Why Cursor Variables Are Easier to Use than Cursors

Home > Oracle > PL/SQL

Q

Why Cursor Variables Are Easier to Use than Cursors? - Oracle DBA FAQ - Working with Cursors in PL/SQL

✍: FYIcenter.com

A

Cursor variables are easier to use than cursors because:

Cursor variables are easier to define. No need to give a specific query statement.
Cursor variables are easier to open. You can specify the query dynamically at the time of open.
Cursor variables can be passed into procedures or functions.

2007-04-28, 5144👍, 0💬

What Is a Cursor Variable
What Is a Cursor Variable? - Oracle DBA FAQ - Working with Cursors in PL/SQL A cursor variable is a variable of a specific REF CURSOR data type, which is a pointer to a data structure resource connects to query statement result, similar to the CURSOR data type.. The advantage of using cursor variabl... 2007-04-28, 5425👍, 0💬

What Happens If Variable Names Collide with Table/Column Names
What Happens If Variable Names Collide with Table/Column Names? - Oracle DBA FAQ - Working with Database Objects in PL/SQL When a variable name collides with a column name, PL/SQL will use it as the variable if it is used where variable is allowed; It will be used as the column, if it is used where ... 2007-04-28, 5246👍, 0💬

How To Loop through a Cursor Variable
How To Loop through a Cursor Variable? - Oracle DBA FAQ - Working with Cursors in PL/SQL Once a cursor variable is opened with a query statement, it will have the same attributes as a normal cursor and it can be used in the same way a normal cursor too. The following sample script shows you how to l... 2007-04-28, 5242👍, 0💬

Can DDL Statements Be Used in PL/SQL
Can DDL Statements Be Used in PL/SQL? - Oracle DBA FAQ - Working with Database Objects in PL/SQL No, you can not run any DDL statements is PL/SQL directly. If you try to use the DROP TABLE statement inside PL/SQL, you will get a compilation error as shown below: (Connect to XE with SQL*Plus) BEGIN D... 2007-04-28, 5176👍, 0💬

How To Open a Cursor Variable
How To Open a Cursor Variable? - Oracle DBA FAQ - Working with Cursors in PL/SQL A cursor variable must be opened with a specific query statement before you can fetch data fields from its data rows. To open a cursor variable, you can use the OPEN ... FOR statement as shown in the following tutorial ... 2007-04-28, 5165👍, 0💬

How To Pass a Cursor Variable to a Procedure
How To Pass a Cursor Variable to a Procedure? - Oracle DBA FAQ - Working with Cursors in PL/SQL A cursor variable can be passed into a procedure like a normal variable. The sample script below gives you a good example: CREATE OR REPLACE PROCEDURE FYI_CENTER AS sys_cur SYS_REFCURSOR; PROCEDURE emp_pr... 2007-04-28, 5152👍, 0💬

How To Define a Cursor Variable
How To Define a Cursor Variable? - Oracle DBA FAQ - Working with Cursors in PL/SQL To define cursor variable, you must decide which REF CURSOR data type to use. There are 3 ways to select a REF CURSOR data type: Define your own specific REF CURSOR types using the TYPE ... RETURN statement. Define yo... 2007-04-28, 5146👍, 0💬

Why Cursor Variables Are Easier to Use than Cursors
Why Cursor Variables Are Easier to Use than Cursors? - Oracle DBA FAQ - Working with Cursors in PL/SQL Cursor variables are easier to use than cursors because: Cursor variables are easier to define. No need to give a specific query statement. Cursor variables are easier to open. You can specify the ... 2007-04-28, 5145👍, 0💬

Can Variables Be Used in SQL Statements
Can Variables Be Used in SQL Statements? - Oracle DBA FAQ - Working with Database Objects in PL/SQL Yes, you can use variables in SQL statements as part of any expressions. The tutorial script provides you some good examples: (Connect to XE with SQL*Plus) CREATE TABLE student (id NUMBER(5) PRIMARY K... 2007-04-28, 5007👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.