sql - is it common practice to further manipulate query results in code -

-

I do not have much experience with programming or scripting database queries, and I think rely on manipulation of results Instead of writing a final query, spending time with a database, to achieve my ultimate purpose.

In some cases in fact I am completely changing the nature of the result by adding values ​​of columns and by removing the rows. Instead of writing more complex questions, it seems easy to manipulate the code.

Of course, for most of the time I can write a query and I'm getting back to the result with the server how I want it to be consumed but there are occasions where I run the results for further filtering Yes, because I do not know how to do this in SQL, but coding is quite straight forward.

Post-text "itemprop =" text ">

Depending on it, generally, you should give a database to the database that are good in the data database - to be included in filtering, sorting, and data For complex complicated post-Qualification changes of data (business logic) you are usually doing in your application code, and not in the query, especially by debugging these things, really are very awesome in SQL. If you are fully convinced that your datasets are always very small (we say ... fewer than few hundred records) and your hard work It is always always simple, then instead of your application code, SQL is probably going to break into your overall performance or maintenance.

On the other hand, if the dataset was likely to increase for a few days is ( Paco should definitely test it - to test this dummy data!) Then you run the risk of writing application code which is unbearably friction and possibly uses the monster amount of memory to do those things which That database would be better for you At this point you may need to see how to add more efficiently to the database than the data code, Nbv can appropriately divided. To do this, you will need to test and analyze on both your data and your share of connectors working with you.

The last answer? Depending on your needs, decide how to break the work properly, which can be done effectively by the database server (in SQL) and your application code can be efficiently cleared and cleaned.


Comments

Post a Comment

Popular posts from this blog

paypal - How to know the URL referrer in PHP? -

-
I'm new to integrating PayPal with sites, so easily from the service I can use Can the available method be? What am I trying to do, when the user clicks on "Return to my website", I want my return URL to know that the referrer is PayPal so I can send it automatically to the homepage . how to do this? I tried $ _ SERVER ['HTTP_REFERER'] but it does not seem like anything. During the IPN conversation I set the cookie and session (though I am not sure whether I am correcting it or doing this right), but on returning to my website, it does not seem to recognize any session . If I use it by using $ _ SERVER ['HTTP_REFERER'] , then I'm afraid it's a security risk, is not it? If so, is there any other way I remember? help please. Should you really know the referrer? Set the PayPal Return URL to a "secret" URL which is always redirected to the homepage. If someone reaches there and gets redirected without coming from PayPal, then ...
Read more

oauth - Facebook OAuth2 Logout does not remove fb_ cookie -

-
This is used to work so I'm not sure what's wrong the user just logs in to Facebook properly Is capable of Logging problem. I log out the user logout by redirecting them to the php script. $ facebook-> GetLogoutUrl (); When users click on that link, they are logged out from the Facebook page. However, when they return to my site, I find that the FB_ cookie is still there. PHP SDK still gives user FB session details. The strange thing is that www.facebook.com shows that I am already logged out of Facebook. What can be wrong here? Thanks, I've been stumped: (. OK, finally, what did I do? > GetLogoutUrl () with a next = address url on my logout script which will remove the Facebook cookie by setSession (null) .
Read more

wpf - Line breaks and indenting for the XAML of a saved FlowDocument? -

-
Is there a way to format XAM generated when a flow document is saved? Currently, all of this is run simultaneously in one line, and I want to break it into my elements, with line break and indenting it makes it a little easier to read. Here is the code I'm using to save a FlowDocument in a WPF RichTextBox as a XAML file: // entire document around TextRange textRange Create a TextRange side = new TextRange (myRichTextBox.Document.ContentStart, myRichTextBox.Document .contentEnd); // save the file using the file (file stream fs = file. Create (filename)) {textRange.Save (fs, DataFormats.Xaml); } Savings work fine, but as I mentioned, JPAM has been generated, all this goes together, no indentation or line breaks for its various elements Is: & lt; Section xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation" xml: space = "preserve" Tekstelinement = "left" Lainhait = "auto" Hashipineshn = enabled = "false...
Read more