Pb filter null

One of the common tasks of dealing with missing data is to filter out the part with missing values in a few ways. Let us consider a toy example to illustrate this. Let us first load the pandas library and create a pandas dataframe from multiple lists. Our toy dataframe contains three columns and three rows.

The column Age has one missing value as well. The final statement calls Filter to apply the filter:. The resulting filter expression is:. The following example sets the filter expression to null, which causes PowerBuilder to display the Specify Filter dialog box. Then it calls Filter, which applies the filter expression the user specified:. JavaScript is disabled on your browser. Please enable JavaScript to enjoy all the features of this site.

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ImageFormat Export. MasterPassword Export. PDFStandard Export. Restrictions Export. UserPassword Export. UsePrintSpec Export. Print Export. TemplateCount Export. Template[ ]. Connect and share knowledge within a single location that is structured and easy to search. I'm using PowerBuilder and have a problem with the if condition. I want to check if a variable is not null or it is not empty. It goes to the else part of the condition. Shouldn't the if part become true? Am I writing the if condition wrong?

Thinking of "null" as "unknown" has always gotten me by in understanding how expressions evaluated. That doesn't apply in this case. I also starting to use the goto statement that is handy when dealing with nested if statement. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 9 years, 10 months ago. Active 9 years, 10 months ago.

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