JSON Developer's Guide - Oracle

Oracle? Database

JSON Developer's Guide

20c

F14733-03 April 2020

Oracle Database JSON Developer's Guide, 20c

F14733-03

Copyright ? 2015, 2020, Oracle and/or its affiliates.

Primary Author: Drew Adams

Contributors: Oracle JSON development, product management, and quality assurance teams.

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Contents

Preface

Audience

xv

Documentation Accessibility

xv

Related Documents

xv

Conventions

xvi

Code Examples

xvii

Part I JSON Data and Oracle Database

1 JSON Data (Standard)

1.1 Overview of JSON

1-1

1.2 JSON Syntax and the Data It Represents

1-2

1.3 JSON Compared with XML

1-5

2 JSON in Oracle Database

2.1 Getting Started Using JSON with Oracle Database 2.2 Overview of JSON in Oracle Database

2.2.1 Data Types for JSON Data 2.2.2 JSON Columns in Database Tables 2.2.3 Use SQL With JSON Data 2.2.4 Use PL/SQL With JSON Data 2.3 JSON Data Type, To and From 2.3.1 JSON Data Type Constructor 2.3.2 Oracle SQL Function JSON_SCALAR 2.3.3 Oracle SQL Function JSON_SERIALIZE 2.3.4 JSON Constructor, JSON_SCALAR, and JSON_SERIALIZE: Summary 2.3.5 Migration of Textual JSON Data to JSON Type Data 2.4 Oracle Database Support for JSON 2.4.1 Support for RFC 8259: JSON Scalars

2-2 2-3 2-5 2-7 2-7 2-8 2-9 2-11 2-12 2-15 2-18 2-20 2-21 2-21

iii

Part II Store and Manage JSON Data 3 Overview of Storing and Managing JSON Data

4 Creating a Table With a JSON Column

4.1 Determining Whether a Column Must Contain Only JSON Data

4-4

5 SQL/JSON Conditions IS JSON and IS NOT JSON

5.1 Unique Versus Duplicate Fields in JSON Objects

5-3

5.2 About Strict and Lax JSON Syntax

5-3

5.3 Specifying Strict or Lax JSON Syntax

5-5

6 Character Sets and Character Encoding for JSON Data

7 Partitioning JSON Data

8 Replication of JSON Data

Part III Insert, Update, and Load JSON Data 9 Overview of Inserting, Updating, and Loading JSON Data

10 Oracle SQL Function JSON_TRANSFORM

11 Oracle SQL Function JSON_MERGEPATCH

12 Loading External JSON Data

iv

Part IV Query JSON Data 13 Simple Dot-Notation Access to JSON Data

14 SQL/JSON Path Expressions

14.1 Overview of SQL/JSON Path Expressions 14.2 SQL/JSON Path Expression Syntax

14.2.1 Basic SQL/JSON Path Expression Syntax 14.2.2 SQL/JSON Path Expression Syntax Relaxation 14.3 SQL/JSON Path Expression Item Methods 14.4 Types in Comparisons

15 Clauses Used in SQL Functions and Conditions for JSON

15.1 RETURNING Clause for SQL Query Functions 15.2 Wrapper Clause for SQL/JSON Query Functions JSON_QUERY and

JSON_TABLE 15.3 Error Clause for SQL Query Functions and Conditions 15.4 Empty-Field Clause for SQL/JSON Query Functions 15.5 ON MISMATCH Clause for JSON_VALUE

16 SQL/JSON Condition JSON_EXISTS

16.1 Using Filters with JSON_EXISTS 16.2 JSON_EXISTS as JSON_TABLE

17 SQL/JSON Function JSON_VALUE

17.1 Using SQL/JSON Function JSON_VALUE With a Boolean JSON Value 17.2 SQL/JSON Function JSON_VALUE Applied to a null JSON Value 17.3 Using JSON_VALUE To Instantiate a User-Defined Object Type Instance 17.4 JSON_VALUE as JSON_TABLE

18 SQL/JSON Function JSON_QUERY

18.1 JSON_QUERY as JSON_TABLE

14-1 14-2 14-2 14-11 14-12 14-20

15-1 15-4 15-7 15-9 15-10

16-2 16-4

17-3 17-4 17-4 17-8

18-3

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