SQL Sales people must be trained to make orders. For a sales person to receive credit for an order, the order_date must fall between a training start and end date for that sales person.   1. Write a query that finds all orders where the salesperson did not have an active training on the order date.   The following query seems to almost work, but pulls in order id 4 which is not desired. select * from orders t1 join training t2 on t1.salesperson_id = t2.salesperson_id where (order_date not between start_date and end_date or  order_date between start_date and end_date is null) group by id;

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SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.