- What are the types of triggers?
- Does stored procedure increase performance?
- Why we use stored procedure instead of function?
- When should I use stored procedures?
- Why do stored procedures and functions improve performance choose two?
- Should stored procedures be avoided?
- What are advantages and disadvantages of dynamic SQL statements?
- What is a procedure?
- Is a stored procedure faster than a query?
- Why stored procedure is better than query?
- Why do we need stored procedure?
- Can we call a stored procedure inside a function?
- What does a stored procedure look like?
- What are the disadvantages of stored procedures?
- How does stored procedure reduce network traffic?
- Which is faster function or stored procedure in SQL?
- Which is better inline query or stored procedure?
- How do I optimize a SQL stored procedure?
- Why do we need triggers?
- What is difference between stored procedure and function?
- What is the benefit of stored procedure in SQL?
What are the types of triggers?
In SQL Server we can create four types of triggers Data Definition Language (DDL) triggers, Data Manipulation Language (DML) triggers, CLR triggers, and Logon triggers..
Does stored procedure increase performance?
Stored procedures improve database performance as they allow cached query plans to be reused. … In the absence of parameterized query plans, SQL server automatically detects parameters and generates cached query plans resulting in improved performance.
Why we use stored procedure instead of function?
Procedure allows SELECT as well as DML(INSERT/UPDATE/DELETE) statement in it whereas Function allows only SELECT statement in it. … Stored Procedures cannot be used in the SQL statements anywhere in the WHERE/HAVING/SELECT section whereas Function can be. Functions that return tables can be treated as another rowset.
When should I use stored procedures?
When all the code is in a stored proc, it is far easier to refactor the database when needed. Changes to logic are far easier to push as well. It is also far far easier to performance tune and sooner or later performance tuning becomes necessary for most database applications.
Why do stored procedures and functions improve performance choose two?
They reduce the number of calls to the database and decrease network traffic by bundling commands. … They reduce the number of calls to the database and decrease network traffic by using the local PL/SQL engine. D. They allow the application to perform high-speed processing locally.
Should stored procedures be avoided?
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.
What are advantages and disadvantages of dynamic SQL statements?
Advantages and Disadvantages of Dynamic SQL Host programs that accept and process dynamically defined SQL statements are more versatile than plain embedded SQL programs. Dynamic SQL statements can be built interactively with input from users having little or no knowledge of SQL.
What is a procedure?
1a : a particular way of accomplishing something or of acting. b : a step in a procedure. 2a : a series of steps followed in a regular definite order legal procedure a surgical procedure. b : a set of instructions for a computer that has a name by which it can be called into action.
Is a stored procedure faster than a query?
“Stored procedures are precompiled and cached so the performance is much better.” Stored procedures are precompiled and optimised, which means that the query engine can execute them more rapidly. By contrast, queries in code must be parsed, compiled, and optimised at runtime. This all costs time.
Why stored procedure is better than query?
The primary advantage to parameterized queries and stored procedures is that they don’t have to go through the compile process over and over again. Stored procedures also offer some additional security aspects. Ad hoc queries are just query strings passed to the server directly. They are compiled and stored in memory.
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.
Can we call a stored procedure inside a function?
7 Answers. You cannot execute a stored procedure inside a function, because a function is not allowed to modify database state, and stored procedures are allowed to modify database state. … Therefore, it is not allowed to execute a stored procedure from within a function.
What does a stored procedure look like?
A stored procedure is typically treated like other database objects and controlled through server security mechanism. In a DBMS, a stored procedure is a set of SQL statements with an assigned name that’s stored in the database in compiled form so that it can be shared by a number of programs.
What are the disadvantages of stored procedures?
-Disadvantages of the Stored procedure.A large number of Logical operations increase CPU usage.Difficult to Debug.Not easy to Develop and Maintain.Not designed for developing Complex or Flexible business logic.
How does stored procedure reduce network traffic?
Use of stored procedures can reduce network traffic between clients and servers, because the commands are executed as a single batch of code. This means only the call to execute the procedure is sent over a network, instead of every single line of code being sent individually.
Which is faster function or stored procedure in SQL?
Stored Procedures can be fast, very fast, as they are pre-compiled. The optimiser does not have to work out the execution plan each time. A Stored Procedure will return results in a table form. Functions can be Scalar (returning a single result) or return Tabular data.
Which is better inline query or stored procedure?
“Stored procedures are precompiled and cached so the performance is much better.” The stored procedure is stored in a pre-compiled form. we can’t require write code again and again.
How do I optimize a SQL stored procedure?
SQL Server Stored Procedures Optimization TipsUse stored procedures instead of heavy-duty queries. … Include the SET NOCOUNT ON statement in your stored procedures to stop the message indicating the number of rows affected by a Transact-SQL statement. … Call stored procedures using their fully qualified name.More items…•
Why do we need triggers?
Triggers help the database designer ensure certain actions, such as maintaining an audit file, are completed regardless of which program or user makes changes to the data. … The programs are called triggers since an event, such as adding a record to a table, fires their execution.
What is difference between stored procedure and function?
A function has a return type and returns a value. A procedure does not have a return type. But it returns values using the OUT parameters.
What is the benefit of stored procedure in SQL?
By grouping SQL statements, a stored procedure allows them to be executed with a single call. This minimizes the use of slow networks, reduces network traffic, and improves round-trip response time. OLTP applications, in particular, benefit because result set processing eliminates network bottlenecks.