Updating multiple columns sql server

Similarly, let’s say we want to update two fields, salary and bonus.If we want to update more than one column, whereas previously we specified the new value using a scalar, when there is more than one column to update, we use an Array Ref.

So whereas previously we specified the matching column using a scalar, when there is more than one column to match, we use an Array Ref.

So we could think in terms of creating a re-usable module which would implement that logic.

This is the intention of UPDATE staff SET salary = 1200 WHERE name = ' Bob'; UPDATE staff SET salary = 1200 WHERE name = ' Jane'; UPDATE staff SET salary = 1200 WHERE name = ' Frank'; UPDATE staff SET salary = 1200 WHERE name = ' Susan'; UPDATE staff SET salary = 1200 WHERE name = ' John'; “key_columns” specifies the columns which will be used to identify rows which need to be updated (using WHERE). The first element provides the value of the column (specified by “key_columns”) to identify the row to be updated.

So is structured so that approaches which are generic across different SQL databases are expressed in a base class, and approaches which only work for specific SQL databases are expressed in a subclass.

An object of the relevant class is instantiated when the call is made, and control then passed to the implementation relevant to the database in use.

Search for updating multiple columns sql server:

updating multiple columns sql server-49updating multiple columns sql server-42updating multiple columns sql server-18updating multiple columns sql server-26

Leave a Reply

Your email address will not be published. Required fields are marked *

One thought on “updating multiple columns sql server”

  1. By means of an objective, scientific process, the Parship Principle®, the service helps its members to find love. The compatibility-based online dating service is specifically for people who want to form a lasting, honest and sincere relationship.