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Can a sql update statement update more than one row?


Asked by Jaxton Newman on Dec 12, 2021 SQL



The UPDATE statement is capable of updating more than one row. This is controlled by the WHERE clause. All rows returned via the WHERE clause criteria are updated. Suppose every SalesPerson whose ID is less than 10031 worked in Saline. To update the rows to reflect this we could use this UPDATE statement:
Thereof,
An UPDATE query is used to change an existing row or rows in the database. UPDATE queries can change all tables’ rows, or we can limit the update statement affects for certain rows with the help of the WHERE clause.
In respect to this, You can also update more than one column at a time. To update both the City and rowguid we can run Which updates the table to the following: Changes Donald Sax’s name to Don Sax. Notice we used the primary key SalesPersonID to filter the row. This makes it really easy to ensure the SQL UPDATE applies to one row.
In addition,
As MySQL doesn’t have inherent support for updating more than one rows or records with a single update query as it does for insert query, in a situation which needs us to perform updating to tens of thousands or even millions of records, one update query for each row seems to be too much.
Also Know,
UPDATE Syntax. 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. If you omit the WHERE clause, all records in the table will be updated!