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PostgreSQL

PostgreSQL is a free and open-source database system that supports both relational and non-relational queries. It is reliable, user-friendly, and extensible, with many features such as user-defined types, table inheritance, nested transactions, and asynchronous replication. It supports various programming languages and platforms.

PostgreSQL: Using json_agg to aggregate data

Updated: Jan 06, 2024
Introduction JSON aggregation in PostgreSQL is a powerful tool to structure query results in JSON format directly, often useful for API responses. With json_agg, we can summarize data as a JSON array of records. Getting Started with......

PostgreSQL: JSON and JSONB data types

Updated: Jan 06, 2024
Understanding the functionality and utility of the JSON and JSONB data types in PostgreSQL can vastly expand the capabilities of your relational database to operate with semi-structured or unstructured data. Harness these data types to......

PostgreSQL: Generate JSON from a table

Updated: Jan 06, 2024
Introduction Generating JSON from database tables is a practical way to seamlessly integrate databases with modern applications. In this tutorial, we will explore how PostgreSQL, with its robust JSON support, can be utilized to convert......

PostgreSQL: Build a JSON array

Updated: Jan 06, 2024
Introduction PostgreSQL is a powerful, open-source object-relational database system that has strong support for handling JSON data types. This tutorial delves into the construction of JSON arrays within PostgreSQL, showcasing the......

PostgreSQL: Extracting data from JSON documents

Updated: Jan 06, 2024
Overview JSON handling in PostgreSQL is robust, allowing for efficient storage, querying, and retrieval of structured data. Delving into its JSON functions can significantly enhance your data operations. Introduction to JSON in......

Perform JSON search in PostgreSQL

Updated: Jan 06, 2024
Introduction Searching within JSON data types in PostgreSQL allows you to leverage the full capabilities of semi-structured data in a relational database environment. This tutorial will guide you in running queries against JSON......

PostgreSQL: Indexing on JSONB

Updated: Jan 06, 2024
Introduction JSONB indexing in PostgreSQL allows for efficient querying of data within JSONB columns, providing performance benefits for complex, schema-less data structures. Getting Started with JSONB PostgreSQL offers the JSONB......

PostgreSQL: Array comparison with IN, ALL, ANY, and SOME

Updated: Jan 06, 2024
Overview Mastering array comparisons in PostgreSQL can greatly enhance query capabilities. This tutorial covers the intricacies of using IN, ALL, ANY, and SOME with code examples to demonstrate practical applications. Introduction......

PostgreSQL: Using Arrays in Tables

Updated: Jan 06, 2024
Introduction Arrays in PostgreSQL provide a versatile way to store and query sets of values within a single column. By harnessing this feature, developers can effectively manage data that naturally fits into a multi-valued......

PostgreSQL: Insert/Query/Update/Delete array data

Updated: Jan 06, 2024
Overview This tutorial covers essential operations on array data types in PostgreSQL, including inserting, querying, updating, and deleting. Master database manipulations by dealing with arrays using a variety of code......

Using multi-dimensional arrays in PostgreSQL

Updated: Jan 06, 2024
Overview Master the utilization of multi-dimensional arrays in PostgreSQL to enhance your database capabilities, from basic array concepts to advanced usage patterns. Multi-dimensional Arrays in Postgres In PostgreSQL, arrays are......

PostgreSQL: Selecting the first row in each GROUP BY group

Updated: Jan 06, 2024
Introduction Efficient data analysis often requires aggregating records and selecting distinct entries in SQL. In PostgreSQL, accomplishing this can be achieved using various methods. This guide will explore how to select the first row......