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Default values
8. Using DEFAULT for the current date and time


Great! DEFAULT is often used for date and time columns, and a very common situation is to use the current date and time for the default value. In SQL, you use current_timestamp to get the current date and time.

The create_timestamp column of the author table has a default value of current_timestamp. The following statement inserts a row with the create_timestamp column with the current date and time (i.e., the date and time of when the record was inserted):

INSERT INTO author (id, last_name, photo, create_timestamp)
VALUES (7, 'Smith', 'imgs/Smith2.jpg', DEFAULT);

Here is the result:

id first_name last_name photo create_timestamp is_active
7 NULL Smith imgs/Smith2.jpg 2018-10-12 10:02:20.1237862 true

Notice that the first name is not given in this query. The value for first_name is NULL because there is no DEFAULT value for this column.


The author with id = 7 wrote his first short post:

Our company sold about 23 percent more magazines this year than it did 2 years ago.

The title is Increased magazine sales, and the post ID is 5. Insert this data into the post table using the default date, which is the current date and time.

Stuck? Here's a hint!

You need to put a DEFAULT in the last VALUES argument.
Remember to include the period at the end of the short post.