Web Reference: The UPDATE statement is used to update or modify one or more records in a table. SET column1 = value1, column2 = value2, ... 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. Aug 6, 2025 · In SQL, modifying existing records and altering table structures are fundamental operations that allow us to update data and adjust the database schema. The UPDATE command is used to change the values of existing records in a table, enabling us to correct or update data as needed. Suppose the employee id 192 Sarah Bell changed her last name from Bell to Lopez and you need to update her record in the employeestable. To update Sarah’s last name from Bell to Lopez, you use the following UPDATEstatement: Try it The database system updated value in the last_name column and the row with employee_id 192. You can verify it by using ...
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