What set Nocount on is for?
When SET NOCOUNT is ON, the count is not returned. When SET NOCOUNT is OFF, the count is returned. The @@ROWCOUNT function is updated even when SET NOCOUNT is ON. SET NOCOUNT ON prevents the sending of DONE_IN_PROC messages to the client for each statement in a stored procedure.
What is the use of set Nocount ON OFF statement in SQL?
When SET NOCOUNT is ON, the count (indicating the number of rows affected by a Transact-SQL statement) is not returned. When SET NOCOUNT is OFF, the count is returned. It is used with any SELECT, INSERT, UPDATE, DELETE statement. The setting of SET NOCOUNT is set at execute or run time and not at parse time.
What does set Quoted_identifier on mean?
SET QUOTED_IDENTIFIER must be ON when reserved keywords are used for object names in the database. When SET QUOTED_IDENTIFIER is OFF, identifiers cannot be quoted and must follow all Transact-SQL rules for identifiers.
What is set Arithabort on?
SET ARITHABORT must be ON when you’re creating or changing indexes on computed columns or indexed views. If SET ARITHABORT is OFF, CREATE, UPDATE, INSERT, and DELETE statements on tables with indexes on computed columns or indexed views fail.
How do you set Nocount on at level of database?
no, there is no database wide setting for SET NOCOUNT . KM. You could use the NH IInterceptor interface’s OnPrepareStatement method to modify the NH-generated SQL statements to include a “set nocount off” statement at the top of every sql query issued by your application.
What is difference between stored procedure and function?
The function must return a value but in Stored Procedure it is optional. Even a procedure can return zero or n values. Functions can have only input parameters for it whereas Procedures can have input or output parameters. Functions can be called from Procedure whereas Procedures cannot be called from a Function.
How do you optimize a query?
It’s vital you optimize your queries for minimum impact on database performance.
- Define business requirements first.
- SELECT fields instead of using SELECT *
- Avoid SELECT DISTINCT.
- Create joins with INNER JOIN (not WHERE)
- Use WHERE instead of HAVING to define filters.
- Use wildcards at the end of a phrase only.
Why we use set Ansi_nulls on in stored procedure?
ANSI_NULLS should be set to ON for executing distributed queries. ANSI_NULLS must also be ON when you are creating or changing indexes on computed columns or indexed views. If SET ANSI_NULLS is OFF, any CREATE, UPDATE, INSERT, and DELETE statements on tables with indexes on computed columns or indexed views will fail.
Is too long maximum length is 128 SQL Server?
Solution: SQL Server allows only 128 characters for identifiers such as Stored Procedure name, Table Name, Column Name etc.. If we try to create an object with name of more than 128 characters, we get error.
What is Concat_null_yields_null?
When SET CONCAT_NULL_YIELDS_NULL is ON, concatenating a null value with a string yields a NULL result. For example, SELECT ‘abc’ + NULL yields NULL . When SET CONCAT_NULL_YIELDS_NULL is OFF, concatenating a null value with a string yields the string itself (the null value is treated as an empty string).
Does a stored procedure have to have input parameters?
Objects similar to stored procedures are stored functions. The main difference between these objects is that function has a return value, and procedure has not. A stored procedures and functions may have input, output, and input/output parameters.
What is faster stored procedure or function?
As you can see, the scalar functions are slower than stored procedures. In average, the execution time of the scalar function was 57 seconds and the stored procedure 36 seconds….3. Are the scalar functions evil?
| Stored procedure execution time (s) | Function execution time (s) |
|---|---|
| 35 | 58 |
| Average: 35.8 | Average: 57.4 |
How do I create a procedure in SQL?
To create an SQL stored procedure: Create a template from an existing template. In the Data Project Explorer view, expand the SPDevelopment project to find the Stored Procedures folder. Right-click the Stored Procedures folder, and then select . In the Name field, type SPEmployee. In the Language field, select SQL.
What is a stored Proc?
Stored procedure. A stored procedure (also termed proc, storp, sproc, StoPro, StoredProc, StoreProc, sp, or SP) is a subroutine available to applications that access a relational database management system (RDBMS). Such procedures are stored in the database data dictionary.
What is procedure in SQL?
SQL Procedure. Introduction. A procedure (often called a stored procedure) is a subroutine like a subprogram in a regular computing language, stored in database. There are many useful applications of SQL procedures within a database or database application architecture.