calculated-field

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how to populate mysql column value based on a formula?

I have created a mysql table with the following columns... item_price, discount, delivery_charge, grand_total[详细]

2023-03-09 23:24 分类：问答
Listbox.DisplayMember won't display value from calculated property

I\'m using SubSonic 2.2 for my DAL and extended one of my classes with a calculated property that returns a string containing another property with indenting based on the level of the outline at which[详细]

2023-02-27 09:46 分类：问答
Using a Calculated field in SQL Query

I have a sql query in which i 开发者_运维问答have a calculated field which calculates the Contribution Margin. I get it to display and the math works fine. The problem i\'m having is that i want to on[详细]

2023-02-19 07:05 分类：问答
How can I implement "writable calculated" fields in a TDataSet?

I am in the need to add additional fields to a TDataSet that don\'t exist in the underlying database but can be derived from existing fields. I can easily do this with caclulated fields and that works[详细]

2023-02-18 10:58 分类：问答
Ruby on Rails - before_save calculation on accepts_nested_attributes_for

I have an invoice model, that \"has many\" invoice items.I have a form that allows you to create/edit an invoice, and this form accepts nested attributes for the invoice items.[详细]

2023-02-13 15:56 分类：问答
Best design pattern for calculated values on a subclass?

Say I have two types: ClassA { int ValueA; int CalculatedA; } ClassB { int ValueA; int CalculatedA; int ValueB;[详细]

2023-02-09 16:02 分类：问答
SQL Function that uses a time-stamp to output how old a question is

I have a calculated field whose value I want to 开发者_StackOverflowmodify depending on how old the entry is. Is there way in MySQL to take a time stamp and use it to determine how old a query is.[详细]

2023-02-06 17:42 分类：问答
How to generate a Random number for a calculated field in SharePoint?

Is there a way to generate a rand开发者_JAVA技巧om number for a calculated field, in a SharePoint list ?I don\'t believe that there is a way to do this within the SharePoint UI.[详细]

2023-01-29 18:47 分类：问答
Adding a calculated field to a Query at run time

I\'m getting data using a query in Delphi, and would like to add a calculated field to the query before it runs.The calculated field is using values in code as well as the query so I can\'t just calcu[详细]

2022-12-24 14:27 分类：问答
Meta http-equiv, can I?

I have put this code in my index, to load a new page, and then later 2 secs later, move to my original screen.[详细]

2022-12-16 12:09 分类：问答