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https://github.com/pgadmin-org/pgadmin4.git
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b64896f558
Fixed some more issues:
1) pgAdmin allows only true or false values for autovacuum_enabled,
and there is no way to reset it individually without disabling a custom auto vacuum.
To fix this, the control is changed from the switch to three state buttons.
2) Setting any vacuum options to zero made the option disappear from the SQL.
3) Right-click on a table with vacuum options set and create a new table.
4) The parameters tab will have the options prefilled.
5) Changed the UI a bit to remove unnecessary space around. Added "Autovacuum" before enabled.
The SQL generated was appending a ".0" to decimal vacuum options. Changed to remove the leading ".0".
133 lines
5.5 KiB
ReStructuredText
133 lines
5.5 KiB
ReStructuredText
.. _materialized_view_dialog:
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*********************************
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`Materialized View Dialog`:index:
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*********************************
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Use the *Materialized View* dialog to define a materialized view. A materialized
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view is a stored or cached view that contains the result set of a query. Use
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the REFRESH MATERIALIZED VIEW command to update the content of a materialized
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view.
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The *Materialized View* dialog organizes the development of a materialized_view
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through the following dialog tabs: *General*, *Definition*, *Storage*,
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*Parameter*, and *Security*. The *SQL* tab displays the SQL code generated by
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dialog selections.
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.. image:: images/materialized_view_general.png
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:alt: Materialized view dialog general tab
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:align: center
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Use the fields in the *General* tab to identify the materialized view:
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* Use the *Name* field to add a descriptive name for the materialized view. The
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name will be displayed in the *pgAdmin* tree control.
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* Use the drop-down listbox next to *Owner* to select the role that will own
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the materialized view.
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* Select the name of the schema in which the materialized view will reside from
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the drop-down listbox in the *Schema* field.
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* Store notes about the materialized view in the *Comment* field.
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Click the *Definition* tab to continue.
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.. image:: images/materialized_view_definition.png
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:alt: Materialized view dialog definition tab
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:align: center
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Use the text editor field in the *Definition* tab to provide the query that will
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populate the materialized view. Please note that updating the definition of existing
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materialized view would result in loss of Parameter(Table, Toast), Security(Privileges & Security labels),
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Indexes and other dependent objects.
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Click the *Storage* tab to continue.
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.. image:: images/materialized_view_storage.png
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:alt: Materialized view dialog storage tab
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:align: center
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Use the fields in the *Storage* tab to maintain the materialized view:
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* Move the *With Data* switch to the *Yes* position to specify the materialized
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view should be populated at creation time. If not, the materialized view
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cannot be queried until you invoke REFRESH MATERIALIZED VIEW.
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* Use the drop-down listbox next to *Tablespace* to select a location for the
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materialized view.
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* Use the *Fill Factor* field to specify a fill factor for the materialized
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view. The fill factor for a table is a percentage between 10 and 100. 100
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(complete packing) is the default.
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Click the *Parameter* tab to continue.
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.. image:: images/materialized_view_parameter.png
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:alt: Materialized view dialog parameter tab
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:align: center
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Use the tabs nested inside the *Parameter* tab to specify VACUUM and ANALYZE
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thresholds; use the *Table* tab and the *Toast Table* tab to customize values
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for the table and the associated toast table. To change the default values:
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* Move the *Custom auto-vacuum?* switch to the *Yes* position to perform custom
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maintenance on the materialized view and to select values in the
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*Vacuum table*. The *Vacuum Table* provides default values for maintenance
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operations.
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* Changing *Autovacuum enabled?* to *Not set* will reset autovacuum_enabled.
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Click the *Security* tab to continue.
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.. image:: images/materialized_view_security.png
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:alt: Materialized view dialog security tab
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:align: center
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Use the *Security* tab to assign privileges and define security labels.
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Use the *Privileges* panel to assign privileges to a role. Click the *Add* icon
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(+) to set privileges for the materialized view:
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* Select the name of the role from the drop-down listbox in the *Grantee* field.
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* Click inside the *Privileges* field. Check the boxes to the left of one or
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more privileges to grant the selected privilege to the specified user.
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* The current user, who is the default grantor for granting the privilege, is displayed in the *Grantor* field.
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Click the *Add* icon (+) to assign additional privileges; to discard a
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privilege, click the trash icon to the left of the row and confirm deletion in
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the *Delete Row* popup.
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Use the *Security Labels* panel to define security labels applied to the
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materialized view. Click the *Add* icon (+) to add each security label
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selection:
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* Specify a security label provider in the *Provider* field. The named provider
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must be loaded and must consent to the proposed labeling operation.
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* Specify a a security label in the *Security Label* field. The meaning of a
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given label is at the discretion of the label provider. PostgreSQL places no
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restrictions on whether or how a label provider must interpret security
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labels; it merely provides a mechanism for storing them.
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Click the *Add* icon (+) to assign additional security labels; to discard a
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security label, click the trash icon to the left of the row and confirm deletion
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in the *Delete Row* popup.
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Click the *SQL* tab to continue.
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Your entries in the *Materialized View* dialog generate a SQL command (see an
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example below). Use the *SQL* tab for review; revisit or switch tabs to make any
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changes to the SQL command.
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Example
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*******
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The following is an example of the sql command generated by user selections in
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the *Materialized View* dialog:
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.. image:: images/materialized_view_sql.png
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:alt: Materialized view dialog sql tab
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:align: center
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The example shown creates a query named *new_hires* that stores the result of
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the displayed query in the *pg_default* tablespace.
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* Click the *Info* button (i) to access online help.
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* Click the *Save* button to save work.
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* Click the *Cancel* button to exit without saving work.
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* Click the *Reset* button to restore configuration parameters.
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