https://sqlserver2014tutorial.com/
In this SQL tutorial by Kash, we go over the SQL update statement using MS SQL 2012. This is used to modify data in a table. We first cover the syntax of the update query and then we go over some examples of update command including the following:
-Update single and multiple fields or columns in the CUSTOMERS table
-Modify multiple rows or records in the ORDERS table
Finally we change data in one table with information from another table. Specifically we are going to modify shipcountry column in ORDERS table with information from the CUSTOMERS table. For these exercises we will use Northwind sample database in SQL server 2012.
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SQL Tutorials by Kash - Using SQL Update statement in MS SQL 2012 | NatokHD