1. Function Procedure - A procedure that returns a value explicitly. 2. Sub Procedure - A procedure that does not return any value explicitly. Here is simple example of defining a function procedure, invoking a procedure, and exchanging data with a procedure: ...
Technique #1: How to find duplicate values in SQL table Identifyingduplicate valuesin a database is essential for maintaining data integrity and accuracy. To find duplicate values in an SQL table, you can utilize the “GROUP BY” and “HAVING” clauses along with aggregate functions. ...
LOCAL - specifies that the cursor name is local to the Stored Procedure, trigger, or query that holds the cursor. Data Fetch Option in Cursors Microsoft SQL Server supports the following two fetch options for data: FORWARD_ONLY - Specifies that the cursor can only be scrolled from the first...
Inprogramming, a storedis a set of programming code (like PL/SQL) that executes a specific query or function. This stored procedure is used to execute one or more series of commands, search for, insert, update or delete data in a database. ...
Data Definition Language (DDL) statements are used to define the structure of the data in the database such as tables, procedures, functions, views, etc. The following table lists DDL statements: StatementDescription CREATE Create a new object(table, procedure, function, view etc.) in the data...
In SQL Server, the initial dialect for stored procedures (or stored procs) was Transact-SQL, aka T-SQL; in Oracle, it was PL-SQL. Both databases have added additional languages for stored procedures, such as C#, Java, and R. A simple T-SQL stored procedure might only be a parameterize...
If a SQL injection attack is successfully carried out, it could cause extensive damage by exposing sensitive data and damaging customer trust. That's why it is important to detect this type of attack in a timely manner. Web application firewalls (WAFs) are the most common tool used to filter...
After reading this article you will understand what a database cursor is, see an example, and understand when to use them in a stored procedure. All the examples for this lesson are based on Microsoft SQL Server Management Studio and the sample databases AdventureWorks and WideWorldImporters. ...
Below is an example trigger from the AdventureWorks2012 database. You’ll notice the syntax for a SQL trigger is very similar to that of a stored procedure. In fact, the trigger uses the same language to implement its logic as dostored procedures. In MS SQL, this isT-SQL; whereas in Or...
(I know it sounds a little obvious, but I want to make certain that everyone reading this starts from the same point of reference.) In fact, many RDBMS programs allow you to save a SELECT statement as a query, view, function, or stored procedure. Whenever someone says she is going to...