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$con = new mysqli('localhost','user1','password','my_database'); $query = "Update MyTable SET col1='some value' WHERE id=1 LIMIT 1;"; $query .= "UPDATE MyTable SET col1='other value' WHERE id=2 LIMIT 1;"; //etc $con->multi_query($query); $con->close();
16 kwi 2016 · However, given how the conditions are re-used in your UPDATE statement, you could also take a different approach altogether: represent the affected IDs and the new values as a derived table and use an update with a join:
8 kwi 2024 · In this article, we will learn how to update multiple columns in MySQL using UPDATE and SET commands. We will cover the syntax and examples, providing explanations to help you understand how to update multiple columns in SQL with a single query.
The UPDATE statement is used to modify the existing records in a table. UPDATE Syntax. UPDATE table_name. SET column1 = value1, column2 = value2, ... WHERE condition; Note: Be careful when updating records in a table! Notice the . WHERE clause in the UPDATE statement. The WHERE clause specifies which record (s) that should be updated.
For the multiple-table syntax, UPDATE updates rows in each table named in table_references that satisfy the conditions. Each matching row is updated once, even if it matches the conditions multiple times.
Introduction to MySQL UPDATE statement. The UPDATE statement updates data in a table. It allows you to change the values in one or more columns of a single row or multiple rows. The following illustrates the basic syntax of the UPDATE statement: UPDATE [LOW_PRIORITY] [IGNORE] table_name . SET . column_name1 = expr1, column_name2 = expr2, ...
12 lis 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: UPDATE students SET score1 = 5, score2 = 8 WHERE id = 1; UPDATE students SET score1 = 10, score2 = 8 WHERE id = 2; UPDATE students SET score1 = 8, score2 = 3 WHERE id = 3;
