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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.
A cursor contains information on a select statement and the rows of data accessed by it. A cursor is used to referred to a program to fetch and process the rows returned by the SQL statement, one at a time. There are two types of cursors: Implicit Cursors. Explicit Cursors. 1) PL/SQL Implicit Cursors.
In PL/SQL, you can refer to the most recent implicit cursor as the SQL cursor, which always has attributes such as %FOUND, %ISOPEN, %NOTFOUND, and %ROWCOUNT. The SQL cursor has additional attributes, %BULK_ROWCOUNT and %BULK_EXCEPTIONS, designed for use with the FORALL statement.
May 17, 2024 · A Cursor in PL/SQL is a pointer to a context area that stores the result set of a query. PL/SQL Cursors. The cursor is used to retrieve data one row at a time from the results set, unlike other SQL commands that operate on all rows at once. Cursors update table records in a singleton or row-by-row manner.
A PL/SQL cursor is a pointer that points to the result set of an SQL query against database tables. Working with PL/SQL Cursor. The following picture describes steps that you need to follow when you work with a PL/SQL cursor: PL/SQL Cursor. Let’s examine each step in greater detail. Declaring PL/SQL Cursor.
In Oracle, a cursor is a mechanism by which you can assign a name to a SELECT statement and manipulate the information within that SQL statement. The following is a list of topics that explain how to use Cursors in Oracle/PLSQL: Create Cursor. Declare a Cursor. OPEN Statement. FETCH Statement. CLOSE Statement.
Cursors. To execute a multi-row query, Oracle opens an unnamed work area that stores processing information. A cursor lets you name the work area, access the information, and process the rows individually. For more information, see "Querying Data with PL/SQL". Syntax. Description of the illustration cursor_declaration.gif.
