Converting Character Timestamps to Valid Datetime Values in SAS скачать в хорошем качестве

Converting Character Timestamps to Valid Datetime Values in SAS

Learn how to effectively convert character timestamps in SAS into valid datetime values with detailed examples and solutions. Perfect for SAS users! --- This video is based on the question https://stackoverflow.com/q/77745477/ asked by the user 'John Doe' ( https://stackoverflow.com/u/439621/ ) and on the answer https://stackoverflow.com/a/77746095/ provided by the user 'PeterClemmensen' ( https://stackoverflow.com/u/4044936/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, comments, revision history etc. For example, the original title of the Question was: How to convert character timestamps in SAS to valid datetime values Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Converting Character Timestamps to Valid Datetime Values in SAS In the data analysis realm, particularly when using SAS, one common challenge that many users encounter is the conversion of character timestamps into valid datetime values. This process is not only essential for accurate data processing but also for ensuring that subsequent analyses can be performed without errors. In this guide, we will dive into how to approach this problem effectively, providing clear step-by-step solutions for converting character timestamps into their equivalent datetime values. The Problem You may find yourself dealing with character timestamps formatted in various ways. For instance, you might encounter the following scenarios: Sample 1 Character Timestamps: [[See Video to Reveal this Text or Code Snippet]] Desired Output: [[See Video to Reveal this Text or Code Snippet]] Sample 2 Character Timestamps: [[See Video to Reveal this Text or Code Snippet]] Desired Output: [[See Video to Reveal this Text or Code Snippet]] The challenge lies in converting these character-formatted timestamps into valid datetime values that SAS can recognize and manipulate. Step-by-Step Solutions Solution for Sample 1 To convert the first sample of timestamps, we will use a SAS data step, applying the input function combined with the format that correctly interprets the date and time structure: Data Input: First, you need to set up your initial character timestamps. Conversion: Use the input function alongside the anydtdtm. informat to transform the character representation into a SAS datetime value. Here’s how this can be implemented in SAS code: [[See Video to Reveal this Text or Code Snippet]] Explanation of the Code data have;: Creates a dataset to hold the character timestamps. c_ts = '...': Assigns your character timestamps for processing. n_ts = input(c_ts, anydtdtm.);: Converts the character timestamp into a SAS datetime value. format n_ts datetime20.;: Formats the output datetime value into a readable format. Solution for Sample 2 For the second sample where timestamps are represented in a different format, the approach requires using substr to dissect the timestamp string and convert it appropriately. Here’s the implementation: [[See Video to Reveal this Text or Code Snippet]] Explanation of the Code substr(c_ts, 1, 8): Extracts the date part (YYYYMMDD) from the character timestamp. input(..., yymmdd8.): Converts the extracted substring into a valid SAS date. format event_d ddmmyyd10.;: Formats the output date into the desired dd-mm-yyyy format. Conclusion Converting character timestamps to valid datetime values in SAS can seem daunting at first, but with the right approach and understanding of the required formats, it becomes a straightforward task. By following the provided examples, you should be able to handle various character timestamp formats effectively in your applications. Remember to adapt the code as needed for different timestamp structures you may encounter. Feel free to reach out if you have any questions or need further assistance in your SAS programming endeavors!