Always set the length explicitly when merging on a BY variable with mismatched lengths, or avoid the situation in the first place.Ĥ. Use the SQL procedure when you need a Cartesian product.ģ. Avoid performing a many-to-many merge (where multiple datasets have repeats of the same BY variable) unless you know exactly what you are doing. Don’t merge without a BY statement unless you know exactly what you are doing, and consider using the MERGENOBY=ERROR option to avoid doing so inadvertently.Ģ. To Err is Human to Debug, Divine, Roger Staum ġ. Return of the Codes: SAS’®, Windows’®, and Yours, Mark TabladilloĢ. Generally, if automatic SAS macro variables return a value other than 0, then there was an issue or error in the previous step.ġ. Three types of debugging issues to resolve: See also Data Validation, SAS Certification exam and System Options. Tools can be applied to scan SAS logs and send email alerts from batch jobs. PROC FREQ for character variables and PROC MEANS for numeric variables help to describe the scope of the data. Errors could be as simple as syntax error which are easy to fix or as difficult as logic error which can only be fixed by knowing your data, such as min, max, relationships, code/uncoded, etc. SAS Debugging involves first the identification of errors or issues and then methods to resolve the issue. Being a good SAS programmer requires being a good SAS debugger.
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