Saturday, February 25, 2012

PL/SQL Records

What is a PL/SQL Record

A PL/SQL record is a composite data structure that is a group of related data stored in fields. Each field in the Pl/SQL record has its own name and data type.

The General Syntax to define a composite datatype is:

TYPE record_type_name IS RECORD
(first_col_name column_datatype,
second_col_name column_datatype, ...);

record_type_name – it is the name of the composite type you want to define.
first_col_name, second_col_name, etc.,- it is the names the fields/columns within the record.
column_datatype defines the scalar datatype of the fields.

Declaring Table-based Record

To declare a table-based record you use a table name with %ROWTYPE attribute. The fields of the PL/SQL record has the same name and data type corresponding to the column of the table. The following illustrates table-based record declaration:

table_based_record table_name%ROWTYPE;

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