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Table: Why has an empty table a row count 1?

Ima Pojo

Hi Folks,

I am a little bit confused and wanted to know if you have a solution for my little problem.

I have a simple table (header row, detail row, footer row) in my report. In the table footer I located a row counter for that I use the aggregation function "COUNT" on the table. If the table is filled, the row counter gets me the correct number of rows. But if the table is empty, I get row count "1". Here should be "0" rows.

The report is executed in Web Viewer & exported as PDF and under Menue Run --> View Report --> as PDF with the same result. The BIRT version is 4.3.0. I have attached an rptdesigns with a filled table and an rptdesign with an empty table.

Do you may have an idea?

Thank you!

Greetings

Ima Pojo

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Comments

Tubal

Your COUNT isn't aggregating on any fields. I selected 'Field 1' and it returned 0 rows.

Ima Pojo

Hi Tubal, thank you for your answer! That will help me! I tried further and found the method Total.runningCount(). For testing I put it as Dynamic Text in the table footer row. And suddenly the aggregation shows correctly "0". So I clicked on the aggregation --> Scripting tab --> choose onCreate() --> and inserted "Total.runningCount()". And then all is well. Why? :-/