ROWID

The ROWID returns the rowid (binary address) of a row in the database table. You can use the variables of the type UROWID to store rowids in a readable format. In the illustration below, you declare a variable named row_id for that reason:

DECLARE

row_id UROWID;

Whenever you select or fetch a rowid into a UROWID variable, you can use the function ROWIDTOCHAR that converts the binary value to an 18-byte character string. Then, you may compare the UROWID variable to the ROWID pseudocolumn in the WHERE clause of an UPDATE or DELETE statement to recognize the latest row fetched from a cursor. 

Posted Date: 10/4/2012 3:42:56 AM | Location : United States

Ask an Expert

Related Discussions:- Rowid - sql pseudocolumns, Assignment Help, Ask Question on Rowid - sql pseudocolumns, Get Answer, Expert's Help, Rowid - sql pseudocolumns Discussions

Write discussion on Rowid - sql pseudocolumns
Your posts are moderated

Write your message here..

Related Questions

Transaction control, Transaction Control The Oracle is transaction orie... Transaction Control The Oracle is transaction oriented; that is, Oracle uses the transactions to make sure the data integrity. The transaction is a sequence of SQL data manip

Benefit of the dynamic sql pl sql, Benefit of the dynamic SQL: This pa... Benefit of the dynamic SQL: This part shows you how to take full benefit of the dynamic SQL and how to keep away from some of the common pitfalls. Passing the Names of Sc

Structure of an object type in pl/sql, Structure of an Object Type: Si... Structure of an Object Type: Similar to package, an object type has 2 parts: the specification and the body. The specification is the interface to your applications; it declar

Scope rules - user-defined exceptions, Scope Rules You cannot declare ... Scope Rules You cannot declare an exception twice in the similar block. Though, you can, declare the similar exception in 2 different blocks. The Exceptions declared in a bloc

Grouping and ungrouping in sql, Grouping and Ungrouping in SQL Example... Grouping and Ungrouping in SQL Example specifying EXAM_MARK in place of COURSE in the main FROM clause. Example: Obtaining C_ER2 from EXAM_MARK SELECT CourseId, CAST

Projection in sql - correct version, Projection in SQL - correct version ... Projection in SQL - correct version Student StudentId is enrolled on some course. SELECT DISTINCT StudentId FROM IS_ENROLLED_ON In more complicated examples it is someti

Defining records, Defining and Declaring Records To create records, yo... Defining and Declaring Records To create records, you have to define a RECORD type, and then declare records of that type. You may also define RECORD types in the declarative

How pl/sql resolves the calls? , How Calls Are Resolved? The figure sho... How Calls Are Resolved? The figure shows that how the PL/SQL compiler resolves the subprogram calls. When the compiler encounters the procedure or function call, it tries to di

Primary key - sql, Primary Key - SQL A PRIMARY KEY specification carri... Primary Key - SQL A PRIMARY KEY specification carries an implicit NOT NULL constraint on each column of the specified key. When more than one key constraint is required, the k

Comparison operators- pl/sql, Comparison Operators The Comparison operat... Comparison Operators The Comparison operators can compare one expression to another. The outcome is always true, false, or null. Usually, you use a comparison operators in condi