- Can we use trigger in stored procedure?
- What is difference between function and trigger?
- Why do we need stored procedure?
- What are the advantages to use stored procedures?
- What are after triggers?
- What are the different types of trigger?
- What is procedure function and trigger?
- How do you execute a trigger?
- Can a view call a stored procedure?
- Are views faster than queries?
- Which is faster stored procedure or view?
- What are the disadvantages of stored procedures?
- Which statement is used to remove a trigger?
- Can we call stored procedure inside trigger in Oracle?
- Is view faster than query mysql?
- What is the difference between stored procedure and view?
- What is the advantage of stored procedure over the database triggers?
- Why you should not use stored procedures?
Can we use trigger in stored procedure?
You cant call Trigger from Stored Procedure, as Trigger are created on table and get fired implicitly.
But you can call stored procedure to from trigger, but do remeber it should not be recursive..
What is difference between function and trigger?
Triggers and stored procedures are allowed to change data and commonly do change data, whereas a function is not allowed to change any data. The point of a function is always to return data. Sometimes it returns a single scalar value, sometimes it returns a table. Triggers never return data.
Why do we need stored procedure?
Stored procedures provide improved performance because fewer calls need to be sent to the database. For example, if a stored procedure has four SQL statements in the code, then there only needs to be a single call to the database instead of four calls for each individual SQL statement.
What are the advantages to use stored procedures?
Advantages of Stored ProceduresTo help you build powerful database applications, stored procedures provide several advantages including better performance, higher productivity, ease of use, and increased scalability. … Additionally, stored procedures enable you to take advantage of the computing resources of the server.More items…
What are after triggers?
Before triggers: used to update or validate record values before they’re saved to the database. After triggers: used to access field values that are set by the system (such as a record’s Id or LastModifiedDate field) and to effect changes in other records. The records that fire the after the trigger is read-only.
What are the different types of trigger?
Types of TriggersData Manipulation Language (DML) Triggers. DML triggers are executed when a DML operation like INSERT, UPDATE OR DELETE is fired on a Table or View. … Data Definition Language (DDL) Triggers. … LOGON Triggers. … CLR Triggers.
What is procedure function and trigger?
Procedures doesn’t return any values their just get parameters and do something with them, functions does the same by their also can return you a value based on their work. Triggers are kind of event handlers that react on any action you want and start procedure when this action happens.
How do you execute a trigger?
Select all the values from the table. Now we create two triggers for the insert event. Now create a another trigger. Now we insert data into the employee table….Triggers are used mainly in the following events:Insert Data into table.Delete data from table.Update table record.
Can a view call a stored procedure?
You can do the subqueries-to-temp table stuff in a stored procedure, but you can’t call a stored procedure from a view. …
Are views faster than queries?
Views make queries faster to write, but they don’t improve the underlying query performance. … In short, if an indexed view can satisfy a query, then under certain circumstances, this can drastically reduce the amount of work that SQL Server needs to do to return the required data, and so improve query performance.
Which is faster stored procedure or view?
A view is essentially a saved SQL statement. Therefore, I would say that in general, a stored procedure will be likely to be faster than a view IF the SQL statement for each is the same, and IF the SQL statement can benefit from optimizations. Otherwise, in general, they would be similar in performance.
What are the disadvantages of stored procedures?
The main disadvantages of stored procedures are given below:Testing – Testing of a logic which is encapsulated inside a stored procedure is very difficult. … Debugging – … Versioning – … Cost – … Portability –
Which statement is used to remove a trigger?
DROP TRIGGER statementUse the DROP TRIGGER statement to remove a database trigger from the database. The trigger must be in your own schema or you must have the DROP ANY TRIGGER system privilege.
Can we call stored procedure inside trigger in Oracle?
Yes you can fire a procedure from a Trigger. But, keep in mind that trigger & procedur e should not acess the same table. … Just keep in mind that a trigger can fire for every row affected with a DML trigger. So your stored procedure should be optimized or you could will run into performance issues.
Is view faster than query mysql?
A view is not compiled. Its a virtual table made up of other tables. When you create it, it doesn’t reside somewhere on your server. The underlying queries that make up the view are subject to the same performance gains or dings of the query optimizer.
What is the difference between stored procedure and view?
View is simple showcasing data stored in the database tables whereas a stored procedure is a group of statements that can be executed. A view is faster as it displays data from the tables referenced whereas a store procedure executes sql statements. A view is a simple way to save a complex SELECT in the database.
What is the advantage of stored procedure over the database triggers?
Advantage of a stored procedure over a database trigger. Stored procedures can accept parameters and can return values. Triggers can neither accept parameters nor return values. A Trigger is dependent on a table and the application has no control to not fire a trigger when not needed.
Why you should not use stored procedures?
Stored procedures are difficult to unit test. With an ORM, you can mock your database code so as to be able to test your business logic quickly. With stored procedures, you have to rebuild an entire test database from scratch. Stored procedures offer no performance advantage whatsoever.