lionelbarrow

SQL Primer

While there are plenty of good tutorials for SQL on the Internet, I didn't find anything that set the up the historical context and "assumed understanding" of SQL very well, so I decided to write a short primer on the topic. Here's what we'll cover:

• What is SQL?
• The SQL programmng language
• Databases and SQL
• Schemas and queries

What is SQL?

lionelbarrow

The type="array" is necessary

<subscription>                                                         
  <payment-method-token>the_payment_method_token</payment-method-token>
  <plan-id>the_plan_id</plan-id>                                       
  <add-ons>                                                            
    <add type="array">                                                 
      <item>                                                           
        <inherited-from-id>add_on_id_1</inherited-from-id>             
        <amount>20.00</amount>