UPDATE Multiple Records. It is the WHERE clause that determines how many records will be updated. The following SQL statement will update the PostalCode to 00000 for all records where country is "Mexico":

Jun 11, 2024 · To update multiple columns in MySQL we can use the SET clause in the UPDATE statement. SET clause allows users to update values of multiple columns at a time. In this article, we will learn how to update multiple columns in MySQL using UPDATE and SET commands.

Try either multi-table update syntax. UPDATE config t1 JOIN config t2 ON t1.config_name = 'name1' AND t2.config_name = 'name2' SET t1.config_value = 'value', t2.config_value = 'value2'; Here is a SQLFiddle demo. or conditional update

Nov 12, 2018 · There are a couple of ways to do it. 1. You can either write multiple UPDATE queries like this and run them all at once: 2. Or you can UPDATE with JOIN statement: SELECT 1 as id, 5 as new_score1, 8 as new_score2. UNION ALL. SELECT 2, 10, 8. UNION ALL. SELECT 3, 8, 3. UNION ALL. SELECT 4, 10, 7. 3. Or you can use INSERT ...

Jan 26, 2024 · Basic Update Syntax. The basic syntax of the UPDATE statement in MySQL is as follows: UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition; Let’s start with the most straightforward case: updating a single row.

Apr 24, 2025 · Now, we understand the potential drawbacks of using multiple UPDATE statements in the scenario. Let’s improve on the SQL code from the previous section to update our user table in a single query. To do this, we can use a SQL CASE statement to allow us to provide multiple values for a range of conditions, all within a single query:

Dec 31, 2024 · To update multiple rows in MySQL, you can use the UPDATE statement along with the WHERE clause. Here is the syntax: UPDATE table_name SET column1 = value1, column2 = value2, ... WHERE condition; Explanation: …

Dec 17, 2024 · This is the most common approach to update multiple rows based on a specific condition. Syntax UPDATE table_name SET column1 = new_value1, column2 = new_value2, ...

Dec 17, 2019 · Learn how to update multiple records in a MySQL database using a single query with this comprehensive guide. Optimize your database management skills today!

To update multiple rows that meet a specific condition, such as updating the class for all students aged 20 to '10C', use this query: SET class = '10C' WHERE age = 20; This command updates the class to ’10C’ for all students whose age is 20. If you need to update all rows in a table, you can omit the WHERE clause.