Learn what is Cursor in SQL with the help of examples. SQL cursor is a database object that is used to manipulate and traverse the result set of a SELECT query.
Window Functions: This function retrieves a slice of results using absolute or relative positioning. The WINDOW function will make it easier to perform calculations such as adding a running total, moving average or similar calculations that rely on selecting a range of values. It also comes with ...
Applies to: SQL Server A distributed availability group (AG) is a special type of availability group that spans two separate availability groups. Distributed availability groups are available starting with SQL Server 2016. This article describes the distributed availabilit...
Applies to: SQL Server A distributed availability group (AG) is a special type of availability group that spans two separate availability groups. Distributed availability groups are available starting with SQL Server 2016. This article describes the distributed availability group feature. To c...
Time-based—attacker sends a SQL query to the database, which makes the database wait (for a period in seconds) before it can react. The attacker can see from the time the database takes to respond, whether a query is true or false. Based on the result, an HTTP response will be ge...
Union-basedattacks use prepared statements that exploit the SQL union function, which combines the results of multiple queries into one result. Inferential SQLi Also known asblind SQLi, inferential SQLi is when hackers send datapayloadsto a database server to observe its response and behavior withou...
How to identify a DDoS attack The most obvious symptom of a DDoS attack is a site or service suddenly becoming slow or unavailable. But since a number of causes — such a legitimate spike in traffic — can create similar performance issues, further investigation is usually required. Traffic an...
SQL is a query language that was designed to manage data stored in relational databases. You can use it to access, modify, and delete data. SQL queries are usually commands that request a specific set of results from the database using the SELECT statement, though other statements also exist...
(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...
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