Job-Ready SQL in an Afternoon - Altering Tables

The video tutorial explains how to use the SQL 'Alter Table' command to modify database tables. It covers adding, dropping, and modifying columns, including changing data types. The tutorial emphasizes the importance of understanding situational needs and encourages using online resources for specific queries.

What is the primary purpose of the Alter Table command?

• To create a new table

• To delete a table

• To modify the structure of an existing table

• To backup a table

When adding a new column to a table, what must you specify?

• The column's default value

• The table's primary key

• The table's foreign key

• The column's name and data type

Which command is used to remove a column from a table?

• Delete column

• Erase column

• Drop column

• Remove column

What is a reason to change the data type of a column?

• To accommodate larger values

• To improve query speed

• To reduce the table size

• To change the column name

What should you do if you need to perform a complex table alteration?

• Consult a database administrator

• Search online for syntax examples

• Recreate the table from scratch

• Use trial and error