Implicit Cursors

Whenever a SQL statement is issued the Database server opens an area of memory in which the command is parsed and executed. This area is called a cursor. Microsoft tends to refer to cursors as datasets throughout much of their databse product documentation

When the executable part of a PL/SQL block issues a SQL command, PL/SQL creates an implicit cursor which has the identifier SQL. PL/SQL manages this cursor for you.PL/SQL provides some attributes which allow you to evaluate what happened when the implicit cursor was last used. You can use these attributes in PL/SQL statements like functions but you cannot use then within SQL statements

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