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HowTo::

How to Use a Derivation Formula to Calculate a Field Value


Parameters


Returns/Result


Examples


Reference

How to Use a Derivation Formula to Calculate a Field Value

1. Double-click on the Field object.

2. DataEase displays the “Field Definition” dialog.

3. Click on the “Derivation” radio button.

4. DataEase opens the “Derivation Formula” editor.

5. Enter the Derivation Formula manually, or click on a selection from the four list boxes and the numerical keypad to enter field names, relationships, functions, operators, and numbers in the formula box.

6. When you finish entering the formula, click OK.

7. DataEase checks the spelling and syntax. If DataEase finds an error, it positions the cursor at the start of the invalid word or expression. If the formula is valid, DataEase saves it as part of the field definition.

 

NOTE: Use the numeric keypad to enter numbers into a Derivation Formula. Constant values and the associated quotation marks must be entered into a formula manually. If a Field Name or a relationship name contains more than one word, it must be enclosed in quotation marks (e.g., count of “FAMILY MEMBERS” “LAST NAME”). Otherwise, you can omit the quotation marks (e.g., highest of MEMBERS ROOMS). Constant text values, like the state abbreviation “CT” must also be entered in quotation marks.

 

See Also


On the forum about How to Use a Derivation Formula to Calculate a Field Value

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Product: . Written by alembagheri tahmas 07/12/13 at 13:37:32

Hi there,I am trying to use an external MySQL DB in dataease. I have successfully create the ODBC link and added the DB to dataease. I can also access the DB from dataease. Now, just for testing purposes, I am trying to create a simple report b...

Product: DataEase for Windows 7.x. Written by George Washington 11/04/14 at 08:26:17

no se pude exportar ahora archivos a pdf, ni a excel o otros cosa mala. en verdad creo que hace faltaen las versiones anteriores me funcionaba mas o menos bien. le hace falta a los aplicativos que se desarrollan en Dataeasegr...

Product: DataEase 8 Reporter. Written by eduardo paez 02/05/14 at 14:40:11

Thanks. Anyway I'm trying to use this fuction but it seems to me that it doesn't work on 8.2. I tried also in a DQL.There's something wrong?<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAA9IAAAJ3CAYAAAB4NWk3AAAAAXNSR0IArs4...

Product: . Written by Marco Marchesi 15/02/16 at 14:50:46

[@EOF@]...

Product: Dataease [{8}]FIVE. Written by Chamil Rajindra 21/02/19 at 10:17:46

Thanks for the very good explanation!AS...

Product: . Written by afonso santos 28/10/19 at 00:50:14

I am pleased to see that the migration from Dos 4.53 is then sa 5.5 works. A really useful thing would be a compiler of SQL languages. Will you get there?Original Text:Mi compiaccio a vedere che la migrazione da Dos 4.53 รจ poi sa 5.5 funzio...

Product: . Written by Grossi Gioacchino 18/11/19 at 14:33:44

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