Where do you declare a cursor in PL SQL language?

An explicit cursor should be defined in the declaration section of the PL/SQL Block. It is created on a SELECT Statement which returns more than one row.

How cursor is declared?

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 perform data manipulation.

What is cursor declaration syntax?

Syntax: DECLARE CURSOR IS ; BEGIN FOR I IN LOOP . . END LOOP; END; In the above syntax, the declaration part contains the declaration of the cursor. The cursor is created for the ‘SELECT’ statement that is given in the cursor declaration.

Can we declare cursor inside begin?

In general, yes you can, you just nest another execution block inside your current one…

Which keyword is used to declare cursor?

To create a cursor variable, either declare a variable of the predefined type SYS_REFCURSOR or define a REF CURSOR type and then declare a variable of that type. You cannot use a cursor variable in a cursor FOR LOOP statement.

How do you declare a cursor variable?

To create a cursor variable, either declare a variable of the predefined type SYS_REFCURSOR or define a REF CURSOR type and then declare a variable of that type. You cannot use a cursor variable in a cursor FOR LOOP statement. You cannot declare a cursor variable in a package specification.

Is cursor PL SQL variable?

Cursor variables are available to every PL/SQL client. For example, you can declare a cursor variable in a PL/SQL host environment such as an OCI or Pro*C program, then pass it as a bind variable to PL/SQL. Application development tools that have a PL/SQL engine can use cursor variables entirely on the client side.

How do you declare a variable in PL SQL?

PL/SQL variables must be declared in the declaration section or in a package as a global variable. When you declare a variable, PL/SQL allocates memory for the variable’s value and the storage location is identified by the variable name.

What is a PL SQL cursor?

PL/SQL – Cursors. A cursor is a pointer to this context area. PL/SQL controls the context area through a cursor. A cursor holds the rows (one or more) returned by a SQL statement. The set of rows the cursor holds is referred to as the active set.

How do you declare in SQL?

Variables in SQL procedures are defined by using the DECLARE statement. Values can be assigned to variables using the SET statement or the SELECT INTO statement or as a default value when the variable is declared. DECLARE is also used in SQL to declare a CURSOR against a DML statement.

What is open cursor in SQL?

– A Cursor is a database object that represents a result set and is used to manipulate data row by row. – When a cursor is opened, it is positioned on a row and that row is available for processing. – SQL Server supports three types of cursor namely Transact-SQL server cursor, API server cursor, and client cursor.