which sql instruction will get rid of a view named patient report vw

How to find patients with nurse prepped appointments in SQL?

From the following table, write a SQL query to find those patients who had at least two appointments where the nurse who prepped the appointment was a registered nurse and the physician who has carried out primary care. Return Patient name as “Patient”, Physician name as “Primary Physician”, and Nurse Name as “Nurse”. Go to the editor 39.

How to find patients who have been prescribed medication in SQL?

From the following table, write a SQL query to find those patients who have been prescribed by some medication by his/her physician who has carried out primary care. Return Patient name as “Patient”, and Physician Name as “Physician”.

How can I get information about a view in SQL Server?

Thank you. Applies to: SQL Server (all supported versions) Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) You can gain information about a view's definition or properties in SQL Server by using SQL Server Management Studio or Transact-SQL.

How to get view information using the SP_helptextstored procedure?

To show the results as text, from the query editor, you press Ctrl-Tkeyboard shortcut or click the Results to Textbutton as shown in the following screenshot: Getting view information using the sp_helptextstored procedure The sp_helptextstored procedure returns the definition of a user-defined object such as a view.

Which command is used to remove SQL view?

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 the correct syntax to remove view from the database?

SQL allows us to delete an existing View. We can delete or drop a View using the DROP statement. Syntax: DROP VIEW view_name; view_name: Name of the View which we want to delete.

How do I drop a view in SQL table?

The syntax for the SQL DROP VIEW Statement is: DROP VIEW view_name; view_name. The name of the view that you wish to drop.

What is VW in SQL?

It's a View, if you have a read of that link, Microsoft do a good job of explaining what a view is and why someone might use one. "vw" is a common prefix for a View. If you expand the "Views" section in SSMS you should see the View call vwTournamentDetails .

How do you remove a view?

Right-click the view you want to delete and click Delete. In the Delete Object dialog box, click OK.

Can we delete a view in SQL?

View is like a virtual table which enable us to get information of multiple tables. yes we can insert,update and delete view in sql server.

Which of the following is used to remove a view from the database?

We can use a DROP statement to remove a view from the database.

What is view command in SQL?

In SQL, a view is a virtual table based on the result-set of an SQL statement. A view contains rows and columns, just like a real table. The fields in a view are fields from one or more real tables in the database.

What is the command to view tables in SQL?

Using the MySQL Command Line Client mysql> USE pizza_store; Now use the MySQL SHOW TABLES command to list the tables in the chosen database. mysql> SHOW TABLES; This command returns a list of all the tables in the chosen database.

How do I view a view in SQL?

Using SQL Server Management StudioIn 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.

How do I change the view in SQL?

To modify a viewIn 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.More items...•

What are the types of views in SQL?

There are three types of System defined views, Information Schema, Catalog View, and Dynamic Management View.

What is the purpose of the with check option clause in CREATE VIEW?

The WITH CHECK OPTION clause is used to prevent the insertion of rows in the view where the condition in the WHERE clause in CREATE VIEW statement is not satisfied.

What is a view in SQL?

Views in SQL are kind of virtual tables. A view also has rows and columns as they are in a real table in the database. We can create a view by selecting fields from one or more tables present in the database. A View can either have all the rows of a table or specific rows based on certain condition.

What is the with check option in SQL?

The WITH CHECK OPTION clause in SQL is a very useful clause for views. It is applicable to a updatable view. If the view is not updatable, then there is no meaning of including this clause in the CREATE VIEW statement.

Why does a view give an error when inserting a new row with null value in the name column?

In this View if we now try to insert a new row with null value in the NAME column then it will give an error because the view is created with the condition for NAME column as NOT NULL.

What statement should not include a group by clause?

The SELECT statement which is used to create the view should not include GROUP BY clause or ORDER BY clause. The SELECT statement should not have the DISTINCT keyword. The View should have all NOT NULL values. The view should not be created using nested queries or complex queries.

Why do we use views in SQL?

Views can be used to store complex queries. Views can also be used to rename the columns without affecting the base tables provided the number of columns in view must match the number of columns specified in select statement. Thus, renaming helps to to hide the names of the columns of the base tables.

Why should a database have views?

A good database should contain views due to the given reasons: Restricting data access –. Views provide an additional level of table security by restricting access to a predetermined set of rows and columns of a table. Hiding data complexity –. A view can hide the complexity that exists in a multiple table join.

How to get dependencies in Object Explorer?

To get dependencies on the view. In Object Explorer, expand the database that contains the view to which you want to view the properties, and then expand the Views folder. Right-click the view of which you want to view the properties and select View Dependencies.

How to get view properties in SQL?

In Object Explorer, click 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 happens when you change the name of an object referenced by a view?

If you change the name of an object referenced by a view, you must modify the view so that its text reflects the new name. Therefore, before renaming an object, display the dependencies of the object first to determine if any views are affected by the proposed change.

Is sp_helptext supported in Azure?

The system stored procedure sp_helptext is not supported in Azure Synapse Analytics. Instead, use the sys.sql_modules object catalog view.

What is the last two select statements in the script?

The last two select statements in the script confirm that the new FirstName and LastName values for the person with a BusinessEntityID value of 30001 are added to the results set for a select statement based on the dbo.persons table but are not added to the results set for the dbo.employee_persons view. There are still some unspecified values for the select statement in the defining code for the employee_persons view. These values need to be specified to generate a results set for a new employee from the view.

What is the preceding section in DBO?

The preceding section sets up a new department. This section will insert a new employee to the dbo.employees table using the employee_persons view. Notice that this is a different approach than the one used in the preceding section.

What is the function of dbo.departments table?

The dbo.departments table serves a lookup role for mapping departmentID numeric values from the d bo.employeedepthistory table to department names in the dbo.departments table. The dbo.departments table joins indirectly to the dbo.employees table through the dbo.employeedepthistory table.

What is the first attempt in DBo?

The first attempt tries an insert of values directly into the dbo.employee_persons view . The outcome from the script below confirms that this attempt fails.

What is the next statement in DBo?

The next statement is an insert into statement for dbo.employee_persons. The inserted column values (BusinessEntityID, OrganizationLevel, and JobTitle) are just for the dbo.employees base table, which is the primary base table of the dbo.employee_persons view.

How many inserts does it take to get to the employee_persons view?

It takes just three insert into statements for each fresh row of output from the employee_persons view.

What is the next block of code?

The next block of code creates a new view named dbo.v_persons. This view is based on the dbo.persons table. After the create view statement succeeds, a select statement displays a message confirming the creation of the new view.

What does object_id() do in SQL?

The OBJECT_ID()function returns an identification number of a schema-scoped database object.

What does sp_helptextstored do?

The sp_helptextstored procedure returns the definition of a user-defined object such as a view.

What is SQL Update View?

The SQL UPDATE VIEW command can be used to modify the data of a view.

Can a view be updated?

Here in the following topics, we are discussing, that a view can not be updated (using a UPDATE VIEW statement) if any of the fields of the view is created by using either an AGGREGATE FUNCTION or a GROUP BY clause.

Does a view have a DISTINCT clause?

4. The view must not have any DISTINCT clause in its definition.