EraQL

Complete reference documentation for Cotera's powerful query language.

Overview

EraQL (Era Query Language) is Cotera's specialized query language designed for modern data operations. This comprehensive reference covers everything from basic syntax to advanced query patterns.

Quick Reference

Core Concepts

• What is EraQL? - Introduction and overview
• Relational Algebra - Mathematical foundations

Query Building

• Expressions - Working with expressions and operators
• Functions - Built-in functions reference
• Subqueries - Complex nested queries

Data Operations

• Joins - Combining data from multiple sources
• Grouping - Aggregation and grouping operations
• Ordering - Sorting and result ordering
• Limit - Result set size control and pagination

Getting Started

If you're new to EraQL, start with What is EraQL? for an introduction to the language and its key features.

For hands-on tutorials, check our Guides section. To learn the fundamentals first, visit our Learn section.

Syntax Conventions

Throughout this reference:

• KEYWORDS are shown in uppercase
• expressions are shown in lowercase italics
• [optional] elements are shown in square brackets
• {required} elements are shown in curly braces