In this case, the pattern was that the numbers were getting incrementing by 1. Note that Fill Handle automatically identifies the pattern and fill the remaining cells with that pattern. Double-click on the fill handle square (while the cursor is in the plus icon form) and it will automatically fill all the cells until the end of the dataset.Hover the cursor over this square, and you will notice that the cursor changes to a plus icon.Note that there would be a small square at the bottom-right of the selection. Here are the steps to quickly number the rows using the fill handle: Suppose you have a dataset as shown below: 1] Using Fill Handleįill handle identifies a pattern from a few filled cells and can easily be used to quickly fill the entire column. You can choose any one of the methods that work based on your dataset. Or, you might have a dataset that has a few blank rows in it, and you only want to number the rows that are filled. The LET function allows the SEQUENCE function to appear and be configured just once in the formula.įor a more complex example of how the LET function can be used to eliminate redundancy in a formula, see this example.The best way to number the rows in Excel would depend on the kind of data set that you have.įor example, you may have a continuous data set that starts from row 1, or a dataset that start from a different row. Without the LET function, SEQUENCE would need to appear twice in the formula, both times with the same (redundant) configuration. The result from WEEKDAY is the logic used to filter the original dates. In the second instance, the dates from SEQUENCE are passed into the WEEKDAY function, which checks tests for weekdays (i.e. In the first instance, the raw dates from SEQUENCE are passed into the FILTER function as the array to filter. Notice dates is used twice in this snippet: once by FILTER, once by the WEEKDAY function. Notice the start and end dates come from cells C4 and C5, respectively. Once dates has been assigned a value, it can be used in the final calculation, which is based on the FILTER function: FILTER(dates,WEEKDAY(dates,2)<6)) // filter out weekends The first argument declares the variable dates and the second argument assigns the output from SEQUENCE to dates: =LET(dates,SEQUENCE(C5-C4+1,1,C4,1) For example, the screenshot above shows a formula that uses the SEQUENCE function to generate all dates between and May 15, 2020, which are then filtered by the FILTER function to include only weekdays. Example #2Ī chief benefit of the LET function is simplification by eliminating redundancy. With a second variable: =LET(x,10,y,5,x+y) // returns 15Īfter x and y have been declared and assigned values, the calculation provided in the 5th argument returns 15. Performance - elimination of redundant code means less calculation time overall since expensive calculations only need to occur once.īelow is the general form of the LET function with one variable: =LET(x,10,x+1) // returns 11.Simplification - naming and defining variables in just one place helps eliminate redundancy and the errors that arise from having the same code in more than one place.Clarity - naming variables used in a formula can make a complex formula much easier to read and understand.The LET function provides three key benefits: The LET function is often combined with the LAMBDA function as a way to make a complex formula easier to use. LAMBDA provides a way to name a formula and re-use it in a worksheet like a custom function. Space characters and punctuation symbols are not allowed in names, but the underscore character (_) can be used. You can use names that contain numbers like "count1", "count2", etc., but names like "ct1" and "ct2" will fail because Excel will interpret the names as a cell reference. The names used in LET must begin with a letter and are not case-sensitive. The result from LET always appears as the last argument to the function. The final result is a calculation or a variable previously calculated. LET can handle up to 126 name/value pairs, but only the first name/value pair is required. The scope of each variable is the current LET function, and nested functions below. Variables are named and assigned values in pairs, separated by commas (name1,value1, name2,value2, etc). The formula can then refer to a variable by name as many times as needed, while the value of the variable is defined in one place only.Įxample 1 | Example 2 | Example 3 | Example 4 | More examples There are two primary reasons you might want to do this: (1) to improve performance by eliminating redundant calculations and (2) to make more complex formulas easier to read and write. Once a variable is named, it can be assigned a static value or a value based on a calculation. The LET function lets you define named variables in a formula.
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