What is a function in SQL with example?

A function is a set of SQL statements that perform a specific task. Functions foster code reusability. If you have to repeatedly write large SQL scripts to perform the same task, you can create a function that performs that task. Next time instead of rewriting the SQL, you can simply call that function.

Which methods is used to open ADO recordset?

The default cursor for an ADO Recordset is a forward-only, read-only cursor located on the server. Using the Open method on a Recordset object opens a cursor that represents records from a base table, the results of a query, or a previously saved Recordset.

What is Adodb connection?

The ADO Connection Object is used to create an open connection to a data source. Through this connection, you can access and manipulate a database. If you want to access a database multiple times, you should establish a connection using the Connection object.

How do you create a function in SQL example?

Define the CREATE FUNCTION (scalar) statement:

Specify a name for the function.
Specify a name and data type for each input parameter.
Specify the RETURNS keyword and the data type of the scalar return value.
Specify the BEGIN keyword to introduce the function-body.
Specify the function body.
Specify the END keyword.

How many SQL functions are there?

There are two types of SQL functions, aggregate functions, and scalar(non-aggregate) functions.

When should you use the OleDbConnection object?

When to use OleDbConnection? When the connection is established between C# application and the specified data source, SQL commands will execute with the help of the Connection Object and retrieve or manipulate the data in the database.

What is the purpose of using Adodb?

ADOdb is a database abstraction library for PHP, originally based on the same concept as Microsoft’s ActiveX Data Objects. It allows developers to write applications in a consistent way regardless of the underlying database system storing the information.