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Step 3: Proof of concept connecting to SQL using Ruby

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This example should be considered a proof of concept only. The sample code is simplified for clarity, and does not necessarily represent best practices recommended by Microsoft.

Step 1: Connect

The TinyTDS::Client function is used to connect to SQL Database.

    require 'tiny_tds'  
    client = TinyTds::Client.new username: 'yourusername@yourserver', password: 'yourpassword',  
    host: 'yourserver.database.windows.net', port: 1433,  
    database: 'AdventureWorks', azure:true

Step 2: Execute a query

Copy and paste the following code in an empty file. Call it test.rb. Then execute it by entering the following command from your command prompt:

    ruby test.rb

In the code sample, the TinyTds::Result function is used to retrieve a result set from a query against SQL Database. This function accepts a query and returns a result set. The results set is iterated over by using result.each do |row|.

    require 'tiny_tds'    
    print 'test'       
    client = TinyTds::Client.new username: 'yourusername@yourserver', password: 'yourpassword',  
    host: 'yourserver.database.windows.net', port: 1433,  
    database: 'AdventureWorks', azure:true  
    results = client.execute("SELECT c.CustomerID, c.CompanyName,COUNT(soh.SalesOrderID) AS OrderCount FROM SalesLT.Customer AS c LEFT OUTER JOIN SalesLT.SalesOrderHeader AS soh ON c.CustomerID = soh.CustomerID GROUP BY c.CustomerID, c.CompanyName ORDER BY OrderCount DESC")  
    results.each do |row|  
    puts row  
    end

Step 3: Insert a row

In this example you will see how to execute an INSERT statement safely, pass parameters which protect your application from SQL injection value.

To use TinyTDS with Azure, it is recommended that you execute several SET statements to change how the current session handles specific information. Recommended SET statements are provided in the code sample. For example, SET ANSI_NULL_DFLT_ON will allow new columns created to allow null values even if the nullability status of the column is not explicitly stated.

To align with the Microsoft SQL Server datetime format, use the strftime function to cast to the corresponding datetime format.

    require 'tiny_tds'  
    client = TinyTds::Client.new username: 'yourusername@yourserver', password: 'yourpassword',  
    host: 'yourserver.database.windows.net', port: 1433,  
    database: 'AdventureWorks', azure:true  
    results = client.execute("SET ANSI_NULLS ON")  
    results = client.execute("SET CURSOR_CLOSE_ON_COMMIT OFF")  
    results = client.execute("SET ANSI_NULL_DFLT_ON ON")  
    results = client.execute("SET IMPLICIT_TRANSACTIONS OFF")  
    results = client.execute("SET ANSI_PADDING ON")  
    results = client.execute("SET QUOTED_IDENTIFIER ON")  
    results = client.execute("SET ANSI_WARNINGS ON")  
    results = client.execute("SET CONCAT_NULL_YIELDS_NULL ON")  
    require 'date'  
    t = Time.now  
    curr_date = t.strftime("%Y-%m-%d %H:%M:%S.%L")  
    results = client.execute("INSERT SalesLT.Product (Name, ProductNumber, StandardCost, ListPrice, SellStartDate)  
    OUTPUT INSERTED.ProductID VALUES ('SQL Server Express New', 'SQLEXPRESS New', 0, 0, '#{curr_date}' )")  
    results.each do |row|  
    puts row  
    end