How to modify a certain row in mysql

The syntax for modifying a row of data in MySQL is: UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition;. Among them, condition is used to uniquely identify the row to be modified, and value1, value2... are the new column values. Be careful to make sure that condition specifies a unique identifier, otherwise multiple rows may be accidentally updated. Verify changes using the SELECT statement.

How to modify a row in MySQL

The syntax for modifying a row of data in MySQL is as follows:

<code>UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition;</code>

Where:

• table_name is the name of the table to be updated.
• column1, column2, ... are the column names to be updated.
• value1, value2, ... are the new values.
• condition is the condition used to determine the row to be updated.

Usage Example

The following example updates the of the row with id being 5 in the users table name and email columns:

<code>UPDATE users SET name = 'John Doe', email = 'johndoe@example.com' WHERE id = 5;</code>

Notes

• Make surecondition specifies a unique identifier character to avoid accidentally updating multiple rows.
• If condition is not satisfied for any row, no data will be updated.
• If the specified value violates a constraint (for example, a primary key or a non-null column), an error is raised.
• After updating a row, you can use the SELECT statement to verify the changes.

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