To modify a view, you use the ALTER VIEW statement. The syntax of the ALTER VIEW statement is similar to the CREATE VIEW statement except that the CREATE keyword is replaced by the ALTER keyword. The following example changes the organization view by adding the email column.
How do I alter a view?
In Object Explorer, click the plus sign next to the database where your view is located and then click the plus sign next to the Views folder. Right-click on the view you wish to modify and select Design.
How do I edit a view in MySQL workbench?
To invoke the view editor, double-click a view object on the EER Diagram canvas or double-click a view in the Physical Schemas section on the MySQL Model page. This opens the view editor docked at the bottom of the application. Double-clicking the title bar undocks the editor.
How can I see all views in MySQL?
To get a list of MySQL views, we can use the SELECT command with LIKE operator. Let us see the syntax first. mysql> SELECT TABLE_SCHEMA, TABLE_NAME -> FROM information_schema.
How do I rename a view?
To rename a view In Object Explorer, expand the database that contains the view you wish to rename and then expand the View folder. Right-click the view you wish to rename and select Rename. Enter the view’s new name.
How do you change columns in view?
Hover and click the down arrow on any of the list headings, and then click Column settings>Show/hide columns. In the Edit view columns dialog, select or clear the columns you want to show or hide. Click Apply to save.
Can we add column to the existing view?
If you want to add a column into your view, you have to write the whole view body again and add the desired column into it. If your view is very complex, you may find it difficult to do this.
How do I view a MySQL database?
1. Open the Command Prompt and navigate to the bin folder of your MySQL Server installation directory. Then connect to the server using the mysql -u root -p command. Enter the password and execute the SHOW DATABASES; command we have discussed above.
How do I rename a view?
To rename a view In Object Explorer, expand the database that contains the view you wish to rename and then expand the View folder. Right-click the view you wish to rename and select Rename. Enter the view’s new name.
Which command is used to modify a view?
Use the ALTER VIEW statement to explicitly recompile a view that is invalid or to modify view constraints.
How do you convert an existing view Employee view into a secure view?
To create a secure view, specify the SECURE keyword in the CREATE VIEW or CREATE MATERIALIZED VIEW command. To convert an existing view to a secure view and back to a regular view, set/unset the SECURE keyword in the ALTER VIEW or ALTER MATERIALIZED VIEW command.
How do I delete a view in MySQL?
If you want to delete a SQL view, It is done by SQL DROP command you should use the following syntax: SQL DROP VIEW syntax: DROP VIEW view_name.
What is a view name?
A view is simply any SELECT query that has been given a name and saved in the database. For this reason, a view is sometimes called a named query or a stored query.
How do you switch to the view where you can modify the structure?
Switch to the view where you can modify the structure of the report without viewing any live data. In the Home Ribbon Tab in the Views Ribbon Group, you clicked the View button arrow. In the View menu, you clicked the Design View menu item.
How do you modify rows and columns?
To modify all rows or columns: Locate and click the Select All button just below the name box to select every cell in the worksheet. Position the mouse over a row line so the cursor becomes a double arrow. Click and drag the mouse to increase or decrease the row height, then release the mouse when you are satisfied.
Can we add and delete data from view?
INSERT, DELETE and UPDATE are directly possible on a simple view.
Can we edit view in SQL?
Modifying view If you remember the CREATE VIEW SQL syntax, a view can be modified by simply using the ALTER VIEW keyword instead, and then changing the structure of the SELECT statement.
Can we drop columns from a view?
A view is a stored SQL statement. So, to drop a column from a view is to modify the view text with one column less in the select clause. Be aware that you must recreate any instead of triggers on the view when doing so.
How can I see view in database?
In Object Explorer, select the plus sign next to the database that contains the view to which you want to view the properties, and then click the plus sign to expand the Views folder. Right-click the view of which you want to view the properties and select Properties.
What are the types of views in MySQL?
There are three types of System defined views, Information Schema, Catalog View, and Dynamic Management View.
How do I delete a view in MySQL?
Syntax. DROP VIEW view_name; Where, view_name is the name of the view to be deleted.
How do I change the datatype of a view?
Change data types in Datasheet view Select the field (the column) that you want to change. On the Fields tab, in the Properties group, click the arrow in the drop-down list next to Data Type, and then select a data type. Save your changes.
