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This ends up saving quite a bit of execution time if you have large amounts of data to write to your file, or if you have quite a few files to write to. Conclusion. Throughout this article we showed how you can read and write JSON data from and to files, which is a very common and important task to know how to do as a web programmer.
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Important note! LEFT belongs to the category of Text functions, therefore the result of a Left formula is always a text string, even if the original value from which you extract characters is a number.If you are working with a numeric dataset and want the LEFT function to return a number, use it in conjunction with the VALUE function as demonstrated in this example.