How do I call a SQL Server function from C#?

We can execute a function in C# using a SqlCommand object and passing a SQL defined function in a SELECT SQL query.

1. SqlConnection conn=new SqlConnection(@”SQLCONNECTION STRING”);
2. SqlCommand cmd = new SqlCommand(“SELECT * FROM dbo.function_xyz(@username)”, conn);
3. // cmd.CommandType=CommandType.StoredProcedure;

How do you call a function in SQL Server query?

How To Call A Function In SQL Server Stored procedure

1. create function function_to_be_called(@username varchar(200))
2. returns varchar(100)
3. as.
4. begin.
5. declare @password varchar(200)
6. set @password=(select [password] from [User] where username =@username)
7. return @password.
8. end.

How do you call a table-valued function in C#?

To execute a table-valued function use SELECT as a text command: jspCmd = new SqlCommand(“SELECT * FROM ” + jspStmt + “()”, conn); jspCmd. CommandType = CommandType.

How do you call a user-defined function in SQL Server?

CREATE/ALTER/DROP User-Defined Function

1. CREATE FUNCTION [database_name.] function_name (parameters)
2. RETURNS data_type AS.
3. SQL statements.
4. RETURN value.
5. ALTER FUNCTION [database_name.] function_name (parameters)
6. RETURNS data_type AS.
7. SQL statements.
8. RETURN value.

How do you call a function in Ado net?

ASP.NET Page to call stored function It uses ADO.NET to call stored function – GetEmail. It creates a parameter whose parameter direction is set to ReturnValue. Add it as one of the parameters to the Parameters collection of SqlCommand object.

How do you call a scalar function in SQL query?

In this syntax:

1. First, specify the name of the function after the CREATE FUNCTION keywords.
2. Second, specify a list of parameters surrounded by parentheses after the function name.
3. Third, specify the data type of the return value in the RETURNS statement.

How do you call a table valued function in SQL?

SQL Server Table-valued Functions

1. CREATE FUNCTION udfProductInYear ( @model_year INT ) RETURNS TABLE AS RETURN SELECT product_name, model_year, list_price FROM production.products WHERE model_year = @model_year;
2. SELECT * FROM udfProductInYear(2017);
3. SELECT product_name, list_price FROM udfProductInYear(2018);

What is user defined function with example?

User-defined functions are functions that you use to organize your code in the body of a policy. Once you define a function, you can call it in the same way as the built-in action and parser functions.

Which is better stored procedure or function?

Stored procedures in SQL are easier to create and functions have a more rigid structure and support less clauses and functionality. By the other hand, you can easily use the function results in T-SQL. We show how to concatenate a function with a string. Manipulating results from a stored procedure is more complex.

How to call a function in SQL Server?

1: Create a SQL scalar-valued function that performs the query and returns a bit. This could then be called directly from within the .Net client application using a “TEXT” SqlCommand object, and it would return a bool from the “ExecuteScalar ()” method.

How to execute a SQL function in C #?

Here is an example of a function in our SQL Server database. Step 2. Execute function in your C# code. We can execute a function in C# using a SqlCommand object and passing a SQL defined function in a SELECT SQL query. In this simple tip, we learned how we can execute a SQL function from a C# application.

How is a function defined in SQL Server?

A SQL Server user-defined function is usually returning data, it can an empty result set, one line or multiple columns. For example, let’s call the function from this article on how to create a SQL Server function.

How to create a function in SQL Server?

A function is created using the Create function SQL command. The following query creates a new user-defined function. Create function Fun_EmployeeInformation () returns table. as. return(select * from Employee ) Now see a newly created function in the database.