State University.
if you move your files, you need to change ALL the data set names, not just a libname statement.
SAS CODE CODE
file names are typically longer and clutter your code.The advantages of using operating system names are NOTE: The data set U:\class.sas7bdat has 19 observations and 5 variables. So the code that saves the data set, above, could have been written data "U:\class.sas7bdat" Īnd again we'll check the log. (The set statement tells SAS where to get data from, and the run statement tells SAS to execute the instructions accumulated so far.) Operating System NamesĪny place you can use a SAS name for a data set, you could instead use the operating system name. Library names may be up to eight characters, while data set names may be up to 32 characters. SAS names typically begin with a letter or underscore, and are composed of letters and numerals and underscores - special characters like blanks or parentheses are not (usually) allowed. The data set name and the library name are chosen by you, but there are certain restrictions (see SAS names). Obviously, the order in which these instructions are given to SAS is important!
The other key element, then, is the line that says libname U "U:\", a "libname statement", which tells SAS that the library U points to the place the operating system calls "U:\" (I like simple, easy to remember names). In this case, the file will be written wherever the library U points to, and will be named class.
One is the line that says data u.class, a "data statement", which instructs SAS where to write the file and what to name it. NOTE: DATA statement used (Total process time):įor now, for purposes of saving SAS data sets, there are two key elements to this code. NOTE: The data set U.CLASS has 19 observations and 5 variables. NOTE: There were 19 observations read from the data set SASHELP.CLASS. NOTE: Libref U was successfully assigned as follows: This produces a log which, in it's own way, says that the file was successfully saved. The basic code to save a SAS data set using the SAS name is libname U "U:\" In the SAS example above, u is a library name while class is the data file name. In SAS file names, the location is given by a prefix called a library name. In operating systems names, the file path (location) is included as part of the file name specification. Operating system file names are ALWAYS enclosed in quotes, while SAS file names are NEVER in quotes. On either operating system the SAS name for these data files might look like u.class
While a Linux data file name could look like "~/SAS64/class.sas7bdat"
SAS CODE WINDOWS
For example a Windows data file name might look like "U:\SAS64\class.sas7bdat" The operating system file name might include the location (the directory or folder) as well as the file name.
SAS CODE PORTABLE
SAS names a usually preferred, because they make your code more portable and easier to read, write, and maintain. In your SAS code, these data files can be addressed in either of two ways, either using an operating system name or using a SAS name. Ordinary SAS data sets are kept as files in your computer's file system, rather than being loaded in your computer's memory. These are usually saved by writing some SAS code, as opposed to clicking on a "Save" icon on the Toolbar or in the menus. In order to process any data, that data must be in the format of a SAS data set, a special SAS binary file which usually has the file extension ".sas7bdat".
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