command is used to update existing rows in a table. The following SQL statement updates the first customer (CustomerID = 1) with a new contact person and a new city.ExampleGet your own SQL Server UPDATE Customers SET ContactName = 'Alfred Schmidt', City= 'Frankfurt' WHERE CustomerID = 1...
The following SQL statement updates the first customer (CustomerID = 1) with a new contact personanda new city. ExampleGet your own SQL Server UPDATECustomers SETContactName ='Alfred Schmidt', City='Frankfurt' WHERECustomerID =1; The selection from the "Customers" table will now look like th...
如果你英语好,这些网上的教程也不错: https://www.sqlteaching.com/ http://www.w3schools.com/sql/default.asp Q2:我想问一下,这么些数据库,有关系的,比如MySQL,也有非关系的Redis、MongoDB这些引擎的底层实现、应用 分享回复1 广信it学院吧 uynnhlm SQL基础增删查改(入门)语句 1.SELECT 语句 SELECT 列...
We may use the SQL UPDATE command to update a record in a table in a database. Update a Record in a TableWe want to update a record in the Customers table in the Northwind database. We first create a table that lists all records in the Customers table:...