Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind SQL ALTER TABLE Keyword?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Fill blank
Complete the missing token from the example code.
___ TABLE Customers3Order
Put the learning moves in the order that makes the concept easiest to apply.
The following SQL adds an "Email" column to the "Customers" table:
The ALTER TABLE command also adds and deletes various constraints in a table.
The ALTER TABLE command adds, deletes, or modifies columns in a table.
Alter Table
The ALTER TABLE command adds, deletes, or modifies columns in a table.
The ALTER TABLE command also adds and deletes various constraints in a table.
The following SQL adds an "Email" column to the "Customers" table:
Example
ALTER TABLE Customers
ADD Email varchar(255);The following SQL deletes the "Email" column from the "Customers" table:
Example
ALTER TABLE Customers
DROP COLUMN Email;