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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(); Hope that helps.
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":
18 lut 2018 · You can arrange the target values for B.col1 and B.col2 as well as the filtering values for B.col3 as a derived table and join it to B in the UPDATE clause, like this:
11 cze 2024 · Updating table rows using subqueries in MySQL enables precise modifications based on specific conditions or values from other tables. This technique leverages subqueries within the SET or WHERE clauses of the UPDATE statement, allowing dynamic and context-specific updates.
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.
12 cze 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.
18 sie 2020 · How can I update multiple values in MySQL? This didn't work: UPDATE test SET list=0, price= 0.00 cprice= 0.00 WHERE test.id =3232
