Mysql update entire column

Sometimes, you may want to update just one row; However, you may forget the WHERE clause and accidentally update all rows of the table. See the following employees table from the sample database. In this example, we will update the email of Mary Patterson to the new email mary.

Second, update the email address of Mary to the new email mary. To update values in the multiple columns, you need to specify the assignments in the SET clause. For example, the following statement updates both last name and email columns of employee number The following example updates the domain parts of emails of all Sales Reps with office code 6 :.

Active Oldest Votes. Improve this answer. ChrisW ChrisW 4, 6 6 gold badges 50 50 silver badges 85 85 bronze badges. It's not needed.

Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.

The Overflow Blog. Podcast Making Agile work for data science. Stack Gives Back Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Visit chat. Related Hot Network Questions. Question feed.