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JSON_ARRAYAGG in PostgreSQL - Examples & AI Generator
JSON_ARRAYAGG in PostgreSQL - Examples & AI Generator
Working with JSON_ARRAYAGG in PostgreSQL can be daunting—especially if you’re switching from other databases or just starting to use PostgreSQL’s JSON functions. Remembering syntax differences and building nested aggregations slows down workflows for data analysts and engineers alike. AI2sql streamlines this entire process: Describe your intent in plain English, and instantly generate production-ready JSON_ARRAYAGG queries—no coding required.
JSON_ARRAYAGG Syntax in PostgreSQL
PostgreSQL JSON_ARRAYAGG Function
The core purpose of JSON_ARRAYAGG
is to aggregate multiple row values into a single JSON array. This is invaluable when building structured API payloads or reporting formats. The basic syntax:
expression: The column or value you want to aggregate into a JSON array.
Unlike some databases, PostgreSQL’s JSON_ARRAYAGG
returns values as a JSON array—ideal for downstream applications and analytics.
JSON_ARRAYAGG Examples You Can Generate Instantly
1. Aggregate Product Names by Category
2. Combine Customer Emails for Each Sales Rep
3. Order Items as JSON Arrays per Order
Copy, paste, and modify these examples for your business scenario
AI2sql lets you skip manual edits by generating ready-to-run code from your prompt
Generate JSON_ARRAYAGG queries in 10 seconds with AI2sql
Why Use AI2sql Instead of Manual JSON_ARRAYAGG Coding
No coding required: Move from natural language to SQL instantly, even for multi-table aggregations
Consistent PostgreSQL syntax: Avoid errors caused by database-specific quirks
Fast iteration: Iterate on your queries in 10 seconds—ideal for prototypes, analytics, and production deployment
Trusted by the community: 50,000+ users across 80+ countries rely on AI2sql's instant generation
Prefer interactive SQL tools? Try AI2sql Generator. Want a deep dive? Learn JSON_ARRAYAGG.
FAQ: JSON_ARRAYAGG in PostgreSQL
What happens if my data includes NULLs?
By default, JSON_ARRAYAGG
includes null
elements in the resulting array. Use FILTER
to skip them if needed.
Is JSON_ARRAYAGG better than ARRAY_AGG for JSON APIs?
JSON_ARRAYAGG
returns a proper JSON array, which is directly serializable—preferred for API responses, unlike ARRAY_AGG
.
Can I nest JSON objects in the aggregation?
Yes—combine JSON_BUILD_OBJECT
with JSON_ARRAYAGG
for advanced structures:
Ready to skip hand-coding? Generate Your First Query Now.
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