How to use a MySQL query to filter out specific content?

1 year ago
Jackson Davis
1 minute

To modify MySQL statements to filter for specific content, you can use the WHERE clause and the LIKE operator.

Here is an example of using MySQL update statement to filter for content containing specific criteria:

UPDATE 表名
SET 列名 = '新值'
WHERE 列名 LIKE '%特定内容%';

In the example above, the following content needs to be replaced with actual table names, column names, and specific content:

  1. Table name: The name of the table to be manipulated.
  2. Column name: Name of the column to be modified.
  3. New value: To change the rows in a column that contain specific content to a new value.
  4. Specific content: specific content to be screened.

Please note that the LIKE operator is used for fuzzy matching, where % represents zero or more characters. Therefore, ‘%specific content%’ means matching any position that contains the specific content.

For example, if there is a table named “users” with a column named “email,” and we want to change email addresses containing “example.com” to “newdomain.com,” we can use the following statement:

UPDATE users
SET email = 'newdomain.com'
WHERE email LIKE '%example.com%';

This will change all email addresses containing “example.com” to “newdomain.com”.

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