twinnsa.blogg.se - Pgadmin 4 no schema has been selected

It's important to note that the output from the view is not a snapshot from the moment you created the view if the underlying source table were updated, perhaps to add Montpelier, those updates would automatically be reflected in the view. You could now use this view any time you want to work with state capitals. The Data Output pane will re-fill with the results of having ‘run’ the view.

Right-click on vw_capitals in the Browser pane, and select View/Edit Data > All Rows.

Assuming the original query and its output is still being displayed, click the X in the upper right of the page to close the query, then click Don't Save.

Select View > Refresh (or hit F5) if you don't see the new view listed.

Click Save to complete creation of the view.

Click on the Code tab, and paste the SQL statement held on the clipboard (Ctrl-V) into the text box.

Set the view's Name to vw_capitals and its Owner to postgres.

Right-click on the Views node and select Create > View.

Back in the main pgAdmin window, navigate to the usa schema.

After confirming that the query returns the correct rows, copy the SQL to your computer's clipboard (Ctrl-C).(Sorry Montpelier, I guess you were too small.) SELECT * FROM usa.cities WHERE capital = 1 ORDER BY stateabb In the pgAdmin Query dialog, execute the following query (which identifies the state capitals):.

Create a view based on attribute criteria In this section, we'll see how views can be created in Postgres. In Postgres and other sophisticated RDBMSs, stored SQL statements like these are called views. In Lesson 1, we saved a number of our MS-Access queries so that we could easily re-run them later and, in a couple of cases, to build a query upon another query rather than a table.