Learn now How to use Recursive Queries in SQL?

Recursive Queries in SQL refer to queries that repeatedly execute until they reach a certain condition. They are useful for hierarchical data, such as a company’s organizational structure or a family tree. Recursive queries use a WITH RECURSIVE clause in SQL. The basic syntax for recursive queries is as follows: Here, cte_name is the name […]

Learn Now about Window functions in SQL

Window functions are advanced SQL functions that allow us to perform complex calculations on a set of rows called a “window.” A window is a subset of rows from a larger result set, usually defined by some criteria such as an ORDER BY clause or a PARTITION BY clause. Window functions operate on this window, […]

CTEs :How to use Common Table Expressions in SQL?

Common Table Expressions (CTEs) are a powerful feature in SQL that allow you to define a temporary result set that can be used within a query. CTEs are similar to temporary tables, but they are not materialized in the database and are only available within the scope of the query in which they are defined. […]

Learn Now What are Temporary tables in SQL?

Temporary tables in SQL are used to store intermediate or temporary data within a session. These tables are created and used only for the duration of a transaction or session and are automatically deleted when the transaction is committed or the session is closed. They can be used to store and manipulate data as part […]

Cursor: Learn Now about cursor

In SQL, a cursor is a database object that allows you to traverse through the result set of a SELECT statement one row at a time. Cursors can be useful in situations where you need to perform operations on each row in a result set individually. In this way, cursors provide a way to implement […]

How to use the DROP TRIGGER statement in SQL?

In SQL, you can drop a trigger by using the DROP TRIGGER statement. The syntax for dropping a trigger is as follows: Here, trigger_name is the name of the trigger you want to drop. The optional IF EXISTS clause is used to avoid an error if the trigger doesn’t exist. Here’s an example of how […]

How to use the ALTER TRIGGER statement in SQL

To update a trigger in SQL, you can use the ALTER TRIGGER statement. This statement allows you to modify the trigger’s definition, including the trigger’s name, the triggering event, and the trigger’s action. The basic syntax for updating a trigger in SQL is as follows: To modify the trigger definition, you simply modify the code […]

How to create trigger by CREATE TRIGGER STATEMENT in SQL

In SQL, a trigger is a special type of stored procedure that is automatically executed in response to certain events or actions, such as inserting, updating, or deleting data from a table. Triggers can be used to enforce business rules, ensure data consistency, or audit changes to the database. To create a trigger in SQL, […]

What Are Trigger and how to take its advantage in SQL

In SQL, a trigger is a database object that is used to automatically execute a specified set of instructions in response to certain events or changes within a database. Triggers can be used to enforce business rules, maintain data integrity, and automate data-related processes. A trigger consists of a trigger event, a trigger condition, and […]

How to return results from a stored procedure in SQL?

Stored procedures are widely used in SQL for encapsulating complex database operations into a single unit that can be easily called from an application. Sometimes, stored procedures need to return results back to the calling application. In this case, the procedure can be defined to return a result set or a single value using a […]