Start Updating multiple columns sql server

Updating multiple columns sql server

You will be given questions that you need to solve.

Multiple columns can also be tested for INSERT or UPDATE actions by using COLUMNS_UPDATED.

This returns a bit pattern that indicates which columns were inserted or updated.

If you omit the WHERE clause, all records in the table will be updated!

The WHERE clause specifies which record(s) that should be updated.

In this article I will show you the most common methods of using the UPDATE statement.

Below is the basic syntax for the UPDATE statement: This is not the complete syntax of the update statement.

Transact-SQL Syntax Conventions Is the name of the column to test for either an INSERT or UPDATE action.

Because the table name is specified in the ON clause of the trigger, do not include the table name before the column name.

UPDATE summary_data SET current_category = (SELECT category_id FROM products WHERE products.product_id = summary_data.product_id) WHERE EXISTS (SELECT category_id FROM products WHERE products.product_id = summary_data.product_id); If you want to test your skills using the SQL UPDATE statement, try some of our practice exercises.

These exercises allow you to try out your skills with the UPDATE statement.

This can also be used to change the column to NULL if the column has no default and is defined to allow null values.