April 2013
Intermediate to advanced
864 pages
20h 28m
English
Content preview from Excel 2013 Formulas
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Chapter 20: Using Data Validation
In This Chapter
• An overview of Excel's data validation feature
• Practical examples of using data validation formulas
This chapter explores a very useful Excel feature: data validation. Data validation enables you to add rules for what's acceptable in specific cells and also allows you to add dynamic elements to your worksheet without using any macro programming.
About Data Validation
The Excel data validation feature allows you to set up rules that dictate what can be entered into a cell. For example, you may want to limit data entry in a particular cell to whole numbers between 1 and 12. If the user makes an invalid entry, you can display a custom message, such as the one shown in Figure 20-1.
Figure 20-1: Displaying a message when the user makes an invalid entry.
Excel makes it easy to specify the validation criteria, and you can also use a formula for more complex criteria.
The Excel data validation feature suffers from a potentially serious problem: If the user copies a cell that does not use data validation and pastes it to a cell that does use data validation, the data validation rules are deleted. In other words, the cell then accepts any type of data. This has always been a problem, but Microsoft still hasn't fixed it in Excel 2013. ...
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