Fetching and updating cursors 0871 granny chat

13-Dec-2016 15:26

Insiders: Want to see new features as soon as possible?You can download the nightly Insiders build and try the latest updates as soon as they are available.2) Accessing the records in the cursor: Once the cursor is created in the declaration section we can access the cursor in the execution section of the PL/SQL program. If you want to fetch after the last row, the program will throw an error.When there is more than one row in a cursor we can use loops along with explicit cursor attributes to fetch all the records.

Programmers cannot control the implicit cursors and the information in it.

There are two types of cursors in PL/SQL: These are created by default when DML statements like, INSERT, UPDATE, and DELETE statements are executed.

They are also created when a SELECT statement that returns just one row is executed.

Oracle creates a memory area, known as the context area, for processing an SQL statement, which contains all the information needed for processing the statement; for example, the number of rows processed, etc. The set of rows the cursor holds is referred to as the active set.

You can name a cursor so that it could be referred to in a program to fetch and process the rows returned by the SQL statement, one at a time.

Programmers cannot control the implicit cursors and the information in it.

There are two types of cursors in PL/SQL: These are created by default when DML statements like, INSERT, UPDATE, and DELETE statements are executed.

They are also created when a SELECT statement that returns just one row is executed.

Oracle creates a memory area, known as the context area, for processing an SQL statement, which contains all the information needed for processing the statement; for example, the number of rows processed, etc. The set of rows the cursor holds is referred to as the active set.

You can name a cursor so that it could be referred to in a program to fetch and process the rows returned by the SQL statement, one at a time.

Here are the new default settings: There's also a new menu item Use Ctrl Click for Multi-Cursor in the Selection menu to quickly toggle this setting.