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InterviewSolution
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Explain the usage of trailing . |
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Answer» Occasionally, multiple observations need to be CREATED from a single RECORD of raw data. In ORDER to specify how SAS will READ such a record, you can use the double trailing at-sign ( or "double trailing @"). By using a double trailing , SAS is told to "hold the line more strongly". A double trailing sign () directs SAS not to advance to another input record, but to hold the CURRENT input record for the next input statement. It is important to note that the single trailing @ does not hold an input record for subsequent Iterations of the data step. A trailing "@" indicates that an input record will only be held for this iteration of the data step (until the processing returns or gets back to the top of the data step), or that it will be passed to the next INPUT statement without a single trailing "@". |
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