The OR function returns true if any of the provided arguments are logically true, and false if all of the provided arguments are logically false. Returns Was this helpful? How can we improve it? Skip to main content This browser is no longer supported. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Blank, Coalesce, IsBlank, and IsEmpty functions in Power Apps
In this articleTests whether a value is blank or a table contains no records, and provides a way to create blank values. OverviewBlank is a placeholder for "no value" or "unknown value." For example, a Combo box control's Selected property is blank if the user hasn't made a selection. Many data sources can store and return NULL values, which are represented in Power Apps as blank. Any property or calculated value in Power Apps can be blank. For example, a Boolean value normally has one of two values: true or false. But in addition to these two, it can also be blank indicating that the state is not known. This is similar to Microsoft Excel, where a worksheet cell starts out as blank with no contents but can hold the values TRUE or FALSE (among others). At any time, the contents of the cell can again be cleared, returning it to a blank state. Empty string refers to a string that contains no characters. The Len function returns zero for such a string and it can be written in a formulas as two double quotes with nothing in between In the context of the IsEmpty function, empty is specific to tables that contain no records. The table structure may be intact, complete with column names, but no data is in the table. A table may start as empty, take on records and no longer be empty, and then have the records removed and again be empty. Note We are in a period of transition. Until now, blank has also been used to report errors, making it impossible to differentiate a valid "no value" from an error. For this reason, at this time, storing blank values is supported only for local collections. You can store blank values in other data sources if you turn on the Formula-level error management experimental feature under Settings > Upcoming features > Experimental. We are actively working to finish this feature and complete the proper separation of blank values from errors. BlankThe Blank function returns a blank value. Use this to store a NULL value in a data source that supports these values, effectively removing any value from the field. IsBlankThe IsBlank function tests for a blank value or an empty string. The test includes empty strings to ease app creation since some data sources and controls use an empty string when there is no value present. To test specifically for a blank value use When enabling error handling for existing apps, consider replacing IsBlank with IsBlankOrError to preserve existing app behavior. Prior to the addition of error handling, a blank value was used to represent both null values from databases and error values. Error handling separates these two interpretations of blank which could change the behavior of existing apps that continue to use IsBlank. The return value for IsBlank is a boolean true or false. CoalesceThe Coalesce function evaluates its arguments in order and returns the first value that isn't blank or an empty string. Use this function to replace a blank value or empty string with a different value but leave non-blank and non-empty string values unchanged. If all the arguments are blank or empty strings then the function returns blank, making Coalesce a good way to convert empty strings to blank values.
All arguments to Coalesce must be of the same type; for example, you can't mix numbers with text strings. The return value from Coalesce is of this common type. IsEmptyThe IsEmpty function tests whether a table contains any records. It's equivalent to using the CountRows function and checking for zero. You can check for data-source errors by combining IsEmpty with the Errors function. The return value for IsEmpty is a Boolean true or false. SyntaxBlank() Coalesce( Value1 [, Value2, ... ] )
IsBlank( Value )
IsEmpty( Table )
ExamplesBlankNote At this time, the following example only works for local collections. You can store blank values in other data sources if you turn on the Formula-level error management experimental feature under Settings > Upcoming features > Experimental. We are actively working to finish this feature and complete the separation of blank values from errors.
Coalesce
IsBlank
For information about how to perform validation by using other tools, see the Validate function and working with data sources. Other examples:
IsEmpty
You can also use IsEmpty to test whether a calculated table is empty, as these examples show:
FeedbackSubmit and view feedback for What types of questions do Boolean functions answer?Functions like <, > and = all consume two Numbers as their Domain, and produce a special value called a Boolean as their Range. Booleans are answers to a yes-or-no question, and Boolean functions are used to perform tests.
Is the logical value TRUE treated the same as the text string true in Excel?The logical value TRUE is treated the same as the text string "TRUE". In the order of operations for Excel (Order of Precedence), the relational operators (=, <>, <=, >=) are last.
What function should be used to count the number of items in a list that meet one and only one specific criterion?The COUNTIF function uses the following arguments: Range (required argument) – This defines one or several cells that we wish to count. The range of cells are those cells that will be tested against the given criteria and counted if the criteria are satisfied. Criteria – This is a condition defined by us.
Why is it important to use cell references in functions or formulas in Excel quizlet?Absolute cell references are important when referring to constant values in a spreadsheet. Using formulas in spreadsheets can allow you to quickly make calculations and get totals of multiple cells, rows, or columns in a spreadsheet.
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