Question
SQL 1. Delete from the table Customers_Statistics all the customers that have not placed any orders 2. Modify the table and change the column definition
SQL
1. Delete from the table Customers_Statistics all the customers that have not placed any orders 2. Modify the table and change the column definition of Number_of_Items to a column that cannot be NULL
4.Modify the table and change the column definition of Number_of_Orders to a column that has a default value 0
3.Truncate table Customers_Statistics. Can you still see the table definition? What about the data?
4. Drop table Customers_Statistics. Can you still see the table definition?
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Machine Learning And Knowledge Discovery In Databases European Conference Ecml Pkdd 2010 Barcelona Spain September 2010 Proceedings Part 2 Lnai 6322
Authors: Jose L. Balcazar ,Francesco Bonchi ,Aristides Gionis ,Michele Sebag
2010th Edition
364215882X, 978-3642158827
