Author: Dev

In Oracle database, the ROW_NUMBER function is a powerful tool that allows you to generate a unique sequential number for each row in a query’s result set. This function is often used to rank the results of a query or to filter out specific rows from a large dataset. Syntax The syntax for the ROW_NUMBER…(Continue Reading)

The Oracle PL/SQL PERCENT_RANK function is part of Analytic functions, and is used to calculate the relative rank of a row within a result set. PERCENT_RANK function returns the rank of each row in a result set as a percentage of the total number of rows. The function takes two arguments: an expression and an…(Continue Reading)

In Oracle database, a trigger is a stored program that automatically executes in response to certain events, such as insertions, updates, and deletions, on a specified table or view. A system trigger is a special type of trigger that is created on the system level and executed whenever certain database-wide events occur, rather than on…(Continue Reading)

PL/SQL DML triggers in Oracle database are used to automatically execute a set of actions or procedures when a data manipulation language (DML) operation is performed on a table. These triggers are used to enforce business rules and data integrity constraints, audit changes to data, and perform custom actions when data is changed. DML triggers…(Continue Reading)

Dynamic SQL refers to the creation and execution of SQL statements at runtime. In Oracle PL/SQL, dynamic SQL can be achieved using the EXECUTE IMMEDIATE statement or the DBMS_SQL package. The EXECUTE IMMEDIATE statement allows the execution of SQL statements that are not known at compile time. The statement takes a string argument that contains…(Continue Reading)