multiple-databases

mi file config.php is: $active_group = 'default'; $active_record = TRUE; db master is unique DB $db['master']['hostname'] = "localhost"; $db['master']['username'] = "root"; $db['master']['password'] = ""; $db['master']['database'] = "admin_nb"; $db['master']['dbdriver'] = "mysqli"; $db['master']['dbprefix'] = ''; $db['master']['pconnect'] = FALSE; $db['master']['db_debug'] = TRUE; $db['master']['cache_on'] = FALSE; $db['master']['cachedir'] = ""; $db['master']['char_set'] = "utf8"; $db['master']['dbcollat'] = "utf8_general_ci"; db app is DYNAMIC DB $db['app']['hostname'] = 'localhost'; $db[

I am looking to run a query over multiple databases. I've seen this function; sp_MsForEachDb Which is ok, but it runs through all the databases and I only want to use some of them. Is there a way to select which databases are run? Also within those databases, we have branches (so all the tables have a BranchID column). For example, Database 1 might have branches 4, 5 and 6 and we only want branch 5. Database 2 might also have branches 4, 5 and 6, but in this one we want branches 4 and 5. Is there a way to select which branch is run according to which database is being run? COuld this be done

I would like to fit a function using many data sets. For example, I reproduce an experience many times, each time I obtain a pair of data column (x,y). I put all these column in a file named 'data.txt' : first experience : x = column 1, y = column 2 second experience : x = column 3, y = column 4 third experience : x = column 5, y = column 6 ... Now I wish to fit a function y = f(x) for these data sets. I do not know if Gnuplot can do that ? If it is possible, could you please help me to correct the following command ? This one does not work. fit f(x) "data.txt" u 1:2:(0.25), "data.txt" u 3:4:

I'm building a REST API with Laravel (Lumen). The idea is that this API provides the back-end for multiple food-ordering websites. They share the same back-end logic (models, controllers etc.). This way each website only needs it's own front-end application, I'm planning to use Angular for this. Each website will have it's own data (products, pages etc.), which has to be stored in different databases. I've defined multiple connections within config/databases.php for testing purposes. Now I can dynamically set the connection before querying the corresponding database, like this: class

We have a primary database where all of our app resides. But there's a second database (updated from an external source), that I'd like to be able to connect to so I can pull data from it. I don't need to write anything...just read. It also only has one table that I'm pulling from. I really just need to do something like: OtherDatabase.articles.where(id > 1000) And that's it. So how can I do this in Rails (running 3.2.13)? For simple scenarios, Rails can support this without any extra gems; simply define the database in database.yml: other_db: adapter: mysql2 encoding: utf8 database: other_db

Brief introduction: I have this ASP.NET Webforms site with the particularity that it doesn't have only 1 database, it has many. Why? Because you can create new "instances" of the site on-the-fly. Every "instance" share the same codebase, but has its own database. These all databases have the same schema (structure) but of course different data. Don't ask 'why don't you put everything in one database and use InstanceId to know which is" because it's a business policy thing. The application knows which instance is being requested because of the url. There is one extra database to accomplish this