Updating multiple tables in sql server 2016
In a typical data warehousing application, quite often during the ETL cycle you need to perform INSERT, UPDATE and DELETE operations on a TARGET table by matching the records from the SOURCE table.For example, a products dimension table has information about the products; you need to sync-up this table with the latest information about the products from the source table..action_button.action_button:active.action_button:hover.action_button:focus.action_button:hover.action_button:focus .count.action_button:hover .count.action_button:focus .count:before.action_button:hover .count:before.submit_button.submit_button:active.submit_button:hover.submit_button:not(.fake_disabled):hover.submit_button:not(.fake_disabled):focus._type_serif_title_large.js-wf-loaded ._type_serif_title_large.amp-page [email protected] only screen and (min-device-width:320px) and (max-device-width:360px).u-margin-top--lg.u-margin-left--sm.u-flex.u-flex-auto.u-flex-none.bullet. Content Wrapper:after.hidden.normal.grid_page.grid_page:before,.grid_page:after.grid_page:after.grid_page h3.grid_page h3 a.grid_page h3 a:hover.grid_page h3 a.action_button.grid_page h3 a.action_button:active.grid_page h3 a.action_button:hover.grid_page h3 a.action_button:not(.fake_disabled):hover.grid_page h3 a.action_button:not(.fake_disabled):focus.grid_pagediv. At the same time, we will have a full control on the performed operation, which will be faster and easier to maintain.Sometimes, solutions are easier than thought, and I believe this is the case.This is the case of a simple task like updating two related tables with just one SQL query. The first contains user names, and the second email addresses related to the first table names.First table ("names") Well, there is an immediate advantage in performing just a single SQL query instead of two, and I believe it is quite clear: the server will have a lighter work load.
I will then use the MERGE SQL command to synchronize the target table with the source table.
You would need to write separate INSERT, UPDATE and DELETE statements to refresh the target table with an updated product list or do lookups.
Though it seems to be straight forward at first glance, but it becomes cumbersome when you have do it very often or on multiple tables, even the performance degrades significantly with this approach.
Addition of New Column’s in the Underlying Table will not automatically reflect in the existing views, Benefits of Views, Definition of Views, Difference Between Views and User Defined Functions, Sql, Sql Check View content, Sql Create View Syntax, Sql Delete View, Sql How to check View Definition, Sql Insert View, Sql Server, Sql Update View, Sql View with multiple table joins, Sql Views, Sql Views examples, Sql Views Syntax, Sql what is a View, Uses of Views, Views, Views in Sql Server, Views Vs User Defined functions Views are nothing but saved SQL statements, and are sometimes referred as Virtual Tables.
Keep in mind that Views cannot store data rather they only refer to data present in tables.