Defining Your Own Datatypes : Subtype Custom Type « PL SQL Data Types « Oracle PL/SQL Tutorial

Oracle PL/SQL Tutorial

1.	Introduction
2.	Query Select
3.	Set
4.	Insert Update Delete
5.	Sequences
6.	Table
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10.	SQL Data Types
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15.	Conversion Functions
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17.	Miscellaneous Functions
18.	Regular Expressions Functions
19.	Statistical Functions
20.	Linear Regression Functions
21.	PL SQL Data Types
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29.	SQL PLUS Session Environment
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31.	System Packages
32.	Object Oriented
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36.	User Privilege

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Oracle PL/SQL Tutorial » PL SQL Data Types » Subtype Custom Type

21. 36. 1. Defining Your Own Datatypes

You can create PL/SQL datatypes in the declaration portions of procedures, functions, root anonymous blocks, package bodies, and package specs.

You create SQL types by using a DDL operation with the following syntax:


type newType is definitionOfTheType;

The basic syntax is shown here:


declare

   type newType is definitionOfTheType;

21. 36. Subtype Custom Type
	21. 36. 1.	Defining Your Own Datatypes
	21. 36. 2.	Keeping Code Consistent with User-Defined Subtypes

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