SQL UPDATE Table: Replace Data Guide

In SQL, the UPDATE statement can be used to replace data in a table. Here is an example.

UPDATE 表名
SET 列名1 = 新值1, 列名2 = 新值2, ...

The table name is the name of the table where data will be replaced, column name 1, column name 2, etc. are the names of the columns where data will be replaced, and new value 1, new value 2, etc. are the new values to replace.

For example, if there is a table called students with columns id, name, and age, to replace the age of all students with 20 years old, you can use the following statement:

UPDATE students
SET age = 20

This will replace the age of all students in the students table with 20 years old.