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With a cursor variable, you pass the reference to that cursor. To declare a cursor variable, you use the REF CURSOR is the data type. PL/SQL has two forms of REF CURSOR typeS: strong typed and weak typed REF CURSOR. The following shows an example of a strong REF CURSOR.
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17 paź 2024 · A cursor variable is a reference to a cursor, which can be opened, fetched, and closed dynamically at runtime. Here, we'll look into the usage of cursor variables with REF CURSOR in PL/SQL and showcase their versatility in managing dynamic queries and result sets.
17 kwi 2013 · To retrieve the cursor you should declare it as a REF CURSOR in Package spec. --Creating the REF CURSOR type. type g_cursor is ref cursor; In both, spec and body, you need declare an out REF CURSOR variable in procedure signature, how cited above. procedure PRO_RETURN_CARS( i_id in tbl_car.car_id%type, o_cursor in out g_cursor);
A REF CURSOR is a PL/SQL data type whose value is the memory address of a query work area on the database. In essence, a REF CURSOR is a pointer or a handle to a result set on the database. REF CURSOR s are represented through the OracleRefCursor ODP.NET class.
Summary: in this tutorial, you will learn about the PL/SQL cursor and its usage. 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. Whenever Oracle executes an SQL statement such as SELECT INTO, INSERT, UPDATE, and DELETE, it automatically creates an implicit cursor.
A REF CURSOR is a named cursor that can be opened and used within a PL/SQL block. It allows you to pass a cursor reference as an argument to a procedure or function, which can then open the cursor and retrieve the data stored in it.
To create cursor variables, you define a REF CURSOR type, and then declare cursor variables of that type. Syntax of the REF Cursor. Define a REF Cursor TYPE: TYPE ref_type_name IS REF CURSOR. [RETURN { cursor_name%ROWTYPE. |ref_cursor_name%ROWTYPE. |record_name%TYPE. |record_type_name. |db_table_name%ROWTYPE. ];
