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  • Book Overview & Buying Learning Cypher
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Learning Cypher

Learning Cypher

By : Onofrio Panzarino
3.7 (12)
Buy this Book
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Learning Cypher

Learning Cypher

3.7 (12)
By: Onofrio Panzarino
Buy this Book

Overview of this book

Table of Contents (13 chapters)
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Learning Cypher
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Learning Cypher
Credits
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Credits
About the Author
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About the Author
About the Reviewers
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About the Reviewers
www.PacktPub.com
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www.PacktPub.com
Preface
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Preface
Lock Free Chapter
1
Querying Neo4j Effectively with Pattern Matching
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Querying Neo4j Effectively with Pattern Matching
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Setting up a new Neo4j database
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HR management tool – an example
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Summary
2
Filter, Aggregate, and Combine Results
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Filter, Aggregate, and Combine Results
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Filtering
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Sorting
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Aggregating results
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The UNION statement
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Summary
3
Manipulating the Database
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Manipulating the Database
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Using Neo4j Browser
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Creating nodes and relationships
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Modifying existing data
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Deleting data
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Loops
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Summary
4
Improving Performance
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Improving Performance
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Performance issues
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Best practices and recommendations
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Profiling queries
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Indexes and constraints
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Summary
5
Migrating from SQL
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Migrating from SQL
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Our example
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Migrating the schema
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Migrating the data
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Migrating queries
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Summary
1
Operators and Functions
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Operators and Functions
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Operators
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Functions
2
Index
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Index

Operators

The operators are grouped by category. Most of them return a null value if any operand has a null value. Anyway, there are some exceptions. So, for each operator, the behavior in case of a null value operand is specified.

Comparison operators

Comparison operators are binary operators that return a Boolean or a null value as results. They are mostly used in the WHERE clause (see Chapter 2, Filter, Aggregate, and Combine Results, for details) to filter data according to a condition, although they can be used in the RETURN clause as well.

In Cypher, comparison operators can be grouped in two classes: ordering operators and equality operators.

Ordering operators

Ordering operators are used to compare values (usually property values or literals). They are as follows:

Operator

Description

<

Less than

<=

Less than or equal to

>

Greater than

>=

Greater than or equal to

Let's see an example using one of these operators. This query looks for all books published in...

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Learning Cypher
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