Re: Re: Many columns (as FK) vs 3x more Columns (in the same table)

I'm a little confused here. You have a 15x3x3 set of data to display in a 3 column, 15 row datagrid? Are you displaying a single value in each cell of the datagrid, or all 3 values for the cell? How many variables are needed to uniquely select a piece of data from that 3-dimensional space? Can you provide a little more detail about the data? -Matt On 09/19/2012 11:44 AM, Bruno Sandivilli wrote:

Anyone? Please. 2012/9/18 Bruno Sandivilli <bruno.sandivilli@gmail.com>

Hi, i strugling to decide what is the best choice: I have a 15 row x 3 columns Flash DataGrid, it means, for each row i have 3 values. To represent this in my Database, I could:

    1. Create 2 Tables : A Values table - with 3 columns ; and a Bill
    table (with 15 foreign keys, each one pointing to one row in the Values
    table).
    2. Create one Table with 45 columns (15 fields * 3 values for each
    field).

I want to know, wich is the best choice? To manage my query, now i have a SELECT with a thousand of leftJoins. This is the best choice? How could I run a query wich will give all results linked, like: ( column_1_val_1, column_1_val_2, column_1_val_2, column_2_val_1, column_1_val_2, column_1_val_3, etc...) ? Thanks!