A cursor is a pointer that points to a result of a query. PL/SQL has two types of cursors: implicit cursors and explicit cursors. Implicit cursors # Whenever Oracle executes an SQL statement such as SELECT INTO, INSERT, UPDATE, and DELETE, it automatically creates an implicit cursor.

Dec 2, 2020 · A cursor is a pointer to a private SQL area that stores information about the processing of a SELECT or data manipulation language (DML) statement (INSERT, UPDATE, DELETE, or MERGE). Cursor management of DML statements is handled by Oracle Database, but PL/SQL offers several ways to define and manipulate cursors to execute SELECT statements.

Summary: in this tutorial, you will learn how to use the PL/SQL cursor with parameters to fetch data based on parameters. An explicit cursor may accept a list of parameters. Each time you open the cursor, you can pass different arguments to the cursor, which results in different result sets.

A cursor is a pointer to a private SQL area that stores information about processing a specific SELECT or DML statement.

May 17, 2024 · Key actions involved in working with cursors in PL/SQL are: Declare Cursor: A cursor is declared by defining the SQL statement that returns a result set. Open: A Cursor is opened and populated by executing the SQL statement defined by the cursor. Fetch: When the cursor is opened, rows can be fetched from the cursor one by one or in a block to ...

A cursor, either explicit or implicit, is used to handle the result set of a SELECT statement. As a programmer, you can declare an explicit cursor to manage queries that return multiple rows of data. PL/SQL declares and opens an implicit cursor for any SELECT statement that is not associated with an explicit cursor.

Before using an explicit cursor, you must declare and define it. You can either declare it first (with cursor_declaration) and then define it later in the same block, subprogram, or package (with cursor_definition) or declare and define it at the same time (with cursor_definition).

Jun 28, 2024 · This tutorial covers PL/SQL Cursor definition, Implicit cursor, Explicit cursor, cursor attributes, for loop cursor statements with examples, etc.

Description An exploration into the different ways you can define and use cursors (pointers to SQL result sets) in PL/SQL, including: implicit cursor, explicit cursor, cursor expressions, cursor variables, DBMS_SQL cursor handles.

The cursor FOR LOOP implicitly creates its loop index as a record variable with the row type in which the cursor returns and then opens the cursor. In each loop iteration, the cursor FOR LOOP statement fetches a row from the result set into its loop index.